Today | Weather | Wednesday, February 25, 2026

Weather in San Bernardino, California

11:49 PM
Now
Cloudy Night
59° F
Feels Like 61°
Precipitation 0 %
Wind 4 mph
Humidity 69 %
Today
Cloudy Weather
Day 86°
Night 55°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5

San Bernardino Weather Forecast Updated

58 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Sunny Weather

Day

84°

Night

48°

Wind

4 mph

UV Index

5

Precipitation

0 %

Air Quality in San Bernardino

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

Pollutant Concentrations:

PM2.5 16.72 µg/m³
PM10 25.13 µg/m³
O3 0.040 ppm
NO2 3.7 ppb
SO2 0.7 ppb
CO 0.21 ppm
NH3 0.16 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)
PM2.516.72 µg/m³
PM1025.13 µg/m³
O379.33 µg/m³
NO26.91 µg/m³
SO21.84 µg/m³
CO236.39 µg/m³
NH30.16 µg/m³
NO0 µg/m³