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Air Quality History for Merrillville, United States

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

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

Air Quality Index Station

479h

PM2.5 Station

479h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 18 16–22 4.4 µg/m³ 6h 178
2026-06-08 44 27–53 10.5 µg/m³ 24h 214
2026-06-07 28 22–38 6.8 µg/m³ 24h 213
2026-06-06 42 28–59 10.3 µg/m³ 24h 204
2026-06-05 52 45–56 12.7 µg/m³ 24h 213
2026-06-04 40 28–48 9.6 µg/m³ 24h 213
2026-06-03 28 24–35 6.7 µg/m³ 24h 213
2026-06-02 23 21–27 5.6 µg/m³ 24h 214
2026-06-01 24 21–39 5.8 µg/m³ 24h 188
2026-05-31 24 20–29 5.7 µg/m³ 24h 214
2026-05-30 41 19–66 10.5 µg/m³ 24h 214
2026-05-29 26 19–32 6.1 µg/m³ 24h 214
2026-05-28 29 22–41 6.8 µg/m³ 24h 196
2026-05-27 44 30–59 10.8 µg/m³ 24h 213
2026-05-26 33 26–45 8.0 µg/m³ 24h 213
2026-05-25 49 31–73 13.1 µg/m³ 24h 213
2026-05-24 52 38–59 13.2 µg/m³ 24h 213
2026-05-23 28 21–39 6.7 µg/m³ 24h 212
2026-05-22 24 19–29 5.8 µg/m³ 24h 205
2026-05-21 22 15–41 5.4 µg/m³ 24h 214
2026-05-20 17 15–18 4.0 µg/m³ 17h 214
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