Today | Weather | Monday, April 27, 2026

Weather in Chico, California

05:53 PM
Now
Cloudy Weather
66° F
Feels Like 68°
Precipitation 7 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 43 %
Today
Cloudy Weather
Day 68°
Night 48°
Precipitation 25 %
Wind 4 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Chico Weather Forecast Updated

34 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Partly Sunny with Showers

Day

64°

Night

46°

Wind

8 mph

UV Index

6

Precipitation

84 %

Air Quality in Chico

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.15 µg/m³
PM10 3.79 µg/m³
O3 0.043 ppm
NO2 1.1 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 1.12 µg/m³
NO 0.11 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)
PM2.52.15 µg/m³
PM103.79 µg/m³
O383.93 µg/m³
NO22.12 µg/m³
SO20.28 µg/m³
CO135.41 µg/m³
NH31.12 µg/m³
NO0.11 µg/m³