Hourly Weather | Today › Friday, October 9, 2026
Arvada, Colorado
9 AM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 48%
UV Index: 2
Wind: 6 mph
10 AM
Sunny Weather
63°
Feels Like 66°
0
Humidity: 39%
UV Index: 3
Wind: 6 mph
11 AM
Sunny Weather
68°
Feels Like 72°
0
Humidity: 31%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 23%
UV Index: 4
Wind: 6 mph
1 PM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 18%
UV Index: 5
Wind: 7 mph
2 PM
Cloudy Weather
86°
Feels Like 90°
0
Humidity: 14%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
88°
Feels Like 90°
0
Humidity: 13%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
86°
Feels Like 86°
0
Humidity: 13%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
84°
Feels Like 82°
0
Humidity: 15%
UV Index: 2
Wind: 8 mph
6 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 18%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Night
77°
Feels Like 73°
0
Humidity: 22%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 26%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
72°
Feels Like 68°
0
Humidity: 31%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 34%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 34%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.49 µg/m³
  • PM10: 2.68 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.01 µg/m³
  • PM10: 2.21 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2 µg/m³
  • PM10: 2.19 µg/m³
  • O3: 0.036 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.

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

Pollutant Concentrations:

  • PM2.5: 2.06 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.71 µg/m³
  • PM10: 2.11 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 1.97 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.54 µg/m³
  • PM10: 1.96 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.6 µg/m³
  • PM10: 2.04 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.72 µg/m³
  • PM10: 2.19 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.8 µg/m³
  • PM10: 2.3 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.83 µg/m³
  • PM10: 2.31 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.89 µg/m³
  • PM10: 2.34 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.95 µg/m³
  • PM10: 2.38 µg/m³
  • O3: 0.036 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 2.37 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.95 µg/m³
  • PM10: 2.38 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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