Today | Weather | Thursday, February 5, 2026

Weather in St. Joseph, Missouri

07:33 PM
Now
Cloudy Night
39° F
Feels Like 37°
Precipitation 0 %
Wind 6 mph
Humidity 80 %
Today
Cloudy Weather
Day 61°
Night 34°
Precipitation 0 %
Wind 13 mph
UV Index (0 - 11+) 3

St. Joseph Weather Forecast Updated

55 minutes ago
Last updated on

Air Quality in St. Joseph

NOW
34 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.65 µg/m³
PM10 3.34 µg/m³
O3 0.036 ppm
NO2 3.4 ppb
SO2 0.1 ppb
CO 0.15 ppm
NH3 1.38 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)
PM2.52.65 µg/m³
PM103.34 µg/m³
O371.63 µg/m³
NO26.34 µg/m³
SO20.27 µg/m³
CO175.55 µg/m³
NH31.38 µg/m³
NO0 µg/m³