Today | Weather | Sunday, December 14, 2025

Active Weather Warnings

Cold Weather Advisory

Weather in Green Bay, Wisconsin

07:12 AM

Now

-4° F

Feels Like -26°

Precipitation 0 %

Wind 13 mph

Humidity 79 %

Today

Day 10°

Night 5°

Precipitation 1 %

Wind 12 mph

UV Index (0 - 11+) 2

Green Bay Weather Forecast Updated

Last updated on December 14, 2025 at 5:38 AM

Weather Forecast History

Last Year's Weather on This Day (December 14, 2024)

Day

34°

Night

34°

Wind

11 mph

Precipitation

100 %

Air Quality in Green Bay

NOW

34 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.86 µg/m³

PM₁₀ 1.17 µg/m³

O₃ 0.036 ppm

NO₂ 1.6 ppb

SO₂ 0.2 ppb

CO 0.13 ppm

NH₃ 0.52 µg/m³

NO 0 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 – 0.86 µg/m³

PM₁₀ – 1.17 µg/m³

O₃ – 71.37 µg/m³

NO₂ – 3.02 µg/m³

SO₂ – 0.57 µg/m³

CO – 144.77 µg/m³

NH₃ – 0.52 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Green Bay

Moderate Expected Likely

Cold Weather Advisory

Cold Weather Advisory issued December 14 at 4:55AM CST until December 14 at 10:00AM CST by NWS Green Bay WI

Dec 14, 4:55 AM → Dec 14, 10:00 AM

WHAT: Very cold wind chills as low as 30 below expected.

WHERE: Portions of central, east central, north central, and
northeast Wisconsin.

WHEN: Until 10 AM CST this morning.

IMPACTS: The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 20 minutes.
Wind chill values can lead to hypothermia with prolonged exposure.

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Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Updated: Dec 14, 5:38 AM Source: NWS Alert