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.

Overcast

32°F

0°C

Humidity 100%
Wind Speed NE 10 mph
Barometer 29.99 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 16 Feb 4:55 am EST
Extended Forecast for

3 Miles NNE Unionville PA

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 41. Northeast wind 5 to 10 mph.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Calm wind becoming southwest around 5 mph after midnight.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 49. West wind around 5 mph.

    High: 49 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 51. Light and variable wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 40%.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 1am. Partly cloudy, with a low around 40. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Rain likely, mainly before 1pm. Cloudy, with a high near 45. Chance of precipitation is 70%.

    High: 45 °F

    Rain Likely

Detailed Forecast

Washington's Birthday
Mostly cloudy, with a high near 41. Northeast wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 29. Calm wind becoming southwest around 5 mph after midnight.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 49. West wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 35. Calm wind.
Wednesday
A chance of rain. Mostly cloudy, with a high near 51. Light and variable wind becoming south 5 to 10 mph in the morning. Chance of precipitation is 40%.
Wednesday Night
A slight chance of rain before 1am. Partly cloudy, with a low around 40. Chance of precipitation is 20%.
Thursday
Mostly cloudy, with a high near 50.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Friday
Rain likely, mainly before 1pm. Cloudy, with a high near 45. Chance of precipitation is 70%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 40%.
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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:
4:14 am EST Feb 16, 2026
Forecast Valid:
5am EST Feb 16, 2026-6pm EST Feb 22, 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