Worst air pollution Port Huron, today and tomorrow
Today (16 July): Air quality in Port Huron is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 35.4/100).
Tomorrow (17 July 2026): Air quality in Port Huron is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 33.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Port Huron's air quality benefits from Lake Huron's consistent lake winds providing maritime ventilation along the Michigan-Ontario border at the St. Clair River. Vehicle emissions from I-94 and the surrounding manufacturing and port operations contribute local sources, while the St. Clair River's cross-border industrial corridor from Sarnia Ontario contributes chemical and petrochemical background emissions under southerly wind conditions throughout the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
35.4/100
PM2.5 (fine particles):
Good
14.2/100
PM10 (coarse particles):
Good
12.2/100
NO2 (nitrogen dioxide):
Fair
24.2/100
O3 (ozone):
Fair
35.4/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
6.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
33.6/100
PM2.5 (fine particles):
Good
12.7/100
PM10 (coarse particles):
Good
10.0/100
NO2 (nitrogen dioxide):
Good
18.7/100
O3 (ozone):
Fair
33.6/100
SO2 (sulfur dioxide):
Good
3.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
7.3/100
Pollen forecast in Port Huron
View pollen forecastFrequently Asked Questions
Is air quality bad in Port Huron right now?
On 16 July 2026, overall air quality in Port Huron is fair. AQI is the main air quality indicator at 35.4/100. Pollution peaks around 12:00 PM (O3: 35.4/100).
Will air quality be worse tomorrow in Port Huron?
On 17 July 2026, air quality conditions in Port Huron will be similar to today, with AQI forecast at fair at 33.6/100. Pollution peaks around 10:00 AM (O3: 33.6/100).
When is air pollution at its worst in Port Huron?
Like most US cities, Port Huron sees air quality shift from season to season, as between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch; by contrast, summer heat waves are the main driver of poor air quality, as ozone builds under stagnant, humid conditions. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Port Huron based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app