What is the air quality trend in Janesville?

Over the past 8 days, Janesville had an average AQI of 69 based on station measurements. The worst day was 2026-07-16 with AQI 129.

How is Janesville air quality measured?

Air quality in Janesville 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 Janesville, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

156h

PM2.5 Station

156h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	38	35–42	9.2 µg/m³	2h	2
2026-07-21	53	20–128	15.3 µg/m³	21h	3
2026-07-20	52	15–93	14.2 µg/m³	22h	3
2026-07-19	60	22–115	17.6 µg/m³	23h	3
2026-07-18	70	15–151	22.0 µg/m³	22h	3
2026-07-17	99	12–194	45.7 µg/m³	23h	3
2026-07-16	129	28–296	63.8 µg/m³	23h	4
2026-07-15	55	24–112	15.6 µg/m³	20h	3

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