Hourly Weather | Today Wednesday, December 24, 2025
Castle Rock, Colorado
1 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 23%
Wind: 8 mph
UV Index: 2
2 PM
Cloudy Weather
68°
Feels Like 68°
0
Humidity: 22%
Wind: 8 mph
UV Index: 2
3 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 24%
Wind: 8 mph
UV Index: 1
4 PM
Cloudy Weather
63°
Feels Like 61°
0
Humidity: 28%
Wind: 7 mph
UV Index: 1
5 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 34%
Wind: 7 mph
UV Index: 0
6 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 39%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
54°
Feels Like 48°
0
Humidity: 43%
Wind: 8 mph
UV Index: 0
8 PM
Cloudy Night
52°
Feels Like 46°
0
Humidity: 47%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy Night
50°
Feels Like 45°
0
Humidity: 50%
Wind: 8 mph
UV Index: 0
10 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 52%
Wind: 9 mph
UV Index: 0
11 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 54%
Wind: 9 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.68 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.07 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.15 µg/m³
  • PM10: 2.8 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.31 µg/m³
  • PM10: 2.94 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.47 µg/m³
  • PM10: 3.08 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.55 µg/m³
  • PM10: 3.14 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.9 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.64 µg/m³
  • PM10: 3.22 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.4 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.74 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.8 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.81 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.88 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.023 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.93 µg/m³
  • PM10: 3.59 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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