Hourly Weather | Today Wednesday, May 20, 2026
Active Weather Warnings
Milwaukee, Wisconsin
8 PM
Cloudy Weather
46°
Feels Like 39°
0
Humidity: 65%
UV Index: 0
Wind: 10 mph
9 PM
Cloudy Night
45°
Feels Like 39°
0
Humidity: 71%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Weather
45°
Feels Like 37°
0
Humidity: 69%
UV Index: 0
Wind: 10 mph
11 PM
Cloudy Night
45°
Feels Like 37°
0
Humidity: 70%
UV Index: 0
Wind: 10 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.08 µg/m³
  • PM10: 2.73 µg/m³
  • O3: 0.040 ppm
  • NO2: 3 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.3 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.87 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.9 µg/m³
  • PM10: 1.54 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Weather Alerts and Warnings for Milwaukee

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued May 20 at 4:33PM CDT until May 21 at 1:00PM CDT by NWS Milwaukee/Sullivan WI
May 20, 4:33 PM May 21, 1:00 PM
WHAT: Life threatening waves of 3 to 5 feet and dangerous
currents are expected.

WHERE: Milwaukee, Racine and Kenosha Counties.

WHEN: Through Thursday afternoon.

IMPACTS: Dangerous swimming conditions are expected due to
high waves and onshore winds.
+ Read More
Stay out of the water and away from dangerous areas like piers and breakwalls. Strong structural and longshore currents are expected. Rip currents are possible.
Updated: May 20, 7:29 PM Source: NWS Alert