Hourly Weather | Today Friday, February 6, 2026
Castle Rock, Colorado
2 AM
Night
36°
Feels Like 30°
0
Humidity: 49%
UV Index: 0
Wind: 7 mph
3 AM
Night
36°
Feels Like 30°
0
Humidity: 54%
UV Index: 0
Wind: 7 mph
4 AM
Night
34°
Feels Like 30°
0
Humidity: 57%
UV Index: 0
Wind: 7 mph
5 AM
Night
34°
Feels Like 30°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
6 AM
Night
32°
Feels Like 28°
0
Humidity: 62%
UV Index: 0
Wind: 6 mph
7 AM
Night
37°
Feels Like 36°
0
Humidity: 48%
UV Index: 0
Wind: 6 mph
8 AM
Sunny Weather
37°
Feels Like 39°
0
Humidity: 49%
UV Index: 1
Wind: 6 mph
9 AM
Sunny Weather
43°
Feels Like 46°
0
Humidity: 41%
UV Index: 2
Wind: 6 mph
10 AM
Cloudy Weather
50°
Feels Like 54°
0
Humidity: 33%
UV Index: 3
Wind: 6 mph
11 AM
Cloudy Weather
55°
Feels Like 57°
0
Humidity: 27%
UV Index: 3
Wind: 7 mph
12 PM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 24%
UV Index: 3
Wind: 9 mph
1 PM
Cloudy Weather
61°
Feels Like 57°
0
Humidity: 22%
UV Index: 3
Wind: 14 mph
2 PM
Cloudy Weather
61°
Feels Like 57°
0
Humidity: 21%
UV Index: 3
Wind: 16 mph
3 PM
Cloudy Weather
61°
Feels Like 55°
0
Humidity: 22%
UV Index: 2
Wind: 16 mph
4 PM
Cloudy Weather
57°
Feels Like 52°
0
Humidity: 24%
UV Index: 1
Wind: 15 mph
5 PM
Cloudy Weather
54°
Feels Like 46°
0
Humidity: 28%
UV Index: 0
Wind: 15 mph
6 PM
Cloudy Night
52°
Feels Like 43°
0
Humidity: 31%
UV Index: 0
Wind: 13 mph
7 PM
Cloudy Night
48°
Feels Like 41°
0
Humidity: 35%
UV Index: 0
Wind: 12 mph
8 PM
Cloudy Night
45°
Feels Like 37°
0
Humidity: 39%
UV Index: 0
Wind: 10 mph
9 PM
Cloudy Night
43°
Feels Like 36°
0
Humidity: 43%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Night
43°
Feels Like 36°
0
Humidity: 44%
UV Index: 0
Wind: 10 mph
11 PM
Cloudy Night
41°
Feels Like 34°
0
Humidity: 45%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.98 µg/m³
  • PM10: 2.09 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.18 µg/m³
  • PM10: 2.28 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.1 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 2.49 µg/m³
  • O3: 0.029 ppm
  • NO2: 2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.64 µg/m³
  • PM10: 2.74 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.87 µg/m³
  • PM10: 2.97 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 3.17 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 3.31 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 3.2 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

10 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.69 µg/m³
  • PM10: 2.79 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.53 µg/m³
  • PM10: 2.63 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

12 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.08 µg/m³
  • PM10: 1.17 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

1 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.04 µg/m³
  • PM10: 1.16 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

2 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.14 µg/m³
  • PM10: 1.32 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

3 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.29 µg/m³
  • PM10: 1.52 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

4 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.47 µg/m³
  • PM10: 1.74 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

5 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.63 µg/m³
  • PM10: 1.94 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

6 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 2.15 µg/m³
  • O3: 0.033 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.91 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 2.45 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.58 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.36 µg/m³
  • PM10: 2.71 µg/m³
  • O3: 0.028 ppm
  • NO2: 2.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.52 µg/m³
  • PM10: 2.82 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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