Hourly Weather | Today Tuesday, January 13, 2026
Fort Collins, Colorado
4 PM
Cloudy Weather
61°
Feels Like 55°
0
Humidity: 24%
Wind: 12 mph
UV Index: 0
5 PM
Cloudy Weather
57°
Feels Like 52°
0
Humidity: 26%
Wind: 13 mph
UV Index: 0
6 PM
Cloudy Weather
54°
Feels Like 46°
0
Humidity: 29%
Wind: 13 mph
UV Index: 0
7 PM
Cloudy Weather
52°
Feels Like 43°
0
Humidity: 34%
Wind: 13 mph
UV Index: 0
8 PM
Cloudy Weather
48°
Feels Like 43°
0
Humidity: 39%
Wind: 13 mph
UV Index: 0
9 PM
Cloudy Weather
46°
Feels Like 39°
0
Humidity: 45%
Wind: 12 mph
UV Index: 0
10 PM
Cloudy Weather
45°
Feels Like 37°
0
Humidity: 51%
Wind: 12 mph
UV Index: 0
11 PM
Cloudy Weather
43°
Feels Like 36°
0
Humidity: 56%
Wind: 10 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.01 µg/m³
  • PM10: 1.13 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.15 µg/m³
  • PM10: 1.29 µg/m³
  • O3: 0.038 ppm
  • NO2: 1 ppb
  • SO2: 0.7 ppb
  • CO: 0.08 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: 1.28 µg/m³
  • PM10: 1.45 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 1.66 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.6 µg/m³
  • PM10: 1.86 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.6 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.71 µg/m³
  • PM10: 2.01 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.5 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.78 µg/m³
  • PM10: 2.11 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.5 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.84 µg/m³
  • PM10: 2.19 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.4 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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