Hourly Weather | Today Friday, September 18, 2026
Santa Monica, California
9 PM
Night
72°
Feels Like 70°
0
Humidity: 77%
UV Index: 0
Wind: 6 mph
10 PM
Night
70°
Feels Like 70°
0
Humidity: 80%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
70°
Feels Like 68°
0
Humidity: 82%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.23 µg/m³
  • PM10: 24.86 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

10 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.41 µg/m³
  • PM10: 25.99 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.44 µg/m³
  • PM10: 26.51 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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