What is the air quality trend in Algonquin?

Over the past 8 days, Algonquin had an average AQI of 37 based on station measurements. The worst day was 2026-05-24 with AQI 51.

How is Algonquin air quality measured?

Air quality in Algonquin 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 Algonquin, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	43	32–55	10.7 µg/m³	5.2	5h	76
2026-05-29	26	19–32	6.2 µg/m³	1.4	24h	123
2026-05-28	27	21–40	6.5 µg/m³	2.3	24h	113
2026-05-27	45	27–63	11.2 µg/m³	10.2	24h	123
2026-05-26	31	26–45	7.6 µg/m³	3.8	24h	123
2026-05-25	49	29–74	13.3 µg/m³	10.3	24h	124
2026-05-24	51	36–59	12.9 µg/m³	1.7	24h	123
2026-05-23	29	21–38	7.0 µg/m³	1.2	18h	121

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