Today | Weather | Monday, June 29, 2026
Active Weather Warnings

Weather in Waukesha, Wisconsin

09:00 PM
Now
Cloudy Night
84° F
Feels Like 90°
Precipitation 0 %
Wind 9 mph
Humidity 75 %
Today
Cloudy Night
Day 91°
Night 73°
Precipitation 6 %
Wind 8 mph

Waukesha Weather Forecast Updated

46 minutes ago
Last updated on

Air Quality in Waukesha

NOW
39 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.45 µg/m³
PM10 11.94 µg/m³
O3 0.032 ppm
NO2 1.5 ppb
SO2 0.9 ppb
CO 0.11 ppm
NH3 1.07 µg/m³
NO 0 µg/m³
PM2.5 – 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)
PM2.59.45 µg/m³
PM1011.94 µg/m³
O363.55 µg/m³
NO22.91 µg/m³
SO22.48 µg/m³
CO123.96 µg/m³
NH31.07 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Waukesha

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued June 28 at 6:24AM CDT until June 30 at 8:00AM CDT by NWS Milwaukee/Sullivan WI
Jun 29, 12:00 PM Jun 30, 8:00 AM
WHAT: Dangerously hot conditions with heat index values up to 105
degrees possible throughout the day Monday, with high humidity and
continued heat index values above 75 degrees throughout the
overnight hours into Tuesday morning.

WHERE: Portions of east central, south central, and southeast
Wisconsin.

WHEN: From Monday afternoon through Tuesday morning.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Updated: Jun 28, 10:43 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued June 29 at 7:32PM CDT until July 1 at 7:00PM CDT by NWS Milwaukee/Sullivan WI
Jun 29, 7:32 PM Jul 1, 7:00 PM
WHAT: Dangerously hot conditions with heat index values up to 106.

WHERE: Portions of east central, south central, and southeast
Wisconsin.

WHEN: Until 7 PM CDT Wednesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Stay cool, stay hydrated, stay informed.
Updated: Jun 29, 8:13 PM Source: NWS Alert