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.

38°F

3°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 30.47 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Oct 3:55 am EDT
Extended Forecast for

Atglen PA

Frost Advisory October 19, 04:12am until October 19, 09:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory October 19, 04:12am until October 19, 09:00am

    NOW until 9:00am Mon

    Frost Advisory

  • Today

    High: 63 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. North wind 5 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. North wind 10 to 15 mph.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. North wind 5 to 10 mph.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62. North wind around 10 mph.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

Detailed Forecast

Today
Widespread frost before 10am. Otherwise, sunny, with a high near 63. North wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 43. North wind 5 to 10 mph.
Tuesday
Sunny, with a high near 66. North wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 42. North wind 5 to 10 mph.
Wednesday
Sunny, with a high near 62. North wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 64.
Thursday Night
Clear, with a low around 42.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Atglen PA
 39.94°N 75.97°W (Elev. 577 ft)
Last Update:
4:08 am EDT Oct 19, 2026
Forecast Valid:
4am EDT Oct 19, 2026-6pm EDT Oct 25, 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