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Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fair

71°F

22°C

Humidity 93%
Wind Speed Vrbl 3 mph
Barometer 30.11 in
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 19 May 4:55 am EDT
Extended Forecast for

3 Miles NE Unionville PA

Heat Advisory May 19, 05:12am until May 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory May 19, 05:12am until May 20, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Today

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Southwest wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly after 2pm. High near 92. West wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 55. North wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers

  • Thursday

    Thursday: A chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 68. Northeast wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 94. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 70. Southwest wind around 5 mph.
Wednesday
Showers and possibly a thunderstorm, mainly after 2pm. High near 92. West wind 5 to 15 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 55. North wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly between 8am and 2pm. Partly sunny, with a high near 68. Northeast wind 5 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Friday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.
Friday Night
Showers. Low around 48. Chance of precipitation is 80%.
Saturday
Showers. High near 62. Chance of precipitation is 80%.
Saturday Night
Showers likely. Cloudy, with a low around 53. Chance of precipitation is 70%.
Sunday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Memorial Day
Mostly cloudy, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Unionville PA
 39.93°N 75.68°W (Elev. 226 ft)
Last Update:
4:07 am EDT May 19, 2026
Forecast Valid:
5am EDT May 19, 2026-6pm EDT May 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