What is the air quality trend in South Chicago?

Over the past 3 days, South Chicago had an average AQI of 42 based on station measurements. The worst day was with AQI .

How is South Chicago air quality measured?

Air quality in South Chicago 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 Chicago, United States

Name: South Chicago 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 Chicago, United States.

Current AQI
Moderate

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

46h · 273 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-12	49	40–55	11.8 µg/m³	13h	273
2026-04-11	43	35–53	10.3 µg/m³	24h	272
2026-04-10	34	26–47	8.2 µg/m³	9h	271

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