What is the air quality trend in Pontiac?

Over the past 8 days, Pontiac had an average AQI of 110 based on station measurements. The worst day was 2026-07-17 with AQI 233.

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	26	8–39	6.3 µg/m³	6.9	4h	12
2026-07-21	73	45–89	22.6 µg/m³	46.0	24h	22
2026-07-20	76	63–88	23.8 µg/m³	48.5	24h	23
2026-07-19	90	75–133	30.7 µg/m³	63.5	24h	23
2026-07-18	100	42–188	42.3 µg/m³	63.5	24h	23
2026-07-17	233	177–302	178.0 µg/m³	275.2	24h	25
2026-07-16	229	168–316	174.3 µg/m³	359.6	24h	22
2026-07-15	58	48–126	15.2 µg/m³	24.0	21h	22

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