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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.

27
Current AQI
Good Station

Air Quality Index Station

459h

PM2.5 Station

459h · 107 stations

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 20 20–21 5.0 µg/m³ 1.1 2h 110
2026-07-21 28 23–54 6.8 µg/m³ 4.9 24h 106
2026-07-20 22 17–65 5.4 µg/m³ 2.8 24h 100
2026-07-19 26 21–37 6.2 µg/m³ 4.3 24h 105
2026-07-18 28 22–51 6.8 µg/m³ 3.4 24h 106
2026-07-17 36 32–43 8.6 µg/m³ 8.7 24h 108
2026-07-16 41 30–200 14.1 µg/m³ 6.8 24h 100
2026-07-15 35 30–69 8.6 µg/m³ 5.9 24h 104
2026-07-14 33 30–43 7.8 µg/m³ 9.1 24h 103
2026-07-13 29 25–43 7.0 µg/m³ 5.4 24h 104
2026-07-12 24 20–36 5.8 µg/m³ 2.7 24h 99
2026-07-11 25 18–55 6.1 µg/m³ 1.8 24h 82
2026-07-10 37 26–61 8.9 µg/m³ 7.0 24h 99
2026-07-09 24 18–32 5.8 µg/m³ 3.0 24h 103
2026-07-08 26 24–29 6.2 µg/m³ 3.3 24h 108
2026-07-07 23 17–42 5.5 µg/m³ 2.5 24h 108
2026-07-06 18 16–20 4.2 µg/m³ 1.8 13h 99
2026-07-05 30 16–71 7.8 µg/m³ 6.2 24h 108
2026-07-04 22 18–26 5.3 µg/m³ 2.4 24h 108
2026-07-03 28 22–34 6.6 µg/m³ 3.8 24h 108
2026-07-02 38 28–67 9.6 µg/m³ 4.8 12h 90
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