Connecticut environmental officials were monitoring reports Friday of soot being found in parked cars across the state.
The state Department of Energy and Environmental Protection said it was unclear exactly what was falling from the sky or why, but it had not caused poor air quality.
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In a statement, the department said monitors “have not been able to determine any single source, such as a wildfire, power plant or transportation-related emissions, that could cause this.”
Environmental officials in Connecticut are tracking a soot-like substance reportedly falling from the sky. (FoxNews)
Officials said there were reports of moderate amounts of fine particles in the air from air quality monitors in northeast Washington, DC, through New Jersey, western New York, Connecticut and Massachusetts.
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The department said a cold front and rain on Friday afternoon were expected to bring those levels back to the “good” range.
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The department said the airflow at 1,500 feet was following the Interstate 95 corridor northeast toward New England.