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Air Quality History for Castro Valley, United States

Historical PM2.5 and AQI trend from monitoring stations near Castro Valley, United States.

25
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

477h

PM2.5 Station

477h · 110 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-09-05 25 24–28 6.0 µg/m³ 3.8 20h 108
2026-09-04 22 13–28 5.3 µg/m³ 3.4 24h 109
2026-09-03 22 18–26 5.3 µg/m³ 3.0 24h 109
2026-09-02 26 20–32 6.3 µg/m³ 4.5 24h 107
2026-09-01 27 18–32 6.4 µg/m³ 5.3 24h 102
2026-08-31 31 26–35 7.3 µg/m³ 5.1 24h 112
2026-08-30 32 28–35 7.8 µg/m³ 6.9 24h 111
2026-08-29 25 21–28 6.0 µg/m³ 4.1 24h 112
2026-08-28 23 20–26 5.4 µg/m³ 3.3 24h 113
2026-08-27 20 15–24 4.7 µg/m³ 1.8 24h 112
2026-08-26 21 16–27 5.0 µg/m³ 1.7 24h 112
2026-08-25 19 16–20 4.4 µg/m³ 2.0 24h 111
2026-08-24 23 18–30 5.5 µg/m³ 2.3 24h 111
2026-08-23 24 18–36 5.7 µg/m³ 2.6 24h 110
2026-08-22 21 15–28 5.1 µg/m³ 2.0 24h 110
2026-08-21 17 14–20 4.1 µg/m³ 1.0 24h 110
2026-08-20 20 13–34 4.9 µg/m³ 3.3 24h 107
2026-08-19 41 32–48 9.9 µg/m³ 10.1 24h 105
2026-08-18 30 23–40 7.3 µg/m³ 6.9 24h 100
2026-08-17 28 23–37 6.7 µg/m³ 4.0 24h 104
2026-08-16 28 28–28 6.6 µg/m³ 5.1 1h 108
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