Today | Weather | Thursday, February 26, 2026

Weather in San Bernardino, California

12:39 AM
Now
Cloudy Night
57° F
Feels Like 57°
Precipitation 0 %
Wind 4 mph
Humidity 73 %
Today
Cloudy Weather
Day 88°
Night 55°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5

San Bernardino Weather Forecast Updated

21 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 26, 2025)
Sunny Weather

Day

86°

Night

48°

Wind

6 mph

UV Index

5

Precipitation

0 %

Air Quality in San Bernardino

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

Pollutant Concentrations:

PM2.5 21.54 µg/m³
PM10 30.66 µg/m³
O3 0.039 ppm
NO2 4.2 ppb
SO2 0.8 ppb
CO 0.23 ppm
NH3 0.15 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)
PM2.521.54 µg/m³
PM1030.66 µg/m³
O377.36 µg/m³
NO27.81 µg/m³
SO22.12 µg/m³
CO268.66 µg/m³
NH30.15 µg/m³
NO0 µg/m³