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Today | Weather | Wednesday, December 24, 2025
Active Weather Warnings

Weather in St. Joseph, Missouri

12:10 PM
Now
Cloudy Weather
55° F
Feels Like 57°
Precipitation 5 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 77 %
Today
Cloudy Weather
Day 59°
Night 43°
Precipitation 25 %
Wind 5 mph
UV Index (0 - 11+) 2

St. Joseph Weather Forecast Updated

Last updated on

Air Quality in St. Joseph

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

Pollutant Concentrations:

PM2.5 5.11 µg/m³
PM10 6.15 µg/m³
O3 0.020 ppm
NO2 2.7 ppb
SO2 0.3 ppb
CO 0.14 ppm
NH3 0.13 µg/m³
NO 0.4 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)
PM2.5 – 5.11 µg/m³
PM10 – 6.15 µg/m³
O3 – 39.09 µg/m³
NO2 – 5.1 µg/m³
SO2 – 0.68 µg/m³
CO – 162.14 µg/m³
NH3 – 0.13 µg/m³
NO – 0.4 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for St. Joseph

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued December 24 at 10:02AM CST until December 24 at 12:00PM CST by NWS Kansas City/Pleasant Hill MO
Dec 24, 10:02 AM → Dec 24, 12:00 PM
WHAT: Visibility one quarter to one half mile in dense fog.

WHERE: In Kansas, Atchison KS and Doniphan Counties. In Missouri,
Caldwell, Daviess, Andrew, Buchanan, Clinton, De Kalb, and Holt
Counties.

WHEN: Until noon CST today.

IMPACTS: Low visibility could make driving conditions hazardous.
+ Read More
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Updated: Dec 24, 10:29 AM Source: NWS Alert