Hourly Weather | Today Wednesday, December 24, 2025
Fort Collins, Colorado
12 PM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 24%
Wind: 5 mph
UV Index: 2
1 PM
Cloudy Weather
64°
Feels Like 68°
0
Humidity: 22%
Wind: 6 mph
UV Index: 2
2 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 23%
Wind: 6 mph
UV Index: 2
3 PM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 23%
Wind: 5 mph
UV Index: 1
4 PM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 25%
Wind: 4 mph
UV Index: 0
5 PM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 28%
Wind: 4 mph
UV Index: 0
6 PM
Cloudy Weather
55°
Feels Like 54°
0
Humidity: 32%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 37%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 42%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
46°
Feels Like 45°
0
Humidity: 47%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
46°
Feels Like 43°
0
Humidity: 52%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy Night
45°
Feels Like 39°
0
Humidity: 57%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.71 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.84 µg/m³
  • PM10: 2.54 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.98 µg/m³
  • PM10: 2.76 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.16 µg/m³
  • PM10: 3.02 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 3.25 µg/m³
  • O3: 0.026 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.

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

Pollutant Concentrations:

  • PM2.5: 2.47 µg/m³
  • PM10: 3.41 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.7 ppb
  • SO2: 0 ppb
  • CO: 0.11 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: 2.56 µg/m³
  • PM10: 3.5 µg/m³
  • O3: 0.022 ppm
  • NO2: 4.5 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 3.63 µg/m³
  • O3: 0.021 ppm
  • NO2: 4.8 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.8 µg/m³
  • PM10: 3.7 µg/m³
  • O3: 0.020 ppm
  • NO2: 4.5 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 3.62 µg/m³
  • O3: 0.021 ppm
  • NO2: 4 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.83 µg/m³
  • PM10: 3.57 µg/m³
  • O3: 0.022 ppm
  • NO2: 3.4 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 3.49 µg/m³
  • O3: 0.023 ppm
  • NO2: 3 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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