The National Weather Service has issued a severe thunderstorm watch for Berks, Chester and Montgomery counties through 10 p.m. Monday night.
A watch means there is the potential for thunderstorms with damaging winds and hails to develop.
The Pennsylvania Department of Environmental Protection also issued an ozone advisory for Tuesday, June 25. The DEP designated an orange air quality action day for Tuesday for Bucks, Chester, Delaware, Montgomery and Philadelphia counties. An orange designation means pollution and ozone levels in the air will be unhealthy for people with breathing difficulties.
“Ground-level ozone, a key component of smog, forms during warm weather when pollution from vehicles, industry, households and power plants “bakes” in the hot sun, making it hard for some people to breathe,” the DEP said in its press release. The department encourages area residents to reduce activities that could contribute to smog and ozone, including idling cars, mowing grass or unneccessary driving.
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