What is the air quality trend in Carol Stream?

Over the past 14 days, Carol Stream had an average AQI of 79 based on station measurements. The worst day was 2026-07-17 with AQI 232.

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

335h

PM2.5 Station

335h · 8 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	62	32–97	18.3 µg/m³	24h	253
2026-07-20	98	58–106	34.2 µg/m³	24h	254
2026-07-19	111	63–160	40.6 µg/m³	24h	265
2026-07-18	50	32–89	12.9 µg/m³	24h	264
2026-07-17	232	68–357	178.8 µg/m³	24h	278
2026-07-16	154	51–327	100.8 µg/m³	24h	258
2026-07-15	52	40–59	12.8 µg/m³	24h	268
2026-07-14	60	31–67	16.6 µg/m³	24h	261
2026-07-13	62	39–67	17.3 µg/m³	24h	267
2026-07-12	51	36–57	12.5 µg/m³	24h	255
2026-07-11	37	26–44	8.8 µg/m³	24h	211
2026-07-10	34	26–48	8.2 µg/m³	24h	257
2026-07-09	51	29–53	12.4 µg/m³	24h	270
2026-07-08	56	47–62	14.4 µg/m³	23h	281

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