Worst air pollution Sister Bay, today and tomorrow
Today (16 July): Air quality in Sister Bay 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 Sister Bay is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 AM (O3: 29.7/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Sister Bay's air quality is shaped largely by Lake Michigan and Green Bay breezes; surrounding water keeps air quality consistently good. Overall, Sister Bay sees air quality that tracks fairly closely with typical conditions for its wider region. Checking current readings is still the best way to plan outdoor activity around Sister Bay.
Today - 16 July | Pollution peaks at 06:00
AQI:
Fair
36.4/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
18.5/100
O3 (ozone):
Fair
36.4/100
SO2 (sulfur dioxide):
Good
4.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
7.6/100
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
11.5/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Fair
27.6/100
O3 (ozone):
Fair
29.7/100
SO2 (sulfur dioxide):
Good
3.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
9.9/100
Pollen forecast in Sister Bay
View pollen forecastFrequently Asked Questions
Is air quality bad in Sister Bay right now?
On 16 July 2026, overall air quality in Sister Bay 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 Sister Bay?
On 17 July 2026, air quality conditions in Sister Bay 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 Sister Bay?
Sister Bay follows a fairly predictable seasonal air quality pattern, as the cleanest stretches usually come in spring and fall, between the summer ozone season and the calmer winter pollution episodes; by contrast, prolonged summer heat waves are when air quality most often dips into unhealthy territory. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Sister Bay 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