Hourly Weather | Today Thursday, September 11, 2025
Simi Valley, California
7 AM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 96%
Wind: 5 mph
UV Index: 2
8 AM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 91%
Wind: 5 mph
UV Index: 4
9 AM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 81%
Wind: 5 mph
UV Index: 10
10 AM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 70%
Wind: 6 mph
UV Index: 19
11 AM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 62%
Wind: 6 mph
UV Index: 31
12 PM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 55%
Wind: 7 mph
UV Index: 67
1 PM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 50%
Wind: 7 mph
UV Index: 75
2 PM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 46%
Wind: 8 mph
UV Index: 67
3 PM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 48%
Wind: 9 mph
UV Index: 49
4 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 52%
Wind: 9 mph
UV Index: 36
5 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 56%
Wind: 9 mph
UV Index: 23
6 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 60%
Wind: 8 mph
UV Index: 12
7 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 66%
Wind: 7 mph
UV Index: 2
8 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 73%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 80%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 88%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 88%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.40 µg/m³
  • PM10: 10.61 µg/m³
  • O₃: 15.88 ppb
  • NO₂: 8.36 ppb
  • SO₂: 2.08 ppb
  • CO: 135.61 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

8 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.01 µg/m³
  • PM10: 12.02 µg/m³
  • O₃: 17.70 ppb
  • NO₂: 7.73 ppb
  • SO₂: 2.39 ppb
  • CO: 140.74 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

9 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 11.59 µg/m³
  • O₃: 22.26 ppb
  • NO₂: 6.14 ppb
  • SO₂: 2.23 ppb
  • CO: 127.33 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

10 AM
39 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 11.84 µg/m³
  • O₃: 26.82 ppb
  • NO₂: 4.55 ppb
  • SO₂: 2.06 ppb
  • CO: 113.92 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

11 AM
38 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.13 µg/m³
  • PM10: 11.61 µg/m³
  • O₃: 31.37 ppb
  • NO₂: 2.96 ppb
  • SO₂: 1.90 ppb
  • CO: 100.51 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

12 PM
37 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.96 µg/m³
  • PM10: 10.75 µg/m³
  • O₃: 33.97 ppb
  • NO₂: 2.42 ppb
  • SO₂: 1.63 ppb
  • CO: 99.79 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

1 PM
35 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.11 µg/m³
  • PM10: 10.13 µg/m³
  • O₃: 36.57 ppb
  • NO₂: 1.88 ppb
  • SO₂: 1.37 ppb
  • CO: 99.08 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

2 PM
35 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.25 µg/m³
  • PM10: 9.74 µg/m³
  • O₃: 39.16 ppb
  • NO₂: 1.35 ppb
  • SO₂: 1.10 ppb
  • CO: 98.36 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

3 PM
34 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.92 µg/m³
  • PM10: 9.02 µg/m³
  • O₃: 39.79 ppb
  • NO₂: 1.17 ppb
  • SO₂: 0.83 ppb
  • CO: 98.61 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 PM
34 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 7.88 µg/m³
  • O₃: 40.43 ppb
  • NO₂: 1.00 ppb
  • SO₂: 0.55 ppb
  • CO: 98.86 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 PM
33 AQI
Good air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 4.25 µg/m³
  • PM10: 6.66 µg/m³
  • O₃: 41.06 ppb
  • NO₂: 0.82 ppb
  • SO₂: 0.28 ppb
  • CO: 99.10 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors