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San Jose, CA Air Quality Index



Realtime Air Quality Data
Realtime Location: San Jose, CA
Issue Date: 11/18/25 5:00 AM PST

Current Air Quality Index

Good 18



Realtime AQI - Pollutant Details
Type: Ozone
Index: Good
AQI Value: 18		 Good

Type: Particle Pollution (2.5 microns)
Index: Good
AQI Value: 1
Good

Last Update:Tue, 18 Nov 2025 05:45:02 PST
Realtime Air Quality Data
Realtime Location:Saratoga-Weather.org - PurpleAir sensor More...
Issue Date: Tue, 18-Nov-2025 5:53am PST

Current Air Quality Index

Good 8

0-50 Good
51-100 Moderate
101-150 Unhealthy for Sensitive Groups
151-200 Unhealthy
201-300 Very Unhealthy
301-500 Hazardous


Air Quality Forecast
Forecast Location: San Jose, CA
Forecast Agency: Bay Area Air District
Two Day Forecast
Day One Forecast Day Two Forecast
Date: 11/18/2025
Type: Particle Pollution (2.5 microns)
Index: Moderate
AQI Value: 55

Moderate
Date: 11/19/2025
Type: Particle Pollution (2.5 microns)
Index: Moderate
AQI Value: 51-100

Moderate
Last Update:Tue, 18 Nov 2025 05:45:03 PST
Script courtesy of  Michael Holden of Relay Weather. Data courtesy of Airnow.gov





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