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.

Mostly Cloudy

65°F

18°C

Humidity 88%
Wind Speed NE 3 mph
Barometer 30.14 in
Dewpoint 61°F (16°C)
Visibility 9.00 mi
Last update 26 May 7:15 am EDT
Extended Forecast for

Coatesville PA

Dense Fog Advisory May 26, 07:22am until May 26, 08:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory May 26, 07:22am until May 26, 08:00am

    NOW until 8:00am Tue

    Dense Fog Advisory

  • Today

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Showers likely, mainly before 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 79 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59. West wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. Northwest wind 5 to 15 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Today
Mostly cloudy, with a high near 79. Northeast wind around 5 mph becoming south in the afternoon.
Tonight
A chance of showers after 2am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 59. West wind around 5 mph.
Thursday
Sunny, with a high near 75. Northwest wind 5 to 15 mph.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coatesville PA
 40.01°N 75.81°W (Elev. 489 ft)
Last Update:
4:08 am EDT May 26, 2026
Forecast Valid:
7am EDT May 26, 2026-6pm EDT Jun 1, 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