Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog/Mist

27°F

-3°C

Humidity 100%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 27°F (-3°C)
Visibility 4.00 mi
Last update 17 Jan 11:55 pm EST
Extended Forecast for

3 Miles NNE Unionville PA

Winter Weather Advisory January 18, 06:00am until January 18, 08:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Overnight

    Overnight: A slight chance of snow before 4am, then a chance of rain between 4am and 5am, then a chance of rain and snow after 5am.  Areas of dense fog before 1am.  Otherwise, cloudy, with a low around 27. Calm wind.  Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance
    Rain/Snow and
    Areas Dense
    Fog

  • Sunday

    Sunday: Snow likely, mainly before 2pm.  Cloudy, with a high near 33. Calm wind becoming northwest around 5 mph in the morning.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 33 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A slight chance of snow before 1am.  Mostly cloudy, then gradually becoming mostly clear, with a low around 17. West wind 5 to 10 mph.  Chance of precipitation is 20%.

    Low: 17 °F

    Slight Chance
    Snow

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of snow before 4am, then a chance of rain between 4am and 5am, then a chance of rain and snow after 5am. Areas of dense fog before 1am. Otherwise, cloudy, with a low around 27. Calm wind. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Snow likely, mainly before 2pm. Cloudy, with a high near 33. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
A slight chance of snow before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 17. West wind 5 to 10 mph. Chance of precipitation is 20%.
M.L.King Day
Sunny, with a high near 34. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 12. West wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Mostly clear, with a low around 8.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 17.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 33.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Unionville PA
 39.93°N 75.71°W (Elev. 295 ft)
8:24 pm EST Jan 17, 2026
12am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
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Additional Resources

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