Today | Weather | Tuesday, April 7, 2026

Weather in St. George, Utah

07:39 AM
Now
Cloudy Weather
52° F
Feels Like 55°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 1
Humidity 40 %
Today
Cloudy Weather
Day 88°
Night 52°
Precipitation 0 %
Wind 8 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. George Weather Forecast Updated

Last updated on

Air Quality in St. George

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.06 µg/m³
PM10 13.6 µg/m³
O3 0.037 ppm
NO2 1.3 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 47.96 µg/m³
NO 0.01 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)
PM2.55.06 µg/m³
PM1013.6 µg/m³
O373.55 µg/m³
NO22.49 µg/m³
SO20.14 µg/m³
CO124.42 µg/m³
NH347.96 µg/m³
NO0.01 µg/m³