Assertion: smog | /r/CapableOf | reach unhealthy levels
Facets:
Source sentences:
text: Many cities increased the number of days when soot soared to record-breaking levels, the report says, and "more cities suffered from higher numbers of days when smog reached unhealthy levels.
text: On the other end of the scale, only six metro areas recorded no days when smog or short-term soot pollution reached unhealthy levels, according to the report: Bangor, Maine; Burