What is the air quality trend in Willowbrook?

Over the past 2 days, Willowbrook had an average AQI of 5 based on station measurements. The worst day was 2026-05-28 with AQI 6.

How is Willowbrook air quality measured?

Air quality in Willowbrook 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 Willowbrook, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

27h

PM2.5 Station

27h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	5	4–8	1.2 µg/m³	1.4	12h	1
2026-05-28	6	4–17	1.4 µg/m³	1.7	15h	1

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