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Air Quality History for Napa, United States

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

17
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

478h

PM2.5 Station

478h · 23 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 20 18–23 4.8 µg/m³ 6h 23
2026-06-08 25 20–30 6.0 µg/m³ 24h 24
2026-06-07 26 22–28 6.1 µg/m³ 24h 23
2026-06-06 29 24–36 6.9 µg/m³ 24h 22
2026-06-05 36 32–42 8.7 µg/m³ 24h 22
2026-06-04 25 18–31 5.9 µg/m³ 24h 22
2026-06-03 30 25–34 7.1 µg/m³ 24h 22
2026-06-02 37 31–44 8.9 µg/m³ 24h 22
2026-06-01 34 20–54 8.1 µg/m³ 24h 20
2026-05-31 29 25–36 6.9 µg/m³ 24h 23
2026-05-30 27 18–46 6.4 µg/m³ 24h 22
2026-05-29 18 17–22 4.4 µg/m³ 24h 22
2026-05-28 26 15–74 6.4 µg/m³ 24h 21
2026-05-27 21 16–45 5.1 µg/m³ 24h 21
2026-05-26 21 16–28 5.0 µg/m³ 24h 22
2026-05-25 19 13–26 4.7 µg/m³ 24h 22
2026-05-24 20 16–23 4.7 µg/m³ 24h 22
2026-05-23 26 22–30 6.1 µg/m³ 24h 22
2026-05-22 29 24–52 7.0 µg/m³ 24h 23
2026-05-21 35 28–42 8.4 µg/m³ 24h 23
2026-05-20 34 28–41 8.1 µg/m³ 16h 23
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