Today | Weather | Thursday, December 4, 2025

Weather in Pomona, California

01:29 AM
Now
Night
54° F
Feels Like 50°
Precipitation 0 %
Wind 7 mph
Humidity 45 %
Today
Cloudy Weather
Day 72°
Night 45°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 3

Pomona Weather Forecast Updated

25 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 4, 2024)
Cloudy Night

Day

64°

Night

43°

Wind

4 mph

Precipitation

0 %

Air Quality in Pomona

NOW
84 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 28.08 µg/m³
PM10 39.11 µg/m³
O3 0.038 ppm
NO2 10.3 ppb
SO2 2.4 ppb
CO 0.26 ppm
NH3 0.51 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.528.08 µg/m³
PM1039.11 µg/m³
O375.35 µg/m³
NO219.47 µg/m³
SO26.17 µg/m³
CO299.15 µg/m³
NH30.51 µg/m³
NO0 µg/m³