Air District Operations

The Air District is taking steps to ensure Bay Area air quality and public health are protected while the shelter-in-place orders are in effect. Permits for businesses adjusting operations to aid in the public health response will also be expedited. Read more... | en Español

Wood Burning Prohibited

Spare the Air Alert in effect through Friday, October 2.  Wood burning is banned.  Burn bans can occur year-round for wildfires. Smoke from wildfires is impacting air quality.  See our hourly air quality data for the most up-to-date information, as well as Press Releases@AirDistrict, and our Wildfire Safety Tips web page.  Sign up for Bay Area Air Alerts.  en Español

About the Air District

Solano County

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

Latest News
  • Sep

    September 28, 2020

    Spare the Air Alert extended through Friday

    The Air District is extending the Spare the Air Alert due to wildfire smoke from the Glass Fire in Napa and Sonoma counties through Friday, October 2, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors. Wildfire smoke combined with high inland temperatures and vehicle exhaust may also cause unhealthy smog, or ozone, accumulation in the Bay Area.

  • Sep

    September 27, 2020

    Spare the Air Alert extended through Monday

    The Air District is extending the Spare the Air Alert for wildfire smoke from the Glass Fire in Napa County and for smog through Monday, September 28, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors.

  • Sep

    September 26, 2020

    Air District issues Spare the Air Alert for Sunday

    The Air District is issuing a Spare the Air Alert for smog for Sunday, September 27.

Solano County is bordered by Napa and Yolo counties to the north, Sacramento County to the east, and San Pablo Bay to the south. The Air District only has jurisdiction over the southwestern portion of the county, which includes Vallejo and Fairfield. One Solano County representative sits on the Air District’s Board of Directors.


During summer and fall months, high pressure offshore, coupled with thermal low pressure in the Central Valley, draws marine air eastward through the Carquinez Strait almost daily. Temperatures along the coast and inland tend to remain moderate. Winter temperatures range from cool overnight to moderate during the day, while summer temperatures range from moderate overnight to warm during the day. Afternoon westerly winds are common in the southern portion of the county, along the Carquinez Strait. Annual rainfall totals range from 13 inches near the coast to 22 inches inland in Fairfield.

Solano County's climate is also affected by regional Bay Area climate influences.

Interactive Air Monitoring Stations Map

Air Quality in Solano County

Ozone and fine particle pollution, or PM2.5, are the major regional air pollutants of concern in the San Francisco Bay Area. Ozone is primarily a problem in the summer, and fine particle pollution in the winter.

In summer, most of Solano County is exposed to prevailing westerly winds through the Carquinez Strait, which mixes and reduces ozone levels by drawing cooler, marine air from the Pacific Ocean and San Pablo Bay eastward. However, when the marine flow is weak or nonexistent, ozone levels may exceed health standards on a few days each year, mainly east of Suisun City.

In Solano County, PM2.5 concentrations can become elevated enough to exceed health standards during the winter when air pollution is transported from the Central Valley due to prevailing easterly winds. Local residential wood burning can also cause elevated particulate levels on cold, calm evenings during winter.

Interactive Air Quality Forecast Map

Resource Team

Solano County’s Spare the Air Resource Team promotes ways to reduce air pollution in the local community.

Spare the Air Status
No Wood Burning
Spare the Air Status
  • Tuesday,

    Spare the Air Alert in Effect

  • Wednesday,

    Spare the Air Alert in Effect

Last Updated: 2/14/2019