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Notice
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The Air District Board approved updates to the zero-NOx water heater rule that delay implementation to January 2028 and allow exemptions for low-income homeowners, properties with electrical limitations and space-constrained homes. View press release(181 Kb PDF, 2 pgs, posted 04/11/2026).
Obtenga información actual e histórica de la calidad del aire y del clima para el Área de la Bahía.
Vea la información actual e histórica sobre la calidad del aire y el clima tomados de la red de monitoreo del aire del Distrito.
| 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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Last Updated: 13/10/2017