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  • Air District issues air quality advisory for Friday
    Air District issues air quality advisory for Friday

    The Air District is issuing an air quality advisory for wildfire smoke for Friday, August 25. Smoke from the Smith River Complex and other fires in Northern California is expected to impact air quality throughout the Bay Area on Friday, causing air quality to reach low-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

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    The Air District is issuing an air quality advisory for wildfire smoke for Friday, August 25. Smoke from the Smith River Complex and other fires in Northern California is expected to impact air quality throughout the Bay Area on Friday, causing air quality to reach low-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

  • Air District extends air quality advisory through Sunday
    Air District extends air quality advisory through Sunday

    The Air District is extending an air quality advisory for wildfire smoke through tomorrow, Sunday, September 11. Smoke from wildfires in California, Oregon and Washington are expected to continue to impact the Bay Area tomorrow. Isolated pockets of elevated air pollution levels are possible; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present.

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    The Air District is extending an air quality advisory for wildfire smoke through tomorrow, Sunday, September 11. Smoke from wildfires in California, Oregon and Washington are expected to continue to impact the Bay Area tomorrow. Isolated pockets of elevated air pollution levels are possible; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present.

  • Air District extends air quality advisory through Sunday
    Air District extends air quality advisory through Sunday

    The Air District is extending an air quality advisory for wildfire smoke through Sunday, August 27. Smoke from numerous fires in Northern and Southern California and Oregon is expected to impact air quality throughout the Bay Area on Friday, Saturday and Sunday, causing air quality to reach low-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

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    The Air District is extending an air quality advisory for wildfire smoke through Sunday, August 27. Smoke from numerous fires in Northern and Southern California and Oregon is expected to impact air quality throughout the Bay Area on Friday, Saturday and Sunday, causing air quality to reach low-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

  • Air District issues air quality advisory for Tuesday and Wednesday
    Air District issues air quality advisory for Tuesday and Wednesday

    The Air District is issuing an air quality advisory for wildfire smoke for today, Tuesday, May 31, and tomorrow, Wednesday, June 1. Smoke from the Old Fire in Napa County is expected to impact the Napa Valley. Isolated pockets of elevated air pollution levels are possible near the fire; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present in the North Bay through Wednesday. 

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    The Air District is issuing an air quality advisory for wildfire smoke for today, Tuesday, May 31, and tomorrow, Wednesday, June 1. Smoke from the Old Fire in Napa County is expected to impact the Napa Valley. Isolated pockets of elevated air pollution levels are possible near the fire; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present in the North Bay through Wednesday. 

  • Air District extends air quality advisory for eastern Contra Costa County through Monday
    Air District extends air quality advisory for eastern Contra Costa County through Monday

    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Monday, July 18. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through the weekend and into Monday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Monday, July 18. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through the weekend and into Monday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District extends air quality advisory through Wednesday
    Air District extends air quality advisory through Wednesday

    The Air District is extending an air quality advisory for wildfire smoke through Wednesday, July 27. Winds are forecast to transport smoke from the Oak Fire in Mariposa County into the Bay Area through Wednesday; however, the smoke is expected to remain aloft. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations. Air quality is forecast to be in the good to moderate range on the air quality index and pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is extending an air quality advisory for wildfire smoke through Wednesday, July 27. Winds are forecast to transport smoke from the Oak Fire in Mariposa County into the Bay Area through Wednesday; however, the smoke is expected to remain aloft. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations. Air quality is forecast to be in the good to moderate range on the air quality index and pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District extends air quality advisory through Thursday
    Air District extends air quality advisory through Thursday

    The Air District is extending an air quality advisory for wildfire smoke through Thursday, July 28. Winds are continuing to transport smoke from the Oak Fire in Mariposa County into the Bay Area; however, smoke is expected to remain aloft. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations. Air quality is forecast to be in the good to moderate range on the air quality index and pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is extending an air quality advisory for wildfire smoke through Thursday, July 28. Winds are continuing to transport smoke from the Oak Fire in Mariposa County into the Bay Area; however, smoke is expected to remain aloft. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations. Air quality is forecast to be in the good to moderate range on the air quality index and pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District issues air quality advisory for Wednesday
    Air District issues air quality advisory for Wednesday

    The Air District is issuing an air quality advisory for wildfire smoke for tomorrow, Wednesday, August 17. Smoke from the Six Rivers Lightning Complex Fire in Humboldt and Trinity counties is expected to continue to impact the Bay Area tomorrow. Isolated pockets of elevated air pollution levels are possible; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect for Wednesday and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present tomorrow. 

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    The Air District is issuing an air quality advisory for wildfire smoke for tomorrow, Wednesday, August 17. Smoke from the Six Rivers Lightning Complex Fire in Humboldt and Trinity counties is expected to continue to impact the Bay Area tomorrow. Isolated pockets of elevated air pollution levels are possible; however, pollution levels are not expected to exceed the national 24-hour standard. A Spare the Air Alert is not in effect for Wednesday and air quality is not expected to be unhealthy. Smoky, hazy skies may be visible and the smell of smoke may be present tomorrow. 

  • Air District issues air quality advisory for Wednesday afternoon and evening
    Air District issues air quality advisory for Wednesday afternoon and evening

    The Air District is issuing an air quality advisory for wildfire smoke for this afternoon and early evening, Wednesday, July 19. Smoke from the Flat Fire in southwestern Oregon is forecast to be transported into the Bay Area this afternoon and early evening. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations, especially in the East Bay, North Bay and Santa Clara Valley regions. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is issuing an air quality advisory for wildfire smoke for this afternoon and early evening, Wednesday, July 19. Smoke from the Flat Fire in southwestern Oregon is forecast to be transported into the Bay Area this afternoon and early evening. Smoky, hazy skies may be visible across the Bay Area and the smell of smoke is possible at higher elevations, especially in the East Bay, North Bay and Santa Clara Valley regions. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District issues air quality advisory through Thursday
    Air District issues air quality advisory through Thursday

    The Air District is issuing an air quality advisory for wildfire smoke through Thursday, August 31. A Spare the Air Alert is also in effect for today, Wednesday, August 30. Smoke from numerous fires in Northern California and Oregon is expected to impact air quality throughout the Bay Area through tomorrow, causing air quality to reach high-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect for Thursday.

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    The Air District is issuing an air quality advisory for wildfire smoke through Thursday, August 31. A Spare the Air Alert is also in effect for today, Wednesday, August 30. Smoke from numerous fires in Northern California and Oregon is expected to impact air quality throughout the Bay Area through tomorrow, causing air quality to reach high-moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible and the smell of smoke is possible. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect for Thursday.

  • Air District extends air quality advisory through Friday
    Air District extends air quality advisory through Friday

    The Air District is extending an air quality advisory for wildfire smoke through Friday, August 20. Smoke from the Northern California wildfires is expected to continue to impact the Bay Area on Thursday and Friday. Light northerly winds will continue to transport smoke toward the Bay Area. Smoke impacts are forecast to be more widespread than last week. Air quality is expected to be in the mid to high-moderate range and not exceed the federal health standard, so no Spare the Air Alert is in effect. However, smoke may mix to the surface at times causing intermittent and isolated pockets of elevated pollution levels.

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    The Air District is extending an air quality advisory for wildfire smoke through Friday, August 20. Smoke from the Northern California wildfires is expected to continue to impact the Bay Area on Thursday and Friday. Light northerly winds will continue to transport smoke toward the Bay Area. Smoke impacts are forecast to be more widespread than last week. Air quality is expected to be in the mid to high-moderate range and not exceed the federal health standard, so no Spare the Air Alert is in effect. However, smoke may mix to the surface at times causing intermittent and isolated pockets of elevated pollution levels.

