What is the air quality trend in Park Forest?

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

How is Park Forest air quality measured?

Air quality in Park Forest 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 Park Forest, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Park Forest, 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 · 228 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	52	52–52	12.6 µg/m³	1h	228
2026-10-20	52	25–73	13.8 µg/m³	24h	201
2026-10-19	28	22–40	6.7 µg/m³	24h	229
2026-10-18	22	17–35	5.4 µg/m³	24h	211
2026-10-17	17	13–23	4.0 µg/m³	24h	229
2026-10-16	20	11–42	4.8 µg/m³	24h	219
2026-10-15	24	14–42	5.8 µg/m³	24h	229
2026-10-14	38	19–53	9.0 µg/m³	21h	228

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