What is the air quality trend in Wheaton?

Over the past 8 days, Wheaton had an average AQI of 98 based on station measurements. The worst day was 2026-07-17 with AQI 233.

How is Wheaton air quality measured?

Air quality in Wheaton 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 Wheaton, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Wheaton, 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 · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	30	27–32	7.0 µg/m³	2h	139
2026-07-21	62	32–97	18.3 µg/m³	24h	263
2026-07-20	98	60–107	34.3 µg/m³	24h	253
2026-07-19	111	52–160	40.6 µg/m³	24h	263
2026-07-18	49	26–89	12.8 µg/m³	24h	264
2026-07-17	233	69–359	179.5 µg/m³	24h	276
2026-07-16	153	51–328	100.4 µg/m³	24h	256
2026-07-15	54	51–94	13.6 µg/m³	21h	266

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