  • Air District issues air quality advisory for eastern Contra Costa County for Tuesday and Wednesday
    Air District issues air quality advisory for eastern Contra Costa County for Tuesday and Wednesday

    The Air District is issuing an air quality advisory for wildfire smoke in eastern Contra Costa County for today and tomorrow, Tuesday, July 12, and Wednesday, July 13. Smoke from the Marsh Fire is expected to impact the eastern Contra Costa cities of Pittsburgh, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise between 10 PM and 9 AM. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

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    The Air District is issuing an air quality advisory for wildfire smoke in eastern Contra Costa County for today and tomorrow, Tuesday, July 12, and Wednesday, July 13. Smoke from the Marsh Fire is expected to impact the eastern Contra Costa cities of Pittsburgh, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise between 10 PM and 9 AM. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

  • Air District extends air quality advisory for eastern Contra Costa County through Friday
    Air District extends air quality advisory for eastern Contra Costa County through Friday

    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Friday, July 15. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

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    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Friday, July 15. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

  • Air District extends air quality advisory for eastern Contra Costa County through Thursday
    Air District extends air quality advisory for eastern Contra Costa County through Thursday

    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Thursday, July 14. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise between 10 PM and 9 AM. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

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    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Thursday, July 14. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise between 10 PM and 9 AM. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect and air quality is expected to be in the moderate range overall. 

  • Air District extends air quality advisory for eastern Contra Costa County through Wednesday
    Air District extends air quality advisory for eastern Contra Costa County through Wednesday

    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Wednesday, July 20. Although efforts to flood the fire have begun to make progress, smoke from the Pittsburg Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through Wednesday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Wednesday, July 20. Although efforts to flood the fire have begun to make progress, smoke from the Pittsburg Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through Wednesday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District extends air quality advisory for eastern Contra Costa County through Thursday
    Air District extends air quality advisory for eastern Contra Costa County through Thursday

    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Thursday, July 21. Although efforts to flood the fire have begun to make progress, smoke from the Pittsburg Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through Thursday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight, localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

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    The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Thursday, July 21. Although efforts to flood the fire have begun to make progress, smoke from the Pittsburg Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through Thursday. Onshore winds during the daytime are expected to disperse smoke, but as winds die down overnight, localized pollution levels may rise during the overnight and early morning hours. Pollutant levels are not expected to exceed the national 24-hour health standard. A Spare the Air Alert is not in effect.

  • Air District issues air quality advisory for Sunday
    Air District issues air quality advisory for Sunday

    The Air District is issuing an air quality advisory for wildfire smoke for Sunday, August 20. Smoke from numerous fires in northern California is impacting air quality over far northwestern California. Wind patterns are helping to keep smoke away from the Bay Area today through most of the day on Sunday. However, some smoke is predicted to reach the North Bay by late Sunday afternoon, causing air quality to reach low-Moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible in the North Bay and the smell of smoke is possible at higher elevations. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

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    The Air District is issuing an air quality advisory for wildfire smoke for Sunday, August 20. Smoke from numerous fires in northern California is impacting air quality over far northwestern California. Wind patterns are helping to keep smoke away from the Bay Area today through most of the day on Sunday. However, some smoke is predicted to reach the North Bay by late Sunday afternoon, causing air quality to reach low-Moderate on the U.S. EPA’s Air Quality Index. Smoky, hazy skies may be visible in the North Bay and the smell of smoke is possible at higher elevations. Pollutant levels are NOT expected to exceed the national 24-hour health standard and there is no Spare the Air Alert in effect.

  • Emissions Standard Certification
    Emissions Standard Certification

    Jun 8, 2020 ... Attachment A Clean Air Act Emissions Statement Certification EPA Approval for the California State Implementation Plan (SIP) Revision Certifying that the Existing Emission Statement Program Meets ...

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    (108 Kb PDF, 3 pgs)

    Jun 8, 2020 ... Attachment A Clean Air Act Emissions Statement Certification EPA Approval for the California State Implementation Plan (SIP) Revision Certifying that the Existing Emission Statement Program Meets ...

  • Bay Area Meets Federal One-Hour Ozone Standard
    Bay Area Meets Federal One-Hour Ozone Standard

    Bay Area Meets Federal One-Hour Ozone Standard

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    (145 Kb PDF, 3 pgs)

    Bay Area Meets Federal One-Hour Ozone Standard

  • Spare the Air TONIGHT! Advisories Reflect New Particulate Standard
    Spare the Air TONIGHT! Advisories Reflect New Particulate Standard

    Spare the Air TONIGHT! Advisories Reflect New Particulate Standard

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    (24 Kb PDF, 1 pg)

    Spare the Air TONIGHT! Advisories Reflect New Particulate Standard

Spare the Air Status