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

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Mostly Cloudy

32°F

0°C

Humidity 100%
Wind Speed NE 3 mph
Barometer 29.93 in
Dewpoint 32°F (0°C)
Visibility 8.00 mi
Last update 18 Feb 4:55 am EST
Extended Forecast for

Thorndale PA

Dense Fog Advisory February 18, 05:04am until February 18, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory February 18, 05:04am until February 18, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Today

    High: 47 °F

    Rain Likely
    and Dense Fog

  • Tonight

    Tonight: A slight chance of rain before 8pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of rain, mainly after 1pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 42. East wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 35. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain

  • Friday

    Friday: Rain, mainly before 1pm. High near 46. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Partly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Today
Rain likely, mainly between 2pm and 5pm. Widespread dense fog before 2pm, then patchy dense fog after 5pm. Otherwise, cloudy, with a high near 47. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A slight chance of rain before 8pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Thursday
A chance of rain, mainly after 1pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 42. East wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain. Low around 35. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 1pm. High near 46. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
Partly sunny, with a high near 48.
Saturday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Sunday
Rain and snow likely, becoming all snow after 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 60%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Monday
A chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thorndale PA
 40°N 75.76°W (Elev. 390 ft)
Last Update:
4:13 am EST Feb 18, 2026
Forecast Valid:
5am EST Feb 18, 2026-6pm EST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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