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Air Quality History for Cupertino, United States

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

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

Air Quality Index Station

333h

PM2.5 Station

333h · 71 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-21 25 25–25 6.1 µg/m³ — 1h 71
2026-10-20 23 17–57 5.6 µg/m³ 2.2 24h 62
2026-10-19 23 20–28 5.6 µg/m³ 1.6 24h 69
2026-10-18 31 16–36 7.4 µg/m³ 4.3 24h 64
2026-10-17 27 22–31 6.6 µg/m³ 5.1 24h 71
2026-10-16 28 15–35 6.7 µg/m³ 4.7 24h 68
2026-10-15 29 25–34 6.9 µg/m³ 4.3 24h 74
2026-10-14 24 20–31 5.7 µg/m³ 4.3 24h 74
2026-10-13 24 19–29 5.9 µg/m³ 4.0 24h 74
2026-10-12 25 22–28 6.1 µg/m³ 2.9 24h 75
2026-10-11 27 25–30 6.6 µg/m³ 6.4 24h 75
2026-10-10 29 25–38 7.0 µg/m³ 4.6 24h 67
2026-10-09 35 29–38 8.3 µg/m³ 7.5 24h 69
2026-10-08 28 25–33 6.7 µg/m³ 3.1 24h 75
2026-10-07 27 23–31 6.4 µg/m³ 3.7 20h 72
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