By: KDKA-TV News Staff

PITTSBURGH (KDKA) – The Pennsylvania Department of Environmental Protection has issued a Code Orange Air Quality Action Day for Saturday in the Liberty-Clairton area.

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The DEP says a strong temperature inversion and light southwesterly winds in the morning will likely contribute to a daily average concentration of fine particulate matter in the Code Orange range. That’ll most likely happen between 4 and 9 a.m.

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Young children, the elderly and those with respiratory problems are especially vulnerable and should limit outdoor activities.

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The Liberty-Clairton area includes Clairton City, Glassport Borough, Liberty Borough, Lincoln Borough and Port Vue Borough.