Today | Weather | Wednesday, February 25, 2026

Weather in Fairfield, California

11:46 PM
Now
Cloudy Night
55° F
Feels Like 54°
Precipitation 0 %
Wind 6 mph
Humidity 91 %
Today
Cloudy Weather
Day 73°
Night 48°
Precipitation 3 %
Wind 7 mph
UV Index (0 - 11+) 4

Fairfield Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Sunny Weather

Day

70°

Night

34°

Wind

7 mph

UV Index

4

Precipitation

0 %

Air Quality in Fairfield

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.57 µg/m³
PM10 7.64 µg/m³
O3 0.024 ppm
NO2 3.5 ppb
SO2 0.3 ppb
CO 0.14 ppm
NH3 0.07 µg/m³
NO 0 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)
PM2.54.57 µg/m³
PM107.64 µg/m³
O348.01 µg/m³
NO26.66 µg/m³
SO20.75 µg/m³
CO160.77 µg/m³
NH30.07 µg/m³
NO0 µg/m³