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Learn how climate change is affecting our planet and what you can do to help reduce greenhouse gases.

Learn about particle pollution, its negative effects on human health and the environment, and what the Air District is doing to reduce levels in the Bay Area.

The Air District is extending the Spare the Air Alert for smog through Monday, September 5. Air quality is forecast to be unhealthy. Strong high pressure leading to a triple-digit heat wave, combined with light winds and vehicle exhaust, is expected to continue to cause unhealthy smog, or ozone, accumulation in the Bay Area. 

The Air District is issuing the fourth Spare the Air Alert of 2022 for smog for Saturday, September 3. Air quality is forecast to be unhealthy. A strong high-pressure system leading to triple-digit temperatures, combined with light winds and vehicle exhaust, is expected to cause unhealthy smog, or ozone, accumulation in the Bay Area. 

The Air District is extending the Spare the Air Alert for smog through Thursday, September 8. Air quality is forecast to be unhealthy. Continued high pressure over the region will result in clear skies, light winds, and hot temperatures across the Bay Area. These conditions, combined with motor vehicle exhaust, will produce unhealthy ozone levels.

The Air District is issuing the seventh Spare the Air Alert for smog (and the 11th overall this year) on Thursday, October 19. Air quality is forecast to be unhealthy tomorrow. High pressure over the region is expected to produce light offshore winds and hot temperatures across the Bay Area. These conditions, combined with motor vehicle exhaust, will produce unhealthy ozone levels.

The Air District is issuing a Spare the Air Alert for smog on Monday, September 30. Air quality is forecast to be unhealthy. High pressure over northern California is expected to produce offshore winds and hot inland temperatures in the upper-90s to low-100s. High inland temperatures, along with motor vehicle exhaust, will create elevated concentrations of ozone, or smog.

The Air District is extending the Spare the Air Alert for smog through Wednesday, September 7. Air quality is forecast to be unhealthy. High-pressure over the region will continue to produce clear skies, light winds and very hot temperatures across the Bay Area. These conditions, combined with motor vehicle exhaust, will produce unhealthy ozone levels.

The Air District is extending the Spare the Air Alert through Monday, December 26, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors. Cold overnight temperatures, stagnant air, patchy dense fog, and a high-pressure system over the region is allowing wood smoke pollution to continue to build up over the region. Concurrently, offshore winds transporting additional pollution from the Central Valley is continuing to cause unhealthy air quality in the Bay Area. 

The Air District is issuing the sixth Spare the Air Alert for smog on Wednesday, August 30. Air quality is forecast to be unhealthy. High pressure over the region will continue to produce clear skies, light winds and high inland temperatures across the Bay Area. These conditions, combined with motor vehicle exhaust, will produce unhealthy ozone levels. Smoke impacts from the fires near the California and Oregon border may also contribute to the formation of smog tomorrow.

The Air District is issuing the winter season’s first Spare the Air Alert for tomorrow, Friday, December 15, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors. Smoke from increased wood burning combined with light winds and low overnight temperatures is expected to cause unhealthy air quality. High pressure over northern California will act like a lid, trapping smoke at ground level. Offshore winds may also transport air pollution from the Central Valley into the Bay Area. 

The Air District is extending the Spare the Air Alert through Sunday, December 17, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors. Smoke from wood burning combined with light winds and low overnight temperatures is expected to continue causing air quality to be unhealthy in the Bay Area. A high-pressure system in place over Northern California will act like a lid, trapping smoke at ground level, and offshore winds are forecast to transport air pollution from the Central Valley into the Bay Area.

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