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Air Quality History for Princeton, United States

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

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

Air Quality Index Station

474h

PM2.5 Station

474h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-10-21 20 20–20 4.8 µg/m³ 1h 2
2026-10-20 19 9–27 4.5 µg/m³ 24h 2
2026-10-19 19 10–24 4.5 µg/m³ 24h 3
2026-10-18 23 12–31 5.5 µg/m³ 23h 3
2026-10-17 20 11–34 4.7 µg/m³ 24h 2
2026-10-16 27 9–207 11.2 µg/m³ 24h 2
2026-10-15 20 10–42 4.8 µg/m³ 24h 2
2026-10-14 23 15–36 5.6 µg/m³ 24h 2
2026-10-13 24 14–36 5.6 µg/m³ 24h 2
2026-10-12 21 10–28 5.0 µg/m³ 24h 2
2026-10-11 28 16–71 6.9 µg/m³ 24h 2
2026-10-10 24 15–51 5.8 µg/m³ 23h 2
2026-10-09 33 13–64 8.2 µg/m³ 24h 3
2026-10-08 41 25–68 10.3 µg/m³ 24h 2
2026-10-07 21 14–40 5.0 µg/m³ 24h 2
2026-10-06 21 9–51 5.0 µg/m³ 24h 2
2026-10-05 19 12–34 4.5 µg/m³ 24h 2
2026-10-04 25 18–56 6.1 µg/m³ 23h 2
2026-10-03 19 12–26 4.6 µg/m³ 23h 2
2026-10-02 23 14–36 5.4 µg/m³ 24h 2
2026-10-01 20 8–34 4.8 µg/m³ 21h 2
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