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Air Quality History for Portage, United States

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

21
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 256 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-21 52 52–52 12.8 µg/m³ 22.1 1h 256
2026-10-20 52 23–72 13.6 µg/m³ 1.1 24h 225
2026-10-19 28 22–42 6.8 µg/m³ 3.4 24h 256
2026-10-18 23 18–35 5.5 µg/m³ — 24h 236
2026-10-17 16 13–23 3.9 µg/m³ 4.5 24h 256
2026-10-16 19 11–41 4.6 µg/m³ 1.1 24h 245
2026-10-15 24 14–41 5.7 µg/m³ 1.6 24h 256
2026-10-14 39 18–55 9.5 µg/m³ 2.4 24h 256
2026-10-13 35 26–51 8.3 µg/m³ 1.4 24h 255
2026-10-12 43 32–55 10.3 µg/m³ 2.0 24h 256
2026-10-11 32 28–38 7.6 µg/m³ — 24h 256
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 20–36 6.3 µg/m³ — 24h 247
2026-10-07 28 23–42 6.6 µg/m³ 3.2 21h 235
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