Today | Weather | Monday, April 27, 2026

Weather in St. George, Utah

11:17 AM
Now
Cloudy Weather
61° F
Feels Like 68°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 6
Humidity 42 %
Today
Sunny with a Chance of Thunderstorms
Day 72°
Night 46°
Precipitation 60 %
Wind 9 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

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
50 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.05 µg/m³
PM10 15.84 µg/m³
O3 0.054 ppm
NO2 0.5 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 5.77 µg/m³
NO 0.24 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)
PM2.54.05 µg/m³
PM1015.84 µg/m³
O3105.38 µg/m³
NO20.9 µg/m³
SO20.31 µg/m³
CO117.14 µg/m³
NH35.77 µg/m³
NO0.24 µg/m³