Worst air pollution Ephraim, today and tomorrow
Today (16 July): Air quality in Ephraim is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 36.4/100).
Tomorrow (17 July 2026): Air quality in Ephraim is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 29.7/100). 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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In Ephraim, Lake Michigan and Green Bay breezes is the main influence on air quality, and surrounding water keeps air quality consistently good. Day-to-day conditions in Ephraim can still vary with local weather, wind direction, and time of year. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 16 July | Pollution peaks at 06:00
AQI:
Fair
36.4/100
PM2.5 (fine particles):
Good
4.4/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
36.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
3.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 07:00
AQI:
Fair
29.7/100
PM2.5 (fine particles):
Good
5.7/100
PM10 (coarse particles):
Good
2.1/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
29.7/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
4.9/100
Pollen forecast in Ephraim
View pollen forecastFrequently Asked Questions
Is air quality bad in Ephraim right now?
On 16 July 2026, overall air quality in Ephraim is fair. AQI is the main air quality indicator at 36.4/100. Pollution peaks around 6:00 AM (O3: 36.4/100).
Will air quality be worse tomorrow in Ephraim?
On 17 July 2026, air quality conditions in Ephraim will be similar to today, with AQI forecast at fair at 29.7/100. Pollution peaks around 7:00 AM (O3: 29.7/100).
When is air pollution at its worst in Ephraim?
Seasonal changes shape air quality across Ephraim: between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, but hot, humid summer conditions drive ozone formation, especially during heat waves. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Ephraim 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.
Want to see air quality forecasts for other cities in United States?
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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