Today | Weather | Monday, September 14, 2026

Weather in Santa Ana, California

03:33 PM
Now
Cloudy Weather
82° F
Feels Like 84°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 4
Humidity 57 %
Today
Cloudy Weather
Day 84°
Night 66°
Precipitation 25 %
Wind 6 mph
UV Index (0 - 11+) 7

Santa Ana Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 14, 2025)
Cloudy Weather

Day

82°

Night

61°

Wind

5 mph

UV Index

70

Precipitation

0 %

Air Quality in Santa Ana

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.9 µg/m³
PM10 24.56 µg/m³
O3 0.049 ppm
NO2 0.2 ppb
SO2 0.3 ppb
CO 0.16 ppm
NH3 0 µg/m³
NO 0.04 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)
PM2.57.9 µg/m³
PM1024.56 µg/m³
O397.15 µg/m³
NO20.36 µg/m³
SO20.86 µg/m³
CO180.89 µg/m³
NH30 µg/m³
NO0.04 µg/m³