Today | Weather | Friday, December 12, 2025

Weather in Fairfield, California

11:18 AM
Now
Cloudy Weather
43° F
Feels Like 39°
Precipitation 20 %
Wind 8 mph
UV Index (0 - 11+) 1
Humidity 99 %
Today
Cloudy Weather
Day 52°
Night 37°
Precipitation 40 %
Wind 7 mph
UV Index (0 - 11+) 2

Fairfield Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 12, 2024)
Rainy Weather

Day

57°

Night

48°

Wind

8 mph

Precipitation

75 %

Air Quality in Fairfield

NOW
101 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 35.61 µg/m³
PM10 44.01 µg/m³
O3 0.026 ppm
NO2 18.3 ppb
SO2 1.9 ppb
CO 0.35 ppm
NH3 0.73 µg/m³
NO 11.12 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.535.61 µg/m³
PM1044.01 µg/m³
O350.42 µg/m³
NO234.45 µg/m³
SO25.03 µg/m³
CO405.44 µg/m³
NH30.73 µg/m³
NO11.12 µg/m³