Hourly Weather | Today Sunday, December 14, 2025
Greeley, Colorado
2 PM
Cloudy Weather
52°
Feels Like 55°
0
Humidity: 35%
Wind: 5 mph
UV Index: 2
3 PM
Cloudy Weather
52°
Feels Like 55°
0
Humidity: 32%
Wind: 5 mph
UV Index: 1
4 PM
Cloudy Weather
48°
Feels Like 48°
0
Humidity: 37%
Wind: 5 mph
UV Index: 1
5 PM
Cloudy Night
43°
Feels Like 41°
0
Humidity: 46%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 55%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 60%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 67%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 71%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
23°
Feels Like 19°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
21°
Feels Like 18°
0
Humidity: 81%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.54 µg/m³
  • PM10: 1.9 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 2.41 µg/m³
  • O3: 0.032 ppm
  • NO2: 3.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.32 µg/m³
  • PM10: 3.1 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.71 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.024 ppm
  • NO2: 8.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 4.01 µg/m³
  • O3: 0.022 ppm
  • NO2: 10 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.52 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.022 ppm
  • NO2: 10.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.62 µg/m³
  • PM10: 4.62 µg/m³
  • O3: 0.023 ppm
  • NO2: 9.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.16 µg/m³
  • PM10: 3.96 µg/m³
  • O3: 0.024 ppm
  • NO2: 7.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.73 µg/m³
  • PM10: 3.39 µg/m³
  • O3: 0.025 ppm
  • NO2: 6.3 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.3 µg/m³
  • PM10: 2.77 µg/m³
  • O3: 0.027 ppm
  • NO2: 5 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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