Hourly Weather | Today Tuesday, August 4, 2026
Santa Ana, California
9 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 70%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
72°
Feels Like 72°
0
Humidity: 74%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 76%
UV Index: 0
Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.69 µg/m³
  • PM10: 28.47 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.92 µg/m³
  • PM10: 29.32 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.2 µg/m³
  • PM10: 30.39 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.