Hourly Weather | Today Wednesday, March 18, 2026
St. Cloud, Minnesota
6 AM
Cloudy Night
18°
Feels Like
20
Frost Risk: 100%
Humidity: 99%
UV Index: 0
Wind: 15 mph
7 AM
Cloudy Weather
18°
Feels Like
13
Frost Risk: 100%
Humidity: 100%
UV Index: 0
Wind: 13 mph
8 AM
Cloudy Weather
16°
Feels Like 16°
0
Frost Risk: 100%
Humidity: 100%
UV Index: 0
Wind: 5 mph
9 AM
Cloudy Weather
19°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 89%
UV Index: 1
Wind: 5 mph
10 AM
Cloudy Weather
23°
Feels Like 23°
0
Humidity: 78%
UV Index: 1
Wind: 6 mph
11 AM
Cloudy Weather
28°
Feels Like 28°
0
Humidity: 91%
UV Index: 2
Wind: 6 mph
12 PM
Cloudy Weather
32°
Feels Like 34°
0
Humidity: 87%
UV Index: 3
Wind: 7 mph
1 PM
Cloudy Weather
36°
Feels Like 37°
0
Humidity: 86%
UV Index: 3
Wind: 7 mph
2 PM
Cloudy Weather
37°
Feels Like 39°
0
Humidity: 84%
UV Index: 3
Wind: 7 mph
3 PM
Cloudy Weather
39°
Feels Like 39°
0
Humidity: 82%
UV Index: 2
Wind: 7 mph
4 PM
Cloudy Weather
41°
Feels Like 39°
0
Humidity: 80%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
39°
Feels Like 37°
0
Humidity: 86%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 92%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 93%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Weather
36°
Feels Like 36°
0
Humidity: 93%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Weather
34°
Feels Like 34°
0
Humidity: 99%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
32°
Feels Like 30°
0
Humidity: 100%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
30°
Feels Like 30°
0
Frost Risk: 54%
Humidity: 100%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.65 µg/m³
  • PM10: 7.81 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

7 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.32 µg/m³
  • PM10: 8.56 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.75 µg/m³
  • PM10: 9.05 µg/m³
  • O3: 0.037 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

9 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.84 µg/m³
  • PM10: 9.16 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.8 µg/m³
  • PM10: 9.1 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

11 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.4 µg/m³
  • PM10: 9.7 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.2 ppb
  • SO2: 0 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

12 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.11 µg/m³
  • PM10: 11.42 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

1 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.12 µg/m³
  • PM10: 14.42 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.3 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.95 µg/m³
  • PM10: 17.25 µg/m³
  • O3: 0.050 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.04 µg/m³
  • PM10: 18.35 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 16.89 µg/m³
  • PM10: 18.25 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
69 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 15.95 µg/m³
  • PM10: 17.39 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 14.31 µg/m³
  • PM10: 15.84 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 12.32 µg/m³
  • PM10: 13.96 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.8 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 10.43 µg/m³
  • PM10: 12.14 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.1 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.73 µg/m³
  • PM10: 10.43 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.1 µg/m³
  • PM10: 8.7 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.1 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.72 µg/m³
  • PM10: 7.16 µg/m³
  • O3: 0.043 ppm
  • NO2: 2 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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