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Learn about Sonoma County - its climate, potential air pollution concerns, and current air quality. You can also view upcoming Air District events in Sonoma County and read about local efforts to improve air quality.

Learn about Napa County - its climate, potential air pollution concerns, and current air quality. You can also view upcoming Air District events in Napa County and read about local efforts to improve air quality.

Learn about Solano County, its climate, air pollution potential, and local efforts to improve air quality.

Learn about Alameda County, its climate, air pollution potential, and local efforts to improve air quality.

Learn about Marin County, its climate, air pollution potential, and local efforts to improve air quality.

Learn about San Francisco County, its climate, air pollution potential, and local efforts to improve air quality.

Learn more about Santa Clara County, its climate, air pollution potential, and local efforts to improve air quality.

Learn more about Contra Costa County, its climate, air pollution potential, and local efforts to improve air quality.

Learn more about San Mateo County, its climate, air pollution potential, and local efforts to improve air quality.

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. 

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. 

The Air District is extending an air quality advisory for wildfire smoke in eastern Contra Costa County through Tuesday, July 19. Smoke from the Marsh Fire is expected to continue to impact the eastern Contra Costa cities of Pittsburg, Antioch, Oakley and Brentwood through Tuesday. 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.

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.

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.

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.

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. 

The Air District's Board of Directors approved allocating $4 million in Community Air Protection Incentives funding to support home and school air filtration programs in Bay Area communities at their June 4 meeting. As part of this initiative, the Air District Board authorized up to $1.3 million of upgrades in public schools in Richmond, North Richmond, San Pablo, and Tara Hills. An additional $1.7 million will be used to expand air filtration upgrades in schools in Bayview-Hunters Point in San Francisco, and $1 million will be allocated to the Air District’s Home Air Filtration program.

The Air District is issuing an air quality advisory due to smoke from the Crystal Fire in Napa County for today, Wednesday, June 5. Localized smoke impacts are possible near Angwin and may impact the Napa Valley from St. Helena to Calistoga. We will be closely monitoring air quality for smoke impacts from this incident.

The Air District and Alameda County District Attorney Ursula Jones Dickson filed a joint civil lawsuit against Radius Recycling, formerly Schnitzer Steel Industries, for air quality violations related to the fire at the company’s facility in West Oakland on August 9-10, 2023. In addition, previous enforcement actions by the Air District and the district attorney required Radius Recycling to install new equipment that has eliminated hundreds of tons of air pollution and reduced cancer risk by 84 percent since 2022; today the Air District finalized the operating permit for this important equipment. 

The Air District is advising Bay Area residents that smoke from the Loma Fire may be impacting Santa Clara County. Light winds blowing south-easterly have transported smoke from the fire into southern Santa Clara County, creating localized impacts.