Hourly Weather | Today Sunday, December 14, 2025
Westminster, Colorado
2 PM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 16%
Wind: 4 mph
UV Index: 2
3 PM
Cloudy Weather
59°
Feels Like 63°
0
Humidity: 17%
Wind: 4 mph
UV Index: 1
4 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 21%
Wind: 5 mph
UV Index: 1
5 PM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 25%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
50°
Feels Like 46°
0
Humidity: 28%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
46°
Feels Like 43°
0
Humidity: 32%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Night
45°
Feels Like 39°
0
Humidity: 35%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
43°
Feels Like 39°
0
Humidity: 34%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
43°
Feels Like 37°
0
Humidity: 32%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy Night
43°
Feels Like 37°
0
Humidity: 31%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.88 µg/m³
  • PM10: 0.95 µg/m³
  • O3: 0.035 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.03 µg/m³
  • PM10: 1.1 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.6 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 1.34 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.4 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.51 µg/m³
  • PM10: 1.6 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.72 µg/m³
  • PM10: 1.82 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 1.96 µg/m³
  • O3: 0.028 ppm
  • NO2: 3.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 1.88 µg/m³
  • O3: 0.027 ppm
  • NO2: 3.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 1.84 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 1.79 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.7 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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