National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Danville, Vermilion County Airport (KDNV)

Lat: 40.2°NLon: 87.6°WElev: 696ft.

Overcast

68°F

20°C

Humidity 98%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 67°F (19°C)
Visibility NA
Last update 14 Jul 12:15 am CDT
Extended Forecast for

Potomac IL

Dense Fog Advisory until July 14, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until July 14, 10:00am

    NOW until 10:00am Mon

    Dense Fog Advisory

  • Overnight

    Low: 66 °F

    Patchy Dense
    Fog

  • Monday

    Monday: Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Areas Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light south wind.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 3 to 7 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southwest wind around 6 mph.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Monday
Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 86. Calm wind.
Monday Night
Partly cloudy, with a low around 68. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light south wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 3 to 7 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. South southwest wind around 6 mph.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 66.
Saturday
A chance of showers. Partly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac IL
 40.3°N 87.79°W (Elev. 673 ft)
Last Update:
12:26 am CDT Jul 14, 2025
Forecast Valid:
12am CDT Jul 14, 2025-6pm CDT Jul 20, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation