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Air Quality History for Princeton, United States

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

44
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 8 stations

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 37 37–37 8.9 µg/m³ 8.9 1h 8
2026-07-21 55 36–65 14.4 µg/m³ 22.0 24h 79
2026-07-20 48 30–72 12.4 µg/m³ 10.5 24h 75
2026-07-19 58 28–72 16.3 µg/m³ 25.1 24h 80
2026-07-18 142 74–166 62.2 µg/m³ 87.9 24h 79
2026-07-17 183 156–227 112.2 µg/m³ 117.1 24h 83
2026-07-16 147 91–172 58.9 µg/m³ 106.6 24h 76
2026-07-15 60 54–97 16.3 µg/m³ 24.6 24h 80
2026-07-14 45 36–55 11.0 µg/m³ 14.3 24h 80
2026-07-13 39 31–51 9.3 µg/m³ 9.9 24h 80
2026-07-12 47 40–54 11.3 µg/m³ 17.2 24h 77
2026-07-11 54 35–63 13.8 µg/m³ 18.7 24h 66
2026-07-10 52 30–61 13.3 µg/m³ 16.7 24h 78
2026-07-09 33 23–52 7.9 µg/m³ 8.2 24h 81
2026-07-08 21 12–57 5.0 µg/m³ 2.8 23h 83
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