Today | Weather | Saturday, August 29, 2026

Weather in Fairfield, California

01:14 AM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 0 %
Wind 12 mph
Humidity 82 %
Today
Sunny Weather
Day 84°
Night 55°
Precipitation 1 %
Wind 15 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Fairfield Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 29, 2025)
Night

Day

84°

Night

55°

Wind

10 mph

Precipitation

0 %

Air Quality in Fairfield

NOW
27 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.88 µg/m³
PM10 9.49 µg/m³
O3 0.029 ppm
NO2 0.8 ppb
SO2 0.3 ppb
CO 0.07 ppm
NH3 0.01 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)
PM2.52.88 µg/m³
PM109.49 µg/m³
O356.43 µg/m³
NO21.43 µg/m³
SO20.7 µg/m³
CO83.95 µg/m³
NH30.01 µg/m³
NO0 µg/m³