What is the air quality trend in Des Plaines?

Over the past 11 days, Des Plaines had an average AQI of 36 based on station measurements. The worst day was 2026-07-16 with AQI 99.

How is Des Plaines air quality measured?

Air quality in Des Plaines 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 Des Plaines, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Des Plaines, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

160h

PM2.5 Station

160h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	23	1–76	6.4 µg/m³	20h	2
2026-07-20	45	25–74	11.6 µg/m³	24h	2
2026-07-19	48	25–68	12.8 µg/m³	24h	2
2026-07-18	13	3–29	3.1 µg/m³	18h	1
2026-07-17	97	18–157	34.4 µg/m³	24h	2
2026-07-16	99	5–169	36.7 µg/m³	21h	2
2026-07-07	12	4–23	2.9 µg/m³	4h	1
2026-07-06	14	4–33	3.3 µg/m³	4h	37
2026-07-05	7	4–12	1.8 µg/m³	17h	1
2026-07-03	2	2–2	0.4 µg/m³	1h	1
2026-07-02	36	23–54	8.8 µg/m³	3h	49

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