Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

A Few Clouds

79°F

26°C

Humidity	58%
Wind Speed	E 6 mph
Barometer	30.13 in
Dewpoint	63°F (17°C)
Visibility	9.00 mi
Heat Index	81°F (27°C)
Last update	4 Aug 12:55 pm EDT

More Information:

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

Extended Forecast for

3 Miles NNE Chatham PA

This Afternoon
High: 83 °F
Mostly Sunny
Tonight
Low: 65 °F
Increasing
Clouds
Wednesday
High: 82 °F
Chance
Showers then
Showers
Wednesday Night
Low: 70 °F
Chance
T-storms then
Slight Chance
Showers
Thursday
High: 86 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms then
Chance
Showers
Friday
High: 86 °F
Sunny then
Chance
T-storms
Friday Night
Low: 69 °F
Chance
T-storms
Saturday
High: 85 °F
Partly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 83. East wind around 5 mph.

Tonight

Increasing clouds, with a low around 65. Calm wind.

Wednesday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 82. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Sunday

Mostly sunny, with a high near 86.

Sunday Night

Partly cloudy, with a low around 70.