What is the air quality trend in East Chicago?

Over the past 8 days, East Chicago had an average AQI of 31 based on station measurements. The worst day was 2026-10-20 with AQI 52.

How is East Chicago air quality measured?

Air quality in East 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 East Chicago, United States

Name: East 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 East Chicago, 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 · 281 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	52	24–71	13.7 µg/m³	1.0	20h	243
2026-10-19	28	22–41	6.7 µg/m³	3.4	24h	284
2026-10-18	23	18–35	5.4 µg/m³	—	24h	261
2026-10-17	16	13–23	3.9 µg/m³	4.5	24h	283
2026-10-16	19	11–40	4.5 µg/m³	1.1	24h	271
2026-10-15	24	14–41	5.8 µg/m³	1.6	24h	284
2026-10-14	39	18–54	9.4 µg/m³	2.4	24h	283
2026-10-13	50	49–50	11.9 µg/m³	1.1	2h	284

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