What is the air quality trend in Peoria?

Over the past 8 days, Peoria had an average AQI of 57 based on station measurements. The worst day was 2026-07-20 with AQI 72.

How is Peoria air quality measured?

Air quality in Peoria 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 Peoria, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

122h

PM2.5 Station

122h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	50	25–72	13.5 µg/m³	11h	2
2026-07-20	72	15–133	23.1 µg/m³	13h	2
2026-07-19	53	23–122	15.1 µg/m³	17h	2
2026-07-18	61	9–198	23.3 µg/m³	16h	2
2026-07-17	70	18–199	30.9 µg/m³	22h	2
2026-07-16	70	26–307	33.9 µg/m³	19h	2
2026-07-15	45	16–60	11.2 µg/m³	21h	2
2026-07-14	39	25–50	9.5 µg/m³	3h	2

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