Today | Weather | Sunday, December 14, 2025

Active Weather Warnings

Dense Fog Advisory

Weather in Fairfield, California

05:02 AM

Now

37° F

Feels Like 32°

Precipitation 34 %

Wind 6 mph

Humidity 99 %

Today

Day 46°

Night 37°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 2

Fairfield Weather Forecast Updated

Last updated on December 14, 2025 at 3:46 AM

Weather Forecast History

Last Year's Weather on This Day (December 14, 2024)

Day

57°

Night

36°

Wind

6 mph

Precipitation

0 %

Air Quality in Fairfield

NOW

65 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 19.03 µg/m³

PM₁₀ 25.33 µg/m³

O₃ 0.033 ppm

NO₂ 5.1 ppb

SO₂ 0.4 ppb

CO 0.18 ppm

NH₃ 0.08 µg/m³

NO 0 µg/m³

PM_2.5 – 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 19.03 µg/m³

PM₁₀ – 25.33 µg/m³

O₃ – 65.31 µg/m³

NO₂ – 9.56 µg/m³

SO₂ – 0.92 µg/m³

CO – 204.04 µg/m³

NH₃ – 0.08 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Fairfield

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued December 14 at 12:23AM PST until December 14 at 11:00AM PST by NWS Sacramento CA

Dec 14, 12:23 AM → Dec 14, 11:00 AM

WHAT: Visibility one quarter mile or less in dense fog.

WHERE: Carquinez Strait, Delta, and the Sacramento Valley.

WHEN: Until 11 AM PST this morning.

IMPACTS: Low visibility could make driving conditions hazardous.

ADDITIONAL DETAILS: Find the latest road conditions at
quickmap.dot.ca.gov

+ Read More

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Updated: Dec 14, 3:46 AM Source: NWS Alert