Hourly Weather | Today Saturday, August 29, 2026
Westminster, Colorado
3 AM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 52%
UV Index: 0
Wind: 7 mph
4 AM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 51%
UV Index: 0
Wind: 7 mph
5 AM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 51%
UV Index: 0
Wind: 7 mph
6 AM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 51%
UV Index: 0
Wind: 7 mph
7 AM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 48%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 41%
UV Index: 2
Wind: 6 mph
9 AM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 37%
UV Index: 3
Wind: 6 mph
10 AM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 30%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
86°
Feels Like 90°
1
Humidity: 26%
UV Index: 5
Wind: 7 mph
12 PM
Cloudy Weather
88°
Feels Like 93°
1
Humidity: 23%
UV Index: 6
Wind: 7 mph
1 PM
Cloudy Weather
90°
Feels Like 93°
4
Humidity: 23%
UV Index: 6
Wind: 7 mph
2 PM
Cloudy Weather
90°
Feels Like 93°
13
Humidity: 22%
UV Index: 5
Wind: 7 mph
3 PM
Cloudy Weather
88°
Feels Like 90°
13
Humidity: 24%
UV Index: 4
Wind: 8 mph
4 PM
Cloudy Weather
88°
Feels Like 88°
17
Humidity: 25%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
88°
Feels Like 86°
47
Humidity: 27%
UV Index: 2
Wind: 8 mph
6 PM
Sunny with a Chance of Thunderstorms
84°
Feels Like 79°
51
Humidity: 32%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
81°
Feels Like 79°
47
Humidity: 37%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
79°
Feels Like 75°
34
Humidity: 41%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
75°
Feels Like 73°
34
Humidity: 47%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
73°
Feels Like 70°
40
Humidity: 53%
UV Index: 0
Wind: 7 mph
11 PM
Stormy Weather
72°
Feels Like 64°
51
Humidity: 63%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.93 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.5 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.97 µg/m³
  • PM10: 3.49 µg/m³
  • O3: 0.018 ppm
  • NO2: 1.4 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 3.61 µg/m³
  • O3: 0.018 ppm
  • NO2: 1.4 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.08 µg/m³
  • PM10: 3.7 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.3 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.09 µg/m³
  • PM10: 3.72 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.5 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.09 µg/m³
  • PM10: 3.71 µg/m³
  • O3: 0.015 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.11 µg/m³
  • PM10: 3.75 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.4 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 5.21 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.34 µg/m³
  • PM10: 5.63 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 5.7 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.23 µg/m³
  • PM10: 5.03 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2 µg/m³
  • PM10: 3.75 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.8 µg/m³
  • PM10: 2.87 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 2.5 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 2.39 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.34 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.8 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.06 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: 1.84 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.07 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: 1.78 µg/m³
  • PM10: 2.19 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.66 µg/m³
  • PM10: 2.03 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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