Today | Weather | Sunday, March 15, 2026

Weather in Fairfield, California

12:55 PM
Now
Cloudy Weather
79° F
Feels Like 81°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 5
Humidity 29 %
Today
Cloudy Weather
Day 86°
Night 45°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 5

Fairfield Weather Forecast Updated

51 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Cloudy Weather

Day

59°

Night

45°

Wind

9 mph

UV Index

3

Precipitation

25 %

Air Quality in Fairfield

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.91 µg/m³
PM10 8.05 µg/m³
O3 0.040 ppm
NO2 2.9 ppb
SO2 0.4 ppb
CO 0.14 ppm
NH3 0.26 µg/m³
NO 1.87 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)
PM2.53.91 µg/m³
PM108.05 µg/m³
O377.58 µg/m³
NO25.38 µg/m³
SO20.92 µg/m³
CO165.56 µg/m³
NH30.26 µg/m³
NO1.87 µg/m³