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Air Quality History for Walnut Creek, United States

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

21
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-05-29 19 8–23 4.6 µg/m³ 4.3 16h 89
2026-05-28 23 15–54 5.6 µg/m³ 3.7 24h 93
2026-05-27 21 20–25 5.0 µg/m³ 3.2 24h 102
2026-05-26 21 15–28 5.1 µg/m³ 3.8 24h 102
2026-05-25 18 15–25 4.4 µg/m³ 1.8 24h 102
2026-05-24 20 17–24 4.8 µg/m³ 1.4 24h 101
2026-05-23 25 23–30 6.0 µg/m³ 2.9 24h 103
2026-05-22 30 26–43 7.3 µg/m³ 4.1 24h 99
2026-05-21 41 32–48 9.8 µg/m³ 13.0 24h 103
2026-05-20 37 26–41 8.8 µg/m³ 11.4 24h 104
2026-05-19 28 18–33 6.8 µg/m³ 13.5 24h 102
2026-05-18 18 16–23 4.4 µg/m³ 4.1 24h 100
2026-05-17 34 28–38 8.1 µg/m³ 7.6 24h 101
2026-05-16 35 29–42 8.5 µg/m³ 8.9 24h 100
2026-05-15 32 31–34 7.8 µg/m³ 6.3 8h 103
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