Today | Weather | Tuesday, April 28, 2026

Active Weather Warnings

Flood Warning

Weather in Oshkosh, Wisconsin

03:12 AM

Now

54° F

Feels Like 45°

Precipitation 20 %

Wind 14 mph

Humidity 84 %

Today

Day 61°

Night 43°

Precipitation 7 %

Wind 13 mph

UV Index (0 - 11+) 2

Oshkosh Weather Forecast Updated

Last updated on April 28, 2026 at 1:46 AM

Air Quality in Oshkosh

NOW

34 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 1.35 µg/m³

PM₁₀ 1.44 µg/m³

O₃ 0.037 ppm

NO₂ 0.9 ppb

SO₂ 0.1 ppb

CO 0.15 ppm

NH₃ 1.2 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 – 1.35 µg/m³

PM₁₀ – 1.44 µg/m³

O₃ – 72.03 µg/m³

NO₂ – 1.68 µg/m³

SO₂ – 0.22 µg/m³

CO – 170.38 µg/m³

NH₃ – 1.2 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Oshkosh

Severe Immediate Observed

Flood Warning

Flood Warning issued April 27 at 8:25PM CDT by NWS Green Bay WI

Apr 27, 8:25 PM → Apr 28, 1:00 PM

...The Flood Warning continues for the following rivers in
Wisconsin...

Fox River at Oshkosh affecting Winnebago County.

Fox River at Lake Winnebago at Oshkosh affecting Winnebago County.

WHAT: Minor flooding is occurring. This approaches the flood of
record.

WHERE: Fox River at Lake Winnebago at Oshkosh.

WHEN: Until further notice.

ADDITIONAL DETAILS:
- At 8:15 PM CDT Monday the stage was 3.8 feet.
- Bankfull stage is 3.3 feet.
- Recent Activity...The maximum river stage in the 24 hours ending
at 8:15 PM CDT Monday was 4.2 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 3.7 feet.
- http://www.weather.gov/safety/flood

+ Read More

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/grb The next statement will be issued Tuesday afternoon by 100 PM CDT.

Updated: Apr 28, 1:46 AM Source: NWS Alert