Hourly Weather Forecast for West Allis, Wisconsin

Hourly Weather | Today › Friday, May 22, 2026

Active Weather Warnings

Beach Hazards Statement

West Allis, Wisconsin

7 AM

45°

Feels Like 37°

Humidity: 77%

UV Index: 0

Wind: 10 mph

8 AM

46°

Feels Like 43°

Humidity: 69%

UV Index: 1

Wind: 10 mph

9 AM

52°

Feels Like 46°

Humidity: 60%

UV Index: 1

Wind: 10 mph

10 AM

52°

Feels Like 48°

Humidity: 56%

UV Index: 2

Wind: 10 mph

11 AM

55°

Feels Like 54°

Humidity: 52%

UV Index: 3

Wind: 12 mph

12 PM

57°

Feels Like 57°

Humidity: 49%

UV Index: 4

Wind: 12 mph

1 PM

59°

Feels Like 61°

Humidity: 48%

UV Index: 4

Wind: 12 mph

2 PM

61°

Feels Like 61°

Humidity: 46%

UV Index: 4

Wind: 12 mph

3 PM

63°

Feels Like 63°

Humidity: 46%

UV Index: 3

Wind: 12 mph

4 PM

64°

Feels Like 63°

Humidity: 44%

UV Index: 2

Wind: 12 mph

5 PM

63°

Feels Like 61°

Humidity: 47%

UV Index: 1

Wind: 12 mph

6 PM

63°

Feels Like 59°

Humidity: 47%

UV Index: 1

Wind: 12 mph

7 PM

59°

Feels Like 55°

Humidity: 51%

UV Index: 0

Wind: 10 mph

8 PM

59°

Feels Like 55°

Humidity: 53%

UV Index: 0

Wind: 10 mph

9 PM

57°

Feels Like 54°

Humidity: 57%

UV Index: 0

Wind: 10 mph

10 PM

55°

Feels Like 52°

Humidity: 62%

UV Index: 0

Wind: 10 mph

11 PM

55°

Feels Like 52°

Humidity: 64%

UV Index: 0

Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.65 µg/m³
PM₁₀: 5.58 µg/m³
O₃: 0.034 ppm
NO₂: 4.2 ppb
SO₂: 0.9 ppb
CO: 0.13 ppm

Health Recommendations:

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

8 AM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.26 µg/m³
PM₁₀: 6.22 µg/m³
O₃: 0.035 ppm
NO₂: 4.4 ppb
SO₂: 1 ppb
CO: 0.13 ppm

Health Recommendations:

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

9 AM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.54 µg/m³
PM₁₀: 6.54 µg/m³
O₃: 0.036 ppm
NO₂: 4.2 ppb
SO₂: 1.1 ppb
CO: 0.13 ppm

Health Recommendations:

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

10 AM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.09 µg/m³
PM₁₀: 7.15 µg/m³
O₃: 0.038 ppm
NO₂: 3.6 ppb
SO₂: 1.2 ppb
CO: 0.13 ppm

Health Recommendations:

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

11 AM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.03 µg/m³
PM₁₀: 8.12 µg/m³
O₃: 0.040 ppm
NO₂: 3.2 ppb
SO₂: 1.3 ppb
CO: 0.13 ppm

Health Recommendations:

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

12 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.82 µg/m³
PM₁₀: 8.94 µg/m³
O₃: 0.042 ppm
NO₂: 3.2 ppb
SO₂: 1.3 ppb
CO: 0.13 ppm

Health Recommendations:

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

1 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 8.82 µg/m³
PM₁₀: 9.98 µg/m³
O₃: 0.045 ppm
NO₂: 3.1 ppb
SO₂: 1.4 ppb
CO: 0.13 ppm

Health Recommendations:

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

2 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.91 µg/m³
PM₁₀: 11.06 µg/m³
O₃: 0.050 ppm
NO₂: 2.6 ppb
SO₂: 1.4 ppb
CO: 0.14 ppm

Health Recommendations:

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

3 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.32 µg/m³
PM₁₀: 11.37 µg/m³
O₃: 0.054 ppm
NO₂: 2 ppb
SO₂: 1.3 ppb
CO: 0.13 ppm

Health Recommendations:

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

4 PM

59 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.24 µg/m³
PM₁₀: 12.23 µg/m³
O₃: 0.057 ppm
NO₂: 1.7 ppb
SO₂: 1.2 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM

63 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.87 µg/m³
PM₁₀: 11.85 µg/m³
O₃: 0.058 ppm
NO₂: 1.9 ppb
SO₂: 1.2 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM

58 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.28 µg/m³
PM₁₀: 10.31 µg/m³
O₃: 0.056 ppm
NO₂: 2.8 ppb
SO₂: 1.2 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.43 µg/m³
PM₁₀: 8.5 µg/m³
O₃: 0.054 ppm
NO₂: 3.7 ppb
SO₂: 1.2 ppb
CO: 0.14 ppm

Health Recommendations:

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

8 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.66 µg/m³
PM₁₀: 7.73 µg/m³
O₃: 0.051 ppm
NO₂: 4 ppb
SO₂: 1.2 ppb
CO: 0.14 ppm

Health Recommendations:

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

9 PM

44 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.16 µg/m³
PM₁₀: 7.22 µg/m³
O₃: 0.047 ppm
NO₂: 3.9 ppb
SO₂: 1.2 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.98 µg/m³
PM₁₀: 6.96 µg/m³
O₃: 0.045 ppm
NO₂: 4 ppb
SO₂: 1.1 ppb
CO: 0.14 ppm

Health Recommendations:

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

11 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6 µg/m³
PM₁₀: 6.89 µg/m³
O₃: 0.043 ppm
NO₂: 4.2 ppb
SO₂: 1 ppb
CO: 0.14 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for West Allis

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued May 22 at 5:04AM CDT until May 23 at 4:00PM CDT by NWS Milwaukee/Sullivan WI

May 22, 5:04 AM → May 23, 4:00 PM

WHAT: Life threatening waves of 3 to 5 feet and dangerous
currents are expected.

WHERE: Milwaukee, Racine and Kenosha Counties.

WHEN: Through Saturday 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 22, 5:29 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for West Allis

Beach Hazards Statement

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