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Air Quality History for Smithtown, United States

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

5
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

473h

PM2.5 Station

473h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-21 72 27–109 22.8 µg/m³ 149.0 7h 4
2026-10-20 67 20–129 21.5 µg/m³ 149.0 24h 3
2026-10-19 59 17–92 18.5 µg/m³ 149.0 23h 3
2026-10-18 58 7–137 19.0 µg/m³ 149.0 24h 3
2026-10-17 60 3–166 20.9 µg/m³ 149.0 24h 3
2026-10-16 66 3–166 23.9 µg/m³ 149.0 24h 3
2026-10-15 71 12–166 25.0 µg/m³ 149.0 24h 3
2026-10-14 96 25–166 35.9 µg/m³ 149.0 23h 2
2026-10-13 83 24–166 30.0 µg/m³ 149.0 24h 3
2026-10-12 82 13–166 29.9 µg/m³ 149.0 23h 2
2026-10-11 62 14–166 20.5 µg/m³ 149.0 24h 3
2026-10-10 62 13–125 20.0 µg/m³ 149.0 24h 3
2026-10-09 65 15–166 21.8 µg/m³ 149.0 23h 3
2026-10-08 59 12–123 18.7 µg/m³ 149.0 24h 3
2026-10-07 32 12–94 9.1 µg/m³ 149.0 24h 3
2026-10-06 16 8–32 3.9 µg/m³ — 24h 2
2026-10-05 23 5–65 5.7 µg/m³ — 23h 3
2026-10-04 19 11–32 4.6 µg/m³ — 24h 3
2026-10-03 19 10–30 4.6 µg/m³ — 24h 3
2026-10-02 34 9–55 8.3 µg/m³ — 24h 3
2026-10-01 44 19–135 12.2 µg/m³ 149.0 15h 3
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