What is the air quality trend in Wauwatosa?

Over the past 8 days, Wauwatosa had an average AQI of 23 based on station measurements. The worst day was 2026-10-21 with AQI 54.

How is Wauwatosa air quality measured?

Air quality in Wauwatosa 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 Wauwatosa, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

117h

PM2.5 Station

117h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	54	30–72	15.4 µg/m³	7h	3
2026-10-20	49	18–71	13.0 µg/m³	16h	3
2026-10-19	18	15–22	4.3 µg/m³	14h	3
2026-10-18	14	11–19	3.4 µg/m³	19h	3
2026-10-17	9	5–22	2.1 µg/m³	16h	3
2026-10-16	11	5–23	2.8 µg/m³	18h	2
2026-10-15	19	14–25	4.5 µg/m³	19h	3
2026-10-14	17	13–32	4.1 µg/m³	8h	3

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