Today | Weather | Thursday, January 1, 2026

Weather in Fairfield, California

02:01 PM
Now
Cloudy Weather
55° F
Feels Like 55°
Precipitation 49 %
Wind 7 mph
UV Index (0 - 11+) 0
Humidity 89 %
Today
Rainy Weather
Day 57°
Night 48°
Precipitation 98 %
Wind 7 mph
UV Index (0 - 11+) 0

Fairfield Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 1, 2025)
Rainy Weather

Day

54°

Night

45°

Wind

2 mph

UV Index

1

Precipitation

65 %

Air Quality in Fairfield

NOW
43 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.27 µg/m³
PM10 3.89 µg/m³
O3 0.046 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0 µg/m³
NO 0.01 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)
PM2.52.27 µg/m³
PM103.89 µg/m³
O391.22 µg/m³
NO20.58 µg/m³
SO20.22 µg/m³
CO132.07 µg/m³
NH30 µg/m³
NO0.01 µg/m³