Today | Weather | Wednesday, October 14, 2026

Weather in Santa Ana, California

03:39 AM
Now
Cloudy Night
57° F
Feels Like 57°
Precipitation 0 %
Wind 5 mph
Humidity 68 %
Today
Sunny Weather
Day 82°
Night 57°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5

Santa Ana Weather Forecast Updated

17 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 14, 2025)
Rainy Night

Day

63°

Night

54°

Wind

4 mph

Precipitation

60 %

Air Quality in Santa Ana

NOW
51 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.87 µg/m³
PM10 21.18 µg/m³
O3 0.054 ppm
NO2 0.6 ppb
SO2 0.5 ppb
CO 0.13 ppm
NH3 0.18 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)
PM2.5 – 7.87 µg/m³
PM10 – 21.18 µg/m³
O3 – 106.46 µg/m³
NO2 – 1.1 µg/m³
SO2 – 1.43 µg/m³
CO – 146.32 µg/m³
NH3 – 0.18 µg/m³
NO – 0 µg/m³