Today | Weather | Wednesday, May 20, 2026

Active Weather Warnings

Beach Hazards Statement

Weather in Milwaukee, Wisconsin

04:52 PM

Now

46° F

Feels Like 43°

Precipitation 0 %

Wind 12 mph

UV Index (0 - 11+) 2

Humidity 58 %

Today

Day 54°

Night 43°

Precipitation 1 %

Wind 10 mph

UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Milwaukee Weather Forecast Updated

21 minutes ago

Last updated on May 20, 2026 at 4:31 PM

Weather Forecast History

Last Year's Weather on This Day (May 20, 2025)

Day

46°

Night

45°

Wind

17 mph

UV Index

Precipitation

100 %

Air Quality in Milwaukee

NOW

41 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.85 µg/m³

PM₁₀ 3.33 µg/m³

O₃ 0.045 ppm

NO₂ 1.1 ppb

SO₂ 0.7 ppb

CO 0.11 ppm

NH₃ 0.98 µg/m³

NO 0.48 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 2.85 µg/m³

PM₁₀ – 3.33 µg/m³

O₃ – 87.41 µg/m³

NO₂ – 2.16 µg/m³

SO₂ – 1.85 µg/m³

CO – 128.97 µg/m³

NH₃ – 0.98 µg/m³

NO – 0.48 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Milwaukee

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued May 20 at 2:09PM CDT until May 21 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

May 20, 3:00 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, 4:31 PM Source: NWS Alert