Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog/Mist

67°F

19°C

Humidity 100%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 67°F (19°C)
Visibility 3.00 mi
Last update 28 Jun 6:55 am EDT
Extended Forecast for

3 Miles SSW Atglen PA

  • Today

    Today: A chance of showers and thunderstorms, mainly between 3pm and 5pm.  Areas of fog before 9am.  Otherwise, mostly cloudy, with a high near 78. East wind 3 to 5 mph.  Chance of precipitation is 30%.

    High: 78 °F

    Areas Fog
    then Chance
    Showers

  • Tonight

    Tonight: Patchy fog between midnight and 2am.  Otherwise, mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Mostly sunny, with a high near 84. Light east wind.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. South wind 3 to 5 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 3pm and 5pm. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 78. East wind 3 to 5 mph. Chance of precipitation is 30%.
Tonight
Patchy fog between midnight and 2am. Otherwise, mostly cloudy, with a low around 63. Calm wind.
Monday
Mostly sunny, with a high near 84. Light east wind.
Monday Night
Mostly clear, with a low around 63. South wind 3 to 5 mph.
Tuesday
Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny and hot, with a high near 92.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny and hot, with a high near 98.
Friday Night
Partly cloudy, with a low around 73.
Independence Day
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Atglen PA
 39.92°N 76.01°W (Elev. 636 ft)
6:45 am EDT Jun 28, 2026
7am EDT Jun 28, 2026-6pm EDT Jul 4, 2026
 
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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