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Air Quality History for Redwood City, United States

Historical PM2.5 and AQI trend from monitoring stations near Redwood City, United States.

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

Air Quality Index Station

457h

PM2.5 Station

457h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-07-22 5 5–5 1.1 µg/m³ 1.1 1h 1
2026-07-21 29 23–58 6.9 µg/m³ 4.9 24h 105
2026-07-20 22 17–69 5.5 µg/m³ 2.8 24h 99
2026-07-19 26 21–31 6.1 µg/m³ 4.3 24h 103
2026-07-18 28 22–39 6.6 µg/m³ 3.4 24h 104
2026-07-17 35 31–38 8.4 µg/m³ 8.7 24h 106
2026-07-16 42 25–247 15.8 µg/m³ 6.8 24h 98
2026-07-15 34 29–58 8.4 µg/m³ 5.9 24h 102
2026-07-14 32 30–40 7.7 µg/m³ 9.1 24h 101
2026-07-13 29 26–41 7.0 µg/m³ 5.4 24h 103
2026-07-12 24 21–28 5.7 µg/m³ 2.7 24h 98
2026-07-11 23 17–45 5.5 µg/m³ 1.8 23h 84
2026-07-10 37 27–59 9.0 µg/m³ 7.0 24h 98
2026-07-09 23 17–32 5.6 µg/m³ 3.0 23h 105
2026-07-08 26 23–29 6.2 µg/m³ 3.3 24h 107
2026-07-07 21 17–24 5.1 µg/m³ 2.5 24h 106
2026-07-06 16 4–20 3.9 µg/m³ 1.8 13h 98
2026-07-05 30 16–73 7.8 µg/m³ 6.2 24h 106
2026-07-04 22 18–25 5.2 µg/m³ 2.4 24h 106
2026-07-03 28 22–34 6.6 µg/m³ 3.8 24h 107
2026-07-02 36 12–85 9.5 µg/m³ 4.9 13h 82
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