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Today | Weather | Monday, September 1, 2025
Heat Advisory (Issued when high temperatures and humidity create conditions that may be hazardous during outdoor activity or prolonged exposure.)

Weather in Fairfield, California

08:02 AM
Now
Sunny WeatherSunny weather, clear skies and sunny weather.
63° F
Feels Like 63°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 11
Humidity 79 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 102°
Night 63°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Fairfield Weather Forecast Updated

50 minutes ago
Last updated on

Air quality in Fairfield

NOW
44 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.57 µg/m³
PM10 10.05 µg/m³
O₃ 13.64 ppb
NO₂ 7.68 ppb
SO₂ 0.68 ppb
CO 191.09 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast