Worst air pollution Locust Street - Milwaukee, today and tomorrow
Today (9 August): Air quality in Locust Street is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 34.6/100).
Tomorrow (10 August 2026): Air quality in Locust Street is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 31.1/100). 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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Milwaukee's Locust Street air quality reflects the North Side residential and commercial corridor, with vehicle traffic on Locust Street and the surrounding mixed residential character contributing local sources. Lake Michigan's lake winds provide background ventilation, while the neighbourhood's residential character and the walkable scale generally maintain moderate Milwaukee metropolitan readings throughout most of the year.
Today - 9 August | Pollution peaks at 07:00
AQI:
Fair
34.6/100
PM2.5 (fine particles):
Good
5.6/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
13.3/100
O3 (ozone):
Fair
34.6/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.0/100
PM1 (ultrafine particles):
Good
6.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 10:00
AQI:
Fair
31.1/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Fair
21.5/100
O3 (ozone):
Fair
31.1/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
6.7/100
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Frequently Asked Questions
Is air quality bad in Locust Street right now?
On 9 August 2026, overall air quality in Locust Street is fair. AQI is the main air quality indicator at 34.6/100. Pollution peaks around 7:00 AM (O3: 34.6/100).
Will air quality be worse tomorrow in Locust Street?
On 10 August 2026, air quality conditions in Locust Street will be similar to today, with AQI forecast at fair at 31.1/100. Pollution peaks around 10:00 AM (O3: 31.1/100).
When is air pollution at its worst in Locust Street?
Locust Street experiences the same seasonal air quality swings as the rest of Milwaukee. Typically, the cleanest stretches usually come in spring and fall, between the summer ozone season and the calmer winter pollution episodes, while the hottest, most humid summer days bring the year's worst ozone readings. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Locust Street 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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