Portola Valley Real-time Air Quality Index (AQI) & Pollen Report - Air Matters

Portola Valley

San Mateo County, California

2025-12-11 02:00

CAQI (Europe)

Very Low

Pollutants|Pollens

PM2.5

μg/m³

14

Weather

10℃

83%

9 kph

0 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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