Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Hazardous Weather Conditions

Heat Advisory until August 8, 08:00 PM EDT

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog/Mist

71°F

22°C

Humidity	100%
Wind Speed	Calm
Barometer	30.14 in
Dewpoint	71°F (22°C)
Visibility	4.00 mi
Last update	7 Aug 5:55 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles NE Unionville PA

Heat Advisory August 7, 06:02am until August 8, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 7, 06:02am until August 8, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Today
High: 90 °F
Areas Fog
then Heavy
Rain
Tonight
Low: 72 °F
Heavy Rain
then Slight
Chance
T-storms and
Patchy Fog
Saturday
High: 89 °F
Patchy Fog
then Chance
T-storms
Saturday Night
Low: 71 °F
Chance
T-storms then
Chance
Showers and
Patchy Fog
Sunday
High: 89 °F
Patchy Fog
then Sunny
Sunday Night
Low: 70 °F
Mostly Clear
Monday
High: 90 °F
Sunny
Monday Night
Low: 73 °F
Partly Cloudy

Detailed Forecast

Today

A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rainfall. Areas of fog before 9am. Otherwise, mostly sunny, with a high near 90. Light west wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before midnight. Some of the storms could produce heavy rainfall. Patchy fog after midnight. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers and thunderstorms, mainly after 3pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A chance of showers and thunderstorms before 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Patchy fog before 8am. Otherwise, sunny, with a high near 89. West wind 5 to 10 mph.

Sunday Night

Mostly clear, with a low around 70.

Monday

Sunny, with a high near 90.

Monday Night

Partly cloudy, with a low around 73.

Tuesday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.