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.

Overcast

30°F

-1°C

Humidity 100%
Wind Speed Calm
Barometer 30.56 in
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Last update 9 Apr 5:55 am EDT
Extended Forecast for

3 Miles NNE Unionville PA

Freeze Warning April 9, 06:01am until April 9, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning April 9, 06:01am until April 9, 09:00am

    NOW until 9:00am Thu

    Freeze Warning

  • Today

    High: 56 °F

    Frost then
    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Patchy frost after 4am. Otherwise, partly cloudy, with a low around 35. South wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost and
    Patchy Fog

  • Friday

    Friday: Patchy fog between 7am and 8am. Patchy frost before 8am. Otherwise, mostly sunny, with a high near 67. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 67 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. South wind around 5 mph becoming west after midnight.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 56. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Patchy fog after 3am. Patchy frost after 4am. Otherwise, partly cloudy, with a low around 35. South wind around 5 mph becoming calm in the evening.
Friday
Patchy fog between 7am and 8am. Patchy frost before 8am. Otherwise, mostly sunny, with a high near 67. Light south wind increasing to 5 to 10 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 48. South wind around 5 mph becoming west after midnight.
Saturday
Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 50.
Monday
Mostly cloudy, with a high near 78.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Unionville PA
 39.93°N 75.71°W (Elev. 295 ft)
Last Update:
4:24 am EDT Apr 9, 2026
Forecast Valid:
6am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation