Hourly Weather | Today › Friday, October 9, 2026
Fort Collins, Colorado
10 AM
Sunny Weather
63°
Feels Like 68°
0
Humidity: 43%
UV Index: 2
Wind: 5 mph
11 AM
Sunny Weather
70°
Feels Like 73°
0
Humidity: 31%
UV Index: 3
Wind: 6 mph
12 PM
Sunny Weather
77°
Feels Like 81°
0
Humidity: 23%
UV Index: 4
Wind: 7 mph
1 PM
Sunny Weather
84°
Feels Like 88°
0
Humidity: 17%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
88°
Feels Like 90°
0
Humidity: 14%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
90°
Feels Like 90°
0
Humidity: 13%
UV Index: 3
Wind: 8 mph
4 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 13%
UV Index: 2
Wind: 8 mph
5 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 14%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 16%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Night
77°
Feels Like 73°
0
Humidity: 19%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 22%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 25%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 28%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 32%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 2.11 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.81 µg/m³
  • PM10: 2.05 µg/m³
  • O3: 0.037 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.

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 2.09 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.06 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: 1.64 µg/m³
  • PM10: 2 µg/m³
  • O3: 0.041 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 1.94 µg/m³
  • O3: 0.041 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.53 µg/m³
  • PM10: 1.93 µg/m³
  • O3: 0.041 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.

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

Pollutant Concentrations:

  • PM2.5: 1.58 µg/m³
  • PM10: 1.99 µg/m³
  • O3: 0.041 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.

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

Pollutant Concentrations:

  • PM2.5: 1.68 µg/m³
  • PM10: 2.12 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.3 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
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.77 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.4 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
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.84 µg/m³
  • PM10: 2.35 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 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: 1.94 µg/m³
  • PM10: 2.49 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.5 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
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.6 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.05 µg/m³
  • PM10: 2.61 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.07 µg/m³
  • PM10: 2.62 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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