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Air Quality History for Keene, United States

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

22
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

368h

PM2.5 Station

368h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-07-22 29 18–36 7.0 µg/m³ 4h 1
2026-07-21 46 3–107 12.6 µg/m³ 20h 1
2026-07-20 49 8–159 15.1 µg/m³ 16h 1
2026-07-19 53 7–151 15.8 µg/m³ 18h 2
2026-07-18 64 3–205 24.4 µg/m³ 18h 2
2026-07-17 110 5–280 58.0 µg/m³ 21h 2
2026-07-16 63 9–195 32.3 µg/m³ 19h 1
2026-07-15 37 9–101 10.0 µg/m³ 20h 1
2026-07-14 40 12–83 10.4 µg/m³ 21h 2
2026-07-13 32 4–68 8.1 µg/m³ 20h 1
2026-07-12 32 4–54 7.8 µg/m³ 18h 2
2026-07-11 33 18–62 8.3 µg/m³ 19h 2
2026-07-10 32 16–50 7.6 µg/m³ 20h 2
2026-07-09 43 16–157 11.9 µg/m³ 19h 1
2026-07-08 35 5–64 8.5 µg/m³ 20h 2
2026-07-07 27 14–38 6.6 µg/m³ 19h 1
2026-07-06 33 21–57 8.0 µg/m³ 8h 1
2026-07-05 40 17–56 9.7 µg/m³ 20h 2
2026-07-04 27 6–55 6.6 µg/m³ 17h 1
2026-07-03 35 1–63 8.9 µg/m³ 22h 1
2026-07-02 24 5–57 5.8 µg/m³ 9h 1
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