What is the air quality trend in Forest Lake?

Over the past 8 days, Forest Lake had an average AQI of 45 based on station measurements. The worst day was 2026-08-04 with AQI 58.

How is Forest Lake air quality measured?

Air quality in Forest Lake 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 Forest Lake, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 16 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	42	35–47	10.0 µg/m³	4h	16
2026-08-07	43	32–59	10.5 µg/m³	24h	15
2026-08-06	30	29–33	7.3 µg/m³	24h	15
2026-08-05	33	26–53	7.9 µg/m³	24h	15
2026-08-04	58	45–72	15.5 µg/m³	24h	15
2026-08-03	54	43–64	13.7 µg/m³	24h	14
2026-08-02	53	50–56	13.1 µg/m³	24h	15
2026-08-01	51	39–61	12.9 µg/m³	18h	15

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