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Air Quality History for Portage, United States

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

26
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

477h

PM2.5 Station

477h · 252 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-20 52 28–71 13.7 µg/m³ 1.1 24h 224
2026-10-19 28 22–42 6.8 µg/m³ 3.4 24h 255
2026-10-18 23 17–35 5.4 µg/m³ — 24h 235
2026-10-17 16 13–23 3.9 µg/m³ 4.5 24h 255
2026-10-16 19 10–40 4.6 µg/m³ 1.1 24h 244
2026-10-15 24 13–42 5.7 µg/m³ 1.6 24h 255
2026-10-14 39 18–55 9.5 µg/m³ 2.4 24h 254
2026-10-13 35 26–51 8.3 µg/m³ 1.4 24h 254
2026-10-12 43 32–55 10.3 µg/m³ 2.0 24h 254
2026-10-11 32 28–38 7.6 µg/m³ — 24h 255
2026-10-10 29 25–39 7.0 µg/m³ — 24h 222
2026-10-09 33 24–45 7.9 µg/m³ 2.1 24h 227
2026-10-08 26 20–35 6.3 µg/m³ — 24h 247
2026-10-07 27 23–42 6.5 µg/m³ 3.2 24h 236
2026-10-06 25 19–35 5.9 µg/m³ — 24h 236
2026-10-05 28 19–36 6.7 µg/m³ 9.2 24h 247
2026-10-04 24 17–34 5.8 µg/m³ 24.6 24h 227
2026-10-03 20 15–24 4.8 µg/m³ — 24h 240
2026-10-02 16 13–18 3.8 µg/m³ — 24h 248
2026-10-01 55 23–60 14.3 µg/m³ 1.7 21h 249
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