Hourly Weather | Today Wednesday, March 18, 2026
Active Weather Warnings
Grand Forks, North Dakota
7 AM
Cloudy Night
16°
Feels Like
8
Frost Risk: 100%
Humidity: 94%
UV Index: 0
Wind: 8 mph
8 AM
Cloudy Weather
19°
Feels Like 12°
0
Frost Risk: 100%
Humidity: 100%
UV Index: 0
Wind: 7 mph
9 AM
Cloudy Weather
21°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 99%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
27°
Feels Like 21°
0
Humidity: 96%
UV Index: 1
Wind: 7 mph
11 AM
Cloudy Weather
30°
Feels Like 27°
0
Humidity: 90%
UV Index: 2
Wind: 7 mph
12 PM
Cloudy Weather
34°
Feels Like 32°
0
Humidity: 81%
UV Index: 2
Wind: 8 mph
1 PM
Cloudy Weather
36°
Feels Like 36°
0
Humidity: 80%
UV Index: 2
Wind: 8 mph
2 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 78%
UV Index: 1
Wind: 7 mph
3 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 75%
UV Index: 1
Wind: 7 mph
4 PM
Cloudy Weather
39°
Feels Like 37°
0
Humidity: 73%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 77%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 81%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Weather
36°
Feels Like 30°
1
Humidity: 86%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Weather
34°
Feels Like 30°
6
Humidity: 89%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
34°
Feels Like 28°
6
Humidity: 92%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
32°
Feels Like 28°
6
Humidity: 93%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
30°
Feels Like 27°
6
Humidity: 90%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.67 µg/m³
  • PM10: 1.81 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.46 µg/m³
  • PM10: 1.61 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 1.48 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 1.47 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 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: 1.64 µg/m³
  • PM10: 1.99 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 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: 2.48 µg/m³
  • PM10: 3.1 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 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: 3.69 µg/m³
  • PM10: 4.64 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.77 µg/m³
  • PM10: 6.06 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.27 µg/m³
  • PM10: 6.75 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.35 µg/m³
  • PM10: 6.93 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.33 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.35 µg/m³
  • PM10: 6.94 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.28 µg/m³
  • PM10: 6.8 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.6 ppb
  • SO2: 0 ppb
  • CO: 0.15 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: 5.36 µg/m³
  • PM10: 6.79 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.2 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
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.97 µg/m³
  • PM10: 7.25 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.2 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
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7 µg/m³
  • PM10: 8.01 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.9 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.03 µg/m³
  • PM10: 8.7 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.5 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Grand Forks

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued March 18 at 5:40AM CDT by NWS Grand Forks ND
Mar 18, 5:40 AM Mar 18, 10:15 AM
Areas of dense fog exists from Cando thru Devils Lake to
Cooperstown and will likely expand farther south and east possibly
into the Fargo and Grand Forks area by sunrise. Visibilities will
vary but will be below one half mile at times. Fog should begin to
lift by 10 am.
Updated: Mar 18, 5:54 AM Source: NWS Alert