Today | Weather | Wednesday, February 25, 2026

Weather in St. Joseph, Missouri

10:18 PM
Now
Cloudy Weather
43° F
Feels Like 30°
Precipitation 49 %
Wind 15 mph
Humidity 65 %
Today
Rainy Weather
Day 57°
Night 27°
Precipitation 60 %
Wind 13 mph
Overnight Frost 4 AM – 7 AM
Tomorrow Morning Frost 6 AM – 8 AM

St. Joseph Weather Forecast Updated

Last updated on

Air Quality in St. Joseph

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.21 µg/m³
PM10 5.97 µg/m³
O3 0.038 ppm
NO2 3.6 ppb
SO2 0.3 ppb
CO 0.17 ppm
NH3 1.41 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)
PM2.55.21 µg/m³
PM105.97 µg/m³
O375.42 µg/m³
NO26.76 µg/m³
SO20.89 µg/m³
CO192.06 µg/m³
NH31.41 µg/m³
NO0 µg/m³