Today | Weather | Thursday, September 4, 2025

Weather in Fairfield, California

04:42 AM
Now
Cloudy WeatherCloudy weather, overcast skies with no rain.
59° F
Feels Like 54°
Precipitation 0 %
Wind 12 mph
Humidity 84 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 82°
Night 59°
Precipitation 0 %
Wind 13 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.

Other:

Mostly sunny and not as scorching heat.

Fairfield Weather Forecast Updated

56 minutes ago
Last updated on

Air quality in Fairfield

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

Pollutant Concentrations:

PM2.5 11.00 µg/m³
PM10 11.74 µg/m³
O₃ 16.57 ppb
NO₂ 5.08 ppb
SO₂ 0.41 ppb
CO 138.93 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