Jun. 5—The National Weather Service in Mount Holly, N.J., which covers southeastern Pennsylvania, has issued a fire weather watch alert for Tuesday.
"Critical fire weather conditions are forecast to occur due to a combination of strong winds, low relative humidities, and dry fuels," the alert states.
The Pennsylvania counties affected include: Berks, Montgomery, Bucks, Carbon, Chester, Delaware, Lehigh, Monroe, Northampton and Philadelphia as well as several New Jersey counties.
The forecast calls for temperatures in the mid-70s to low 80s with relative humidity as low as 26% and northwest winds at 10 mph to 15 mph with gusts up to 25 mph.
The Pennsylvania Department of Environmental Protection also has issued a Code Orange air quality alert Tuesday for the Lehigh Valley/Berks County area.
People who are vulnerable to the effects of air pollution — the elderly, young children and those with breathing problems such as asthma, emphysema and bronchitis — can minimize the effects by avoiding strenuous activity or exercise outdoors.