Hourly Weather | Today Tuesday, July 21, 2026
Grand Junction, Colorado
2 AM
Cloudy Night
75°
Feels Like 73°
20
Humidity: 51%
UV Index: 0
Wind: 7 mph
3 AM
Cloudy Night
75°
Feels Like 72°
20
Humidity: 53%
UV Index: 0
Wind: 7 mph
4 AM
Cloudy Night
73°
Feels Like 72°
20
Humidity: 55%
UV Index: 0
Wind: 7 mph
5 AM
Cloudy Night
72°
Feels Like 70°
20
Humidity: 57%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
70°
Feels Like 68°
20
Humidity: 59%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
73°
Feels Like 73°
15
Humidity: 54%
UV Index: 1
Wind: 6 mph
8 AM
Sunny Weather
79°
Feels Like 79°
5
Humidity: 46%
UV Index: 2
Wind: 7 mph
9 AM
Sunny Weather
82°
Feels Like 84°
5
Humidity: 39%
UV Index: 4
Wind: 7 mph
10 AM
Cloudy Weather
88°
Feels Like 91°
6
Humidity: 32%
UV Index: 5
Wind: 7 mph
11 AM
Cloudy Weather
93°
Feels Like 99°
7
Humidity: 26%
UV Index: 8
Wind: 7 mph
12 PM
Cloudy Weather
97°
Feels Like 104°
7
Humidity: 22%
UV Index: 10
Wind: 7 mph
1 PM
Cloudy Weather
100°
Feels Like 108°
11
Humidity: 18%
UV Index: 11
Wind: 7 mph
2 PM
Cloudy Weather
104°
Feels Like 109°
19
Humidity: 15%
UV Index: 10
Wind: 7 mph
3 PM
Cloudy Weather
108°
Feels Like 111°
19
Humidity: 13%
UV Index: 7
Wind: 7 mph
4 PM
Cloudy Weather
106°
Feels Like 106°
24
Humidity: 13%
UV Index: 4
Wind: 8 mph
5 PM
Cloudy Weather
104°
Feels Like 104°
43
Humidity: 14%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
100°
Feels Like 100°
47
Humidity: 16%
UV Index: 2
Wind: 8 mph
7 PM
Stormy Weather
97°
Feels Like 91°
51
Humidity: 22%
UV Index: 0
Wind: 8 mph
8 PM
Sunny with a Chance of Thunderstorms
93°
Feels Like 88°
51
Humidity: 26%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
90°
Feels Like 88°
47
Humidity: 30%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
88°
Feels Like 84°
40
Humidity: 35%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
84°
Feels Like 81°
34
Humidity: 41%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.43 µg/m³
  • PM10: 1.74 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.43 µg/m³
  • PM10: 1.73 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.45 µg/m³
  • PM10: 1.76 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.49 µg/m³
  • PM10: 1.8 µg/m³
  • O3: 0.029 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.

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

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 1.87 µg/m³
  • O3: 0.029 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.

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

Pollutant Concentrations:

  • PM2.5: 1.61 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.029 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.

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

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 1.96 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.3 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 2.03 µg/m³
  • O3: 0.033 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.

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 2.66 µg/m³
  • O3: 0.043 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.

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

Pollutant Concentrations:

  • PM2.5: 2.09 µg/m³
  • PM10: 2.9 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.31 µg/m³
  • PM10: 3.15 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 2.78 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.05 µg/m³
  • PM10: 2.47 µg/m³
  • O3: 0.045 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
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.02 µg/m³
  • PM10: 2.42 µg/m³
  • O3: 0.045 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
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 2.41 µg/m³
  • O3: 0.045 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
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.99 µg/m³
  • PM10: 2.34 µg/m³
  • O3: 0.044 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
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.88 µg/m³
  • PM10: 2.2 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.02 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 1.9 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.62 µg/m³
  • PM10: 1.85 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 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: 1.6 µg/m³
  • PM10: 1.81 µg/m³
  • O3: 0.034 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 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: 1.57 µg/m³
  • PM10: 1.74 µg/m³
  • O3: 0.031 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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