Today | Weather | Monday, September 21, 2026

Weather in Layton, Utah

11:52 AM
Now
Cloudy Weather
70° F
Feels Like 75°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5
Humidity 39 %
Today
Cloudy Weather
Day 79°
Night 57°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 5

Layton Weather Forecast Updated

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

Day

81°

Night

55°

Wind

7 mph

UV Index

50

Precipitation

55 %

Air Quality in Layton

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.85 µg/m³
PM10 9.72 µg/m³
O3 0.039 ppm
NO2 1.1 ppb
SO2 0.2 ppb
CO 0.12 ppm
NH3 0.58 µg/m³
NO 0.65 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)
PM2.54.85 µg/m³
PM109.72 µg/m³
O375.62 µg/m³
NO22.02 µg/m³
SO20.53 µg/m³
CO131.83 µg/m³
NH30.58 µg/m³
NO0.65 µg/m³