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Today | Weather | Sunday, December 14, 2025
Active Weather Warnings

Weather in Chico, California

05:10 AM
Now
Foggy Weather
37° F
Feels Like 34°
Precipitation 0 %
Wind 5 mph
Humidity 99 %
Today
Cloudy Weather
Day 48°
Night 39°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 2

Chico Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Rainy Night

Day

52°

Night

41°

Wind

8 mph

Precipitation

60 %

Air Quality in Chico

NOW
106 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 37.6 µg/m³
PM10 41.51 µg/m³
O3 0.017 ppm
NO2 8.5 ppb
SO2 0.3 ppb
CO 0.32 ppm
NH3 1.7 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 37.6 µg/m³
PM10 – 41.51 µg/m³
O3 – 32.93 µg/m³
NO2 – 15.97 µg/m³
SO2 – 0.69 µg/m³
CO – 365.42 µg/m³
NH3 – 1.7 µg/m³
NO – 0 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Chico

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, 3:35 AM Source: NWS Alert