Today | Weather | Sunday, July 19, 2026

Weather in Fairfield, California

10:30 PM
Now
Cloudy Night
68° F
Feels Like 64°
Precipitation 0 %
Wind 15 mph
Humidity 63 %
Today
Cloudy Night
Day 84°
Night 61°
Precipitation 0 %
Wind 15 mph

Fairfield Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 19, 2025)
Cloudy Night

Day

81°

Night

55°

Wind

15 mph

Precipitation

0 %

Air Quality in Fairfield

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.3 µg/m³
PM10 15.55 µg/m³
O3 0.032 ppm
NO2 1.2 ppb
SO2 0.3 ppb
CO 0.08 ppm
NH3 0.04 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)
PM2.55.3 µg/m³
PM1015.55 µg/m³
O362.11 µg/m³
NO22.34 µg/m³
SO20.76 µg/m³
CO96.18 µg/m³
NH30.04 µg/m³
NO0 µg/m³