Today | Weather | Monday, September 21, 2026

Weather in Lehi, Utah

12:55 PM
Now
Cloudy Weather
73° F
Feels Like 79°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 5
Humidity 32 %
Today
Cloudy Weather
Day 81°
Night 55°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5

Lehi Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Sunny with a Chance of Thunderstorms

Day

82°

Night

54°

Wind

6 mph

UV Index

50

Precipitation

84 %

Air Quality in Lehi

NOW
47 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.79 µg/m³
PM10 11.7 µg/m³
O3 0.051 ppm
NO2 0.6 ppb
SO2 2.2 ppb
CO 0.09 ppm
NH3 0 µg/m³
NO 0.23 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)
PM2.56.79 µg/m³
PM1011.7 µg/m³
O3100.03 µg/m³
NO21.11 µg/m³
SO25.68 µg/m³
CO102 µg/m³
NH30 µg/m³
NO0.23 µg/m³