What is the air quality trend in Oak Park?

Over the past 7 days, Oak Park had an average AQI of 36 based on station measurements. The worst day was 2026-05-24 with AQI 52.

How is Oak Park air quality measured?

Air quality in Oak Park 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 Oak Park, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Oak Park, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	25	5–56	6.0 µg/m³	1.2	23h	258
2026-05-28	28	22–39	6.7 µg/m³	2.3	24h	259
2026-05-27	43	30–58	10.6 µg/m³	10.2	24h	282
2026-05-26	33	27–43	7.9 µg/m³	3.8	24h	281
2026-05-25	48	31–72	12.9 µg/m³	10.3	24h	281
2026-05-24	52	38–59	13.0 µg/m³	1.7	24h	281
2026-05-23	28	21–37	6.6 µg/m³	1.2	24h	279

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