Hourly Weather | Today Wednesday, October 22, 2025
Arvada, Colorado
5 AM
Night
39°
Feels Like 39°
0
Humidity: 46%
Wind: 5 mph
UV Index: 0
6 AM
Night
39°
Feels Like 37°
0
Humidity: 51%
Wind: 5 mph
UV Index: 0
7 AM
Night
37°
Feels Like 37°
0
Humidity: 55%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
43°
Feels Like 45°
0
Humidity: 45%
Wind: 4 mph
UV Index: 3
9 AM
Cloudy Weather
48°
Feels Like 52°
0
Humidity: 36%
Wind: 2 mph
UV Index: 13
10 AM
Cloudy Weather
54°
Feels Like 61°
0
Humidity: 28%
Wind: 4 mph
UV Index: 21
11 AM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 22%
Wind: 6 mph
UV Index: 29
12 PM
Cloudy Weather
63°
Feels Like 70°
0
Humidity: 19%
Wind: 6 mph
UV Index: 36
1 PM
Cloudy Weather
66°
Feels Like 72°
0
Humidity: 16%
Wind: 6 mph
UV Index: 38
2 PM
Cloudy Weather
68°
Feels Like 72°
0
Humidity: 15%
Wind: 6 mph
UV Index: 36
3 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 15%
Wind: 6 mph
UV Index: 29
4 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 14%
Wind: 6 mph
UV Index: 21
5 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 16%
Wind: 6 mph
UV Index: 13
6 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 19%
Wind: 6 mph
UV Index: 3
7 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 22%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 24%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 27%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 30%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 34%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.31 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.3 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.3 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.8 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.14 µg/m³
  • PM10: 1.27 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.08 µg/m³
  • PM10: 1.21 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.07 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.6 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 0.92 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.03 µg/m³
  • O3: 0.029 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.73 µg/m³
  • PM10: 0.85 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.75 µg/m³
  • PM10: 0.84 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.040 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.

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

Pollutant Concentrations:

  • PM2.5: 0.96 µg/m³
  • PM10: 1.14 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.29 µg/m³
  • PM10: 1.55 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.57 µg/m³
  • PM10: 1.91 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 2.28 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.14 µg/m³
  • PM10: 2.65 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 2.98 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.5 µg/m³
  • PM10: 3.18 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.62 µg/m³
  • PM10: 3.37 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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