Hourly Weather | Today Tuesday, November 4, 2025
Fort Collins, Colorado
8 AM
Cloudy Weather
34°
Feels Like 34°
0
Humidity: 76%
Wind: 5 mph
UV Index: 1
9 AM
Cloudy Weather
39°
Feels Like 43°
0
Humidity: 62%
Wind: 5 mph
UV Index: 2
10 AM
Cloudy Weather
46°
Feels Like 50°
0
Humidity: 49%
Wind: 5 mph
UV Index: 2
11 AM
Cloudy Weather
54°
Feels Like 59°
0
Humidity: 36%
Wind: 6 mph
UV Index: 3
12 PM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 25%
Wind: 6 mph
UV Index: 3
1 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 17%
Wind: 6 mph
UV Index: 3
2 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 15%
Wind: 7 mph
UV Index: 2
3 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 14%
Wind: 7 mph
UV Index: 2
4 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 16%
Wind: 7 mph
UV Index: 1
5 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 20%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 24%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 27%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 31%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 36%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
50°
Feels Like 46°
0
Humidity: 40%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy Night
48°
Feels Like 45°
0
Humidity: 43%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.05 µg/m³
  • PM10: 2.92 µg/m³
  • O3: 0.033 ppm
  • NO2: 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.

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

Pollutant Concentrations:

  • PM2.5: 2.06 µg/m³
  • PM10: 3.04 µg/m³
  • O3: 0.034 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.

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

Pollutant Concentrations:

  • PM2.5: 2.08 µg/m³
  • PM10: 3.13 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.17 µg/m³
  • PM10: 3.35 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.6 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.26 µg/m³
  • PM10: 4 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.2 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
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.31 µg/m³
  • PM10: 4.25 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.2 ppb
  • SO2: 0 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: 2.35 µg/m³
  • PM10: 4.33 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.46 µg/m³
  • PM10: 4.28 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.5 µg/m³
  • PM10: 4.35 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.6 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.52 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.59 µg/m³
  • PM10: 4.53 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.8 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.65 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.67 µg/m³
  • PM10: 4.67 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.73 µg/m³
  • PM10: 4.74 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.5 ppb
  • SO2: 0 ppb
  • CO: 0.09 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: 2.79 µg/m³
  • PM10: 4.81 µg/m³
  • O3: 0.029 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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