What is the air quality trend in Downers Grove?

Over the past 8 days, Downers Grove had an average AQI of 48 based on station measurements. The worst day was 2026-08-07 with AQI 54.

How is Downers Grove air quality measured?

Air quality in Downers Grove 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 Downers Grove, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	44	37–64	10.9 µg/m³	—	6h	180
2026-08-07	54	37–63	14.2 µg/m³	2.3	24h	207
2026-08-06	53	40–65	13.7 µg/m³	2.8	24h	199
2026-08-05	53	50–56	13.3 µg/m³	3.6	24h	188
2026-08-04	47	38–52	11.2 µg/m³	2.9	24h	183
2026-08-03	39	27–54	9.4 µg/m³	1.3	24h	167
2026-08-02	46	43–50	11.1 µg/m³	2.1	24h	162
2026-08-01	48	42–54	11.6 µg/m³	1.8	16h	160

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