What is the air quality trend in West Chicago?

Over the past 3 days, West Chicago had an average AQI of 33 based on station measurements. The worst day was 2026-06-08 with AQI 44.

How is West Chicago air quality measured?

Air quality in West Chicago 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 West Chicago, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

47h

PM2.5 Station

47h · 7 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	22	16–35	5.3 µg/m³	1.0	12h	224
2026-06-08	44	29–53	10.5 µg/m³	3.9	24h	244
2026-06-07	34	26–38	8.1 µg/m³	2.4	11h	244

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