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Air Quality History for Merrillville, United States

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

32
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 214 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-10-20 53 28–73 14.1 µg/m³ 24h 191
2026-10-19 28 21–41 6.7 µg/m³ 24h 217
2026-10-18 22 17–35 5.3 µg/m³ 24h 200
2026-10-17 16 13–23 4.0 µg/m³ 24h 217
2026-10-16 20 10–42 4.7 µg/m³ 24h 208
2026-10-15 24 13–42 5.8 µg/m³ 24h 217
2026-10-14 40 19–55 9.6 µg/m³ 24h 216
2026-10-13 35 26–52 8.3 µg/m³ 24h 215
2026-10-12 42 32–56 10.2 µg/m³ 24h 216
2026-10-11 32 28–38 7.6 µg/m³ 24h 217
2026-10-10 29 25–40 7.0 µg/m³ 24h 189
2026-10-09 33 24–46 7.9 µg/m³ 24h 193
2026-10-08 27 20–36 6.5 µg/m³ 24h 210
2026-10-07 28 23–42 6.7 µg/m³ 21h 200
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