San Francisco air quality remains 'unhealthy' at red - Curbed SF

Curbed SF
San Francisco air quality remains 'unhealthy' at red
Curbed SF
Update: As of 7 p.m., the San Francisco AQI number is at 143. After Friday's record-breaking air quality levels in San Francisco—the SF's Air Quality Index [AQI] jumped to 271, the worst in the state's recorded history—Saturday's level dipped to a ...
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