What is the air quality trend in Belvidere?

Over the past 8 days, Belvidere had an average AQI of 62 based on station measurements. The worst day was 2026-07-16 with AQI 80.

How is Belvidere air quality measured?

Air quality in Belvidere 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 Belvidere, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

111h

PM2.5 Station

111h · 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	34	18–49	8.0 µg/m³	2h	1
2026-07-21	54	14–106	15.6 µg/m³	13h	1
2026-07-20	69	2–134	22.1 µg/m³	14h	1
2026-07-19	63	10–193	25.3 µg/m³	13h	1
2026-07-18	68	26–183	24.0 µg/m³	16h	1
2026-07-17	57	21–255	22.8 µg/m³	18h	1
2026-07-16	80	26–217	32.2 µg/m³	18h	2
2026-07-15	72	19–173	24.4 µg/m³	17h	1

Back to Belvidere Air Quality