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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
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 107 stations

Temperature GFS model

56pt

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 6.3 µg/m³ 3.5 21h 108
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