These are the PurpleAir outdoor air sensors in the Bay Area. We’re at an AQI of 200-350 all up and down the peninsula. That’s “very unhealthy” to “hazardous” air.
These are the PurpleAir outdoor air sensors in the Bay Area. We’re at an AQI of 200-350 all up and down the peninsula. That’s “very unhealthy” to “hazardous” air.
Asa Dotzler 