Today | Weather | Friday, September 18, 2026

Weather in Chino, California

07:54 PM
Now
Night
72° F
Feels Like 70°
Precipitation 0 %
Wind 7 mph
Humidity 70 %
Today
Night
Day 82°
Night 57°
Precipitation 1 %
Wind 5 mph

Chino Weather Forecast Updated

19 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Stormy Weather

Day

84°

Night

66°

Wind

5 mph

Precipitation

55 %

Air Quality in Chino

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.58 µg/m³
PM10 20.33 µg/m³
O3 0.049 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 0 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:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.58 µg/m³
PM1020.33 µg/m³
O396.47 µg/m³
NO20.74 µg/m³
SO20.84 µg/m³
CO153.43 µg/m³
NH30 µg/m³
NO0 µg/m³