Today | Weather | Wednesday, October 28, 2026

Weather in Fairfield, California

11:30 AM
Now
Cloudy Weather
63° F
Feels Like 66°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3
Humidity 43 %
Today
Cloudy Weather
Day 73°
Night 45°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Fairfield Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 28, 2025)
Night

Day

75°

Night

46°

Wind

5 mph

Precipitation

0 %

Air Quality in Fairfield

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.97 µg/m³
PM10 8.6 µg/m³
O3 0.031 ppm
NO2 5.8 ppb
SO2 0.8 ppb
CO 0.17 ppm
NH3 0.23 µg/m³
NO 2.06 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)
PM2.5 – 3.97 µg/m³
PM10 – 8.6 µg/m³
O3 – 61.43 µg/m³
NO2 – 10.93 µg/m³
SO2 – 2 µg/m³
CO – 199.05 µg/m³
NH3 – 0.23 µg/m³
NO – 2.06 µg/m³