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Air Quality History for Merrillville, United States

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

51
Current AQI
Moderate Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-07-22 35 35–35 8.3 µg/m³ 1h 4
2026-07-21 63 33–98 18.8 µg/m³ 24h 205
2026-07-20 98 56–106 34.3 µg/m³ 24h 196
2026-07-19 111 49–160 40.5 µg/m³ 24h 205
2026-07-18 49 31–86 12.8 µg/m³ 24h 206
2026-07-17 233 68–362 179.8 µg/m³ 24h 216
2026-07-16 149 51–322 96.8 µg/m³ 24h 200
2026-07-15 59 52–173 17.2 µg/m³ 24h 210
2026-07-14 61 39–68 17.0 µg/m³ 24h 205
2026-07-13 62 37–68 17.5 µg/m³ 24h 208
2026-07-12 50 30–57 12.6 µg/m³ 24h 199
2026-07-11 38 23–45 9.0 µg/m³ 24h 165
2026-07-10 35 26–48 8.4 µg/m³ 24h 200
2026-07-09 51 28–53 12.4 µg/m³ 24h 210
2026-07-08 56 47–63 14.4 µg/m³ 23h 218
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