Today | Weather | Wednesday, October 28, 2026

Weather in Chico, California

02:43 PM
Now
Cloudy Weather
72° F
Feels Like 72°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 27 %
Today
Cloudy Weather
Day 72°
Night 45°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3

Chico Weather Forecast Updated

37 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 28, 2025)
Night

Day

72°

Night

48°

Wind

5 mph

Precipitation

0 %

Air Quality in Chico

NOW
44 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.36 µg/m³
PM10 2.25 µg/m³
O3 0.047 ppm
NO2 0.5 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0.24 µg/m³
NO 0.12 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 – 1.36 µg/m³
PM10 – 2.25 µg/m³
O3 – 93.23 µg/m³
NO2 – 0.89 µg/m³
SO2 – 0.14 µg/m³
CO – 132.8 µg/m³
NH3 – 0.24 µg/m³
NO – 0.12 µg/m³