What is the air quality trend in South Elgin?

Over the past 8 days, South Elgin had an average AQI of 98 based on station measurements. The worst day was 2026-07-17 with AQI 227.

How is South Elgin air quality measured?

Air quality in South Elgin 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 South Elgin, United States

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	34	34–34	8.1 µg/m³	1h	6
2026-07-21	61	32–97	17.9 µg/m³	24h	119
2026-07-20	98	38–109	34.3 µg/m³	24h	115
2026-07-19	110	59–160	40.5 µg/m³	24h	121
2026-07-18	51	33–89	13.4 µg/m³	23h	125
2026-07-17	227	70–349	172.9 µg/m³	24h	127
2026-07-16	153	50–321	99.4 µg/m³	24h	118
2026-07-15	52	51–57	12.7 µg/m³	23h	122

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