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Air Quality History for Cupertino, United States

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

19
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-07-22 5 5–5 1.1 µg/m³ 1.1 1h 1
2026-07-21 29 20–58 6.9 µg/m³ 4.9 24h 67
2026-07-20 22 18–51 5.2 µg/m³ 2.8 24h 62
2026-07-19 26 20–31 6.3 µg/m³ 4.3 24h 65
2026-07-18 28 24–33 6.7 µg/m³ 3.4 24h 65
2026-07-17 35 30–37 8.4 µg/m³ 8.7 24h 67
2026-07-16 34 22–52 8.1 µg/m³ 6.8 24h 62
2026-07-15 34 28–62 8.3 µg/m³ 5.9 24h 65
2026-07-14 32 28–37 7.7 µg/m³ 9.1 24h 64
2026-07-13 30 26–45 7.1 µg/m³ 5.4 24h 66
2026-07-12 24 21–27 5.6 µg/m³ 2.7 24h 62
2026-07-11 23 10–45 5.5 µg/m³ 1.8 23h 53
2026-07-10 38 27–62 9.1 µg/m³ 7.0 24h 62
2026-07-09 23 18–32 5.6 µg/m³ 3.0 23h 67
2026-07-08 25 23–29 6.1 µg/m³ 3.4 22h 68
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