What is the air quality trend in Pontiac?

Over the past 8 days, Pontiac had an average AQI of 109 based on station measurements. The worst day was 2026-07-17 with AQI 228.

How is Pontiac air quality measured?

Air quality in Pontiac 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 Pontiac, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	46	46–46	11.1 µg/m³	9.5	2h	2
2026-07-21	71	48–86	21.7 µg/m³	46.0	24h	24
2026-07-20	74	60–85	22.9 µg/m³	48.5	24h	24
2026-07-19	88	73–123	29.6 µg/m³	63.5	24h	25
2026-07-18	97	30–183	40.0 µg/m³	63.5	24h	25
2026-07-17	228	174–292	172.3 µg/m³	275.2	24h	27
2026-07-16	215	166–294	157.6 µg/m³	359.6	24h	24
2026-07-15	60	44–130	16.3 µg/m³	23.8	23h	23

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