What is the air quality trend in Carol Stream?

Over the past 8 days, Carol Stream had an average AQI of 102 based on station measurements. The worst day was 2026-07-17 with AQI 233.

How is Carol Stream air quality measured?

Air quality in Carol Stream 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 Carol Stream, United States

Name: Carol Stream Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	63	32–97	18.6 µg/m³	23h	251
2026-07-20	98	50–106	34.1 µg/m³	24h	253
2026-07-19	111	52–160	40.5 µg/m³	24h	264
2026-07-18	49	26–89	12.7 µg/m³	24h	263
2026-07-17	233	69–360	179.6 µg/m³	24h	276
2026-07-16	156	51–329	101.7 µg/m³	24h	256
2026-07-15	53	51–59	13.0 µg/m³	24h	267
2026-07-14	59	59–59	16.1 µg/m³	1h	277

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