Today | Weather | Friday, November 21, 2025

Weather in Fairfield, California

05:26 PM
Now
Night
61° F
Feels Like 61°
Precipitation 0 %
Wind 5 mph
Humidity 65 %
Today
Sunny Weather
Day 63°
Night 39°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 3

Fairfield Weather Forecast Updated

36 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 21, 2024)
Rainy Weather

Day

63°

Night

59°

Wind

9 mph

Precipitation

84 %

Air Quality in Fairfield

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.72 µg/m³
PM10 7.66 µg/m³
O3 0.035 ppm
NO2 5.2 ppb
SO2 0.6 ppb
CO 0.14 ppm
NH3 0.2 µg/m³
NO 0.14 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)
PM2.54.72 µg/m³
PM107.66 µg/m³
O368.86 µg/m³
NO29.81 µg/m³
SO21.47 µg/m³
CO160.94 µg/m³
NH30.2 µg/m³
NO0.14 µg/m³