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

Weather in Green Bay, Wisconsin

08:58 PM
Now
Cloudy Night
82° F
Feels Like 88°
Precipitation 7 %
Wind 9 mph
Humidity 79 %
Today
Cloudy Night
Day 90°
Night 75°
Precipitation 25 %
Wind 8 mph

Green Bay Weather Forecast Updated

18 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 29, 2025)
Sunny with a Chance of Thunderstorms

Day

91°

Night

70°

Wind

8 mph

UV Index

10

Precipitation

65 %

Air Quality in Green Bay

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.62 µg/m³
PM10 8.95 µg/m³
O3 0.031 ppm
NO2 1.1 ppb
SO2 0.4 ppb
CO 0.10 ppm
NH3 1.3 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)
PM2.56.62 µg/m³
PM108.95 µg/m³
O361.55 µg/m³
NO22 µg/m³
SO21.16 µg/m³
CO119.49 µg/m³
NH31.3 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Green Bay

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued June 29 at 5:52PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI
Jun 29, 5:52 PM Jun 30, 7:00 PM
WHAT: Dangerously hot conditions with heat index values up to 109
expected. Overnight heat indices will remain around 75 degrees,
which will still be hazardous for anyone without shelter after the
extreme heat in the afternoon.

WHERE: Marathon, Portage, Waushara, Wood, Calumet, Winnebago,
Brown, Outagamie, Shawano, and Waupaca Counties.

WHEN: Until 7 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Jun 29, 8:39 PM Source: NWS Alert