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Advisory
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Permit Public Comment Extension
The public comment period for Permit Application #704470 (CA-002 Somo Village) has been extended and will now end on October 3, 2025. Please visit our Public Notices page for more information.
The public comment period for Permit Application #704470 (CA-002 Somo Village) has been extended and will now end on October 3, 2025. Please visit our Public Notices page for more information.
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Air Quality Forecasts
Get daily forecasts of air quality in the Bay Area.
Air District meteorologists issue daily forecasts for air quality.
Available daily forecasts include:
- Five-day air quality forecasts, which use the U.S. EPA’s Air Quality Index.
- Burn day forecasts that tell whether open burning is currently allowed in the Bay Area.
- Spare the Air Alert notifications, which appear on every page of the website - see status box on the right column of your screen.
| Air Quality Index Levels of Health Concern | Numerical Value |
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| Good | 0 to 50 |
| Moderate | 51 to 100 |
| Unhealthy for Sensitive Groups | 101 to 150 |
| Unhealthy | 151 to 200 |
| Very Unhealthy | 201 to 300 |
| Hazardous | 301 to 500 |
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Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the "Hazardous category." See additional information on reducing exposure to extremely high levels of particle pollution. |
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Contact Us
Communications
General Information
415.749.4900
Meteorology & Measurements
Air Monitoring
415.749.4985
Last Updated: 3/27/2025