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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog

37°F

3°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 30.24 in
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Last update 7 Mar 7:35 am EST
Extended Forecast for

Exton PA

  • Today

    Today: Areas of dense fog before noon. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the morning.

    High: 50 °F

    Areas Dense
    Fog then
    Cloudy

  • Tonight

    Tonight: Showers and thunderstorms likely. Mostly cloudy, with a temperature rising to around 59 by 3am. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F⇑

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 67. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind around 5 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Areas of dense fog before noon. Otherwise, cloudy, with a high near 50. Calm wind becoming south around 5 mph in the morning.
Tonight
Showers and thunderstorms likely. Mostly cloudy, with a temperature rising to around 59 by 3am. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 67. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 40. West wind around 5 mph.
Monday
Sunny, with a high near 68. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
A chance of showers. Cloudy, with a high near 76. Chance of precipitation is 40%.
Wednesday Night
Showers likely. Cloudy, with a low around 46. Breezy. Chance of precipitation is 70%.
Thursday
A chance of showers. Mostly cloudy, with a high near 59. Breezy. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Exton PA
 40.03°N 75.64°W (Elev. 299 ft)
Last Update:
4:09 am EST Mar 7, 2026
Forecast Valid:
7am EST Mar 7, 2026-6pm EDT Mar 13, 2026
 
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