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

43°F

6°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 43°F (6°C)
Visibility 0.25 mi
Last update 4 Mar 9:55 pm EST
Extended Forecast for

2 Miles WSW Unionville PA

  • Tonight

    Tonight: Rain, mainly after 4am. Patchy fog. Low around 42. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Rain and
    Patchy Fog

  • Thursday

    Thursday: Rain, mainly before noon. Areas of fog before noon. High near 51. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain and
    Areas Fog
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 39. Northeast wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: A slight chance of showers before 1pm. Cloudy, with a high near 48. Northeast wind around 5 mph. Chance of precipitation is 20%.

    High: 48 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers. Cloudy, with a low around 39. East wind around 5 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Cloudy then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain, mainly after 4am. Patchy fog. Low around 42. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain, mainly before noon. Areas of fog before noon. High near 51. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 39. Northeast wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers before 1pm. Cloudy, with a high near 48. Northeast wind around 5 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Cloudy, with a low around 39. East wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Unionville PA
 39.89°N 75.78°W (Elev. 449 ft)
Last Update:
4:10 pm EST Mar 4, 2026
Forecast Valid:
10pm EST Mar 4, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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