What is the air quality trend in Country Club Hills?

Over the past 8 days, Country Club Hills had an average AQI of 98 based on station measurements. The worst day was 2026-07-17 with AQI 231.

How is Country Club Hills air quality measured?

Air quality in Country Club Hills is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Country Club Hills, United States

Name: Country Club Hills Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Country Club Hills, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 7 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	24	18–32	5.8 µg/m³	4h	210
2026-07-21	62	32–97	18.3 µg/m³	24h	267
2026-07-20	98	57–106	34.3 µg/m³	24h	256
2026-07-19	111	71–160	40.7 µg/m³	24h	267
2026-07-18	50	33–88	13.0 µg/m³	24h	269
2026-07-17	231	70–358	177.4 µg/m³	24h	283
2026-07-16	155	52–326	101.0 µg/m³	24h	262
2026-07-15	59	51–165	16.8 µg/m³	19h	270

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