Today | Weather | Monday, April 27, 2026

Active Weather Warnings

Flood Watch

Weather in St. Joseph, Missouri

01:50 PM

Now

72° F

Feels Like 70°

Precipitation 25 %

Wind 20 mph

UV Index (0 - 11+) 3

Humidity 64 %

Today

Day 72°

Night 41°

Precipitation 49 %

Wind 15 mph

UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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.

St. Joseph Weather Forecast Updated

7 minutes ago

Last updated on April 27, 2026 at 1:43 PM

Air Quality in St. Joseph

NOW

30 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 1.67 µg/m³

PM₁₀ 1.75 µg/m³

O₃ 0.032 ppm

NO₂ 0.4 ppb

SO₂ 0.2 ppb

CO 0.12 ppm

NH₃ 1.54 µg/m³

NO 0.16 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 – 1.67 µg/m³

PM₁₀ – 1.75 µg/m³

O₃ – 62.61 µg/m³

NO₂ – 0.72 µg/m³

SO₂ – 0.6 µg/m³

CO – 138.97 µg/m³

NH₃ – 1.54 µg/m³

NO – 0.16 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for St. Joseph

Severe Future Possible

Flood Watch

Flood Watch issued April 26 at 10:22PM CDT until April 27 at 7:00PM CDT by NWS Kansas City/Pleasant Hill MO

Apr 26, 10:22 PM → Apr 27, 7:00 PM

WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of Kansas, including the following areas,
Atchison KS, Doniphan, Johnson KS, Leavenworth and Wyandotte and
Missouri, including the following areas, Andrew, Buchanan,
Caldwell, Carroll, Chariton, Clay, Clinton, Daviess, De Kalb,
Holt, Howard, Jackson, Lafayette, Linn MO, Livingston, Macon,
Platte, Randolph, Ray and Saline.

WHEN: Through Monday evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Multiple rounds of heavy rainfall tonight through Monday.
- http://www.weather.gov/safety/flood

+ Read More

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Updated: Apr 27, 12:02 PM Source: NWS Alert