Hourly Weather | Today Monday, September 14, 2026
Santa Clarita, California
4 PM
Sunny Weather
90°
Feels Like 90°
0
Humidity: 34%
UV Index: 4
Wind: 9 mph
5 PM
Sunny Weather
88°
Feels Like 86°
0
Humidity: 39%
UV Index: 2
Wind: 9 mph
6 PM
Sunny Weather
84°
Feels Like 82°
0
Humidity: 43%
UV Index: 1
Wind: 8 mph
7 PM
Sunny Weather
81°
Feels Like 79°
0
Humidity: 50%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
77°
Feels Like 75°
0
Humidity: 57%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 65%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 73%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 82%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.27 µg/m³
  • PM10: 27.3 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.04 µg/m³
  • PM10: 27.38 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.54 µg/m³
  • PM10: 26.79 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.07 µg/m³
  • PM10: 26.76 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.73 µg/m³
  • PM10: 26.98 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.57 µg/m³
  • PM10: 27.19 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 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: 8.5 µg/m³
  • PM10: 27.34 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.36 µg/m³
  • PM10: 26.94 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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