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Advisory
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Planned prescribed burning on Angel Island Wednesday has been canceled.
Air quality is improving following today’s burn, and the Air District continues to monitor smoke across the region. Crews may remain on site tomorrow to extinguish remaining hot spots, but no additional prescribed burning is planned. Wednesday’s Spare the Air Alert is for ozone and is separate from today’s smoke impacts.
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Bawasan ang polusyon sa hangin. Remote na magtrabaho, maglakad, magbisikleta, makipag-carpool, o gumamit ng pampublikong transportasyon. |
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Giảm thiểu ô nhiễm không khí. Làm việc từ xa, đi bộ, đạp xe, đi chung xe hoặc sử dụng phương tiện giao thông công cộng. |
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Reduzca la contaminación atmosférica. Trabaje a distancia, camine, use la bicicleta, comparta el automóvil o use el transporte público. |
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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