Today | Weather | Thursday, October 8, 2026
Active Weather Warnings

Weather in Chico, California

07:39 AM
Now
Sunny Weather
70° F
Feels Like 70°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 1
Humidity 45 %
Today
Hot Day
Day 100°
Night 66°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 4

Chico Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 8, 2025)
Cloudy Night

Day

82°

Night

59°

Wind

13 mph

Precipitation

9 %

Air Quality in Chico

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

Pollutant Concentrations:

PM2.5 8.21 µg/m³
PM10 13.59 µg/m³
O3 0.026 ppm
NO2 4.7 ppb
SO2 0.2 ppb
CO 0.15 ppm
NH3 2.15 µg/m³
NO 0.05 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)
PM2.5 – 8.21 µg/m³
PM10 – 13.59 µg/m³
O3 – 51.01 µg/m³
NO2 – 8.93 µg/m³
SO2 – 0.51 µg/m³
CO – 176.05 µg/m³
NH3 – 2.15 µg/m³
NO – 0.05 µg/m³

Weather Alerts and Warnings for Chico

Moderate Expected Likely

Heat Advisory

Heat Advisory issued October 7 at 8:51AM PDT until October 8 at 10:00PM PDT by NWS Sacramento CA
Oct 7, 8:51 AM → Oct 8, 10:00 PM
WHAT: High temperatures of 92 to 101 degrees expected and
overnight low temperatures in the mid 60s to low 70s, with
widespread Moderate HeatRisk and areas of Major HeatRisk.

WHERE: The Sacramento and northern San Joaquin Valleys, Delta and
Carquinez Strait, and foothills.

WHEN: Until 10 PM PDT Thursday.

IMPACTS: Hot temperatures may cause heat illnesses, especially to
anyone without effective cooling and/or adequate hydration.

ADDITIONAL DETAILS: Hottest days expected Today and Thursday.
Temperatures begin a cooling trend on Friday, with Moderate
HeatRisk in the foothill thermal belts and in Sacramento; Minor
HeatRisk elsewhere.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Oct 8, 6:05 AM Source: NWS Alert