Air Quality Informaton
- Spare the Air Status for Saturday, October 25, 2025
No Spare the Air Alert in Effect
AIRNow Alerts - San Francisco Bay Area AQMD
Union City, CA Current AQI (PurpleAir Sensor)
Realtime PurpleAir Sensor Map
PurpleAir Sensor Map courtesy of PurpleAir.com
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Northern Section: Burn
Southern Section: Burn
Coastal Section: Burn -
Northern Section: Burn
Southern Section: Burn
Coastal Section: Burn
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Location: Fremont, CACurrent Air Quality: 10/25/25 2:00 PM PDTGood - 24 AQI - Ozone
>Good - 12 AQI - Particle Pollution (2.5 microns)
>Agency: Bay Area Air DistrictLast Update: Sat, 25 Oct 2025 02:00:01 PST
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Location: Fremont, CAForecast: Today, 10/25/2025:Good - 33 AQI - Particle Pollution (2.5 microns)
>Tomorrow, 10/26/2025:Good - 39 AQI - Particle Pollution (2.5 microns)
>Monday, 10/27/2025:Good - 39 AQI - Particle Pollution (2.5 microns)
>Tuesday, 10/28/2025:Good - Particle Pollution (2.5 microns)
>Wednesday, 10/29/2025:Good - Particle Pollution (2.5 microns)
>Agency: Bay Area Air DistrictLast Update: Sat, 25 Oct 2025 02:00:02 PST
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AQI and Pollutant Forecast for Friday by district.
North Counties - AQI: 50, Pollutant: PM2.5.
Coast and Central Bay - AQI: 53, Pollutant: PM2.5.
Eastern District - AQI: 44, Pollutant: PM2.5
South and Central Bay - AQI: 39, Pollutant: PM2.5
Santa Clara Valley - AQI: 53, Pollutant: PM2.5 -
AQI and Pollutant Forecast for Saturday by district.
North Counties - AQI: 28, Pollutant: PM2.5.
Coast and Central Bay - AQI: 44, Pollutant: PM2.5.
Eastern District - AQI: 39, Pollutant: PM2.5
South and Central Bay - AQI: 33, Pollutant: PM2.5
Santa Clara Valley - AQI: 50, Pollutant: PM2.5 -
AQI and Pollutant Forecast for Sunday by district.
North Counties - AQI: 28, Pollutant: PM2.5.
Coast and Central Bay - AQI: 50, Pollutant: PM2.5.
Eastern District - AQI: 33, Pollutant: PM2.5
South and Central Bay - AQI: 39, Pollutant: PM2.5
Santa Clara Valley - AQI: 53, Pollutant: PM2.5 -
AQI and Pollutant Forecast for Monday by district.
North Counties - AQI: 39, Pollutant: PM2.5.
Coast and Central Bay - AQI: 53, Pollutant: PM2.5.
Eastern District - AQI: 39, Pollutant: PM2.5
South and Central Bay - AQI: 39, Pollutant: PM2.5
Santa Clara Valley - AQI: 53, Pollutant: PM2.5 -
AQI and Pollutant Forecast for Tuesday by district.
North Counties - AQI: Good, Pollutant: PM2.5.
Coast and Central Bay - AQI: Moderate, Pollutant: PM2.5.
Eastern District - AQI: Good, Pollutant: OZONE
South and Central Bay - AQI: Good, Pollutant: PM2.5
Santa Clara Valley - AQI: Moderate, Pollutant: PM2.5




