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Air Quality History for Hayward, United States

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

27
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 107 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-09-05 25 24–26 6.0 µg/m³ 17h 108
2026-09-04 22 14–28 5.3 µg/m³ 24h 109
2026-09-03 23 20–33 5.5 µg/m³ 24h 108
2026-09-02 26 21–30 6.2 µg/m³ 24h 107
2026-09-01 27 20–32 6.4 µg/m³ 24h 102
2026-08-31 31 26–35 7.4 µg/m³ 24h 112
2026-08-30 33 29–36 7.9 µg/m³ 24h 111
2026-08-29 25 20–29 6.0 µg/m³ 24h 112
2026-08-28 22 19–26 5.4 µg/m³ 24h 112
2026-08-27 20 15–25 4.8 µg/m³ 24h 111
2026-08-26 21 16–32 5.1 µg/m³ 24h 112
2026-08-25 19 15–21 4.5 µg/m³ 24h 111
2026-08-24 23 18–30 5.5 µg/m³ 24h 111
2026-08-23 24 19–36 5.7 µg/m³ 24h 109
2026-08-22 23 22–25 5.6 µg/m³ 4h 108
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