What is the air quality trend in Freeport?

Over the past 8 days, Freeport had an average AQI of 75 based on station measurements. The worst day was 2026-07-17 with AQI 157.

How is Freeport air quality measured?

Air quality in Freeport 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 Freeport, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

119h

PM2.5 Station

119h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	44	44–44	10.6 µg/m³	1h	1
2026-07-21	54	16–106	15.3 µg/m³	12h	1
2026-07-20	59	13–113	17.9 µg/m³	16h	2
2026-07-19	50	12–160	15.0 µg/m³	18h	2
2026-07-18	66	8–171	24.2 µg/m³	16h	2
2026-07-17	157	10–298	109.4 µg/m³	18h	2
2026-07-16	78	5–199	31.6 µg/m³	20h	2
2026-07-15	94	21–351	50.2 µg/m³	18h	2

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