What is the air quality trend in Crown Point?

Over the past 8 days, Crown Point had an average AQI of 31 based on station measurements. The worst day was 2026-10-21 with AQI 59.

How is Crown Point air quality measured?

Air quality in Crown Point 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 Crown Point, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 173 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	59	52–69	15.7 µg/m³	7h	174
2026-10-20	53	19–73	14.1 µg/m³	24h	154
2026-10-19	27	21–40	6.5 µg/m³	24h	175
2026-10-18	22	14–34	5.2 µg/m³	24h	161
2026-10-17	16	13–23	4.0 µg/m³	24h	176
2026-10-16	20	11–44	4.8 µg/m³	24h	168
2026-10-15	24	14–42	5.8 µg/m³	24h	174
2026-10-14	32	19–53	7.7 µg/m³	14h	174

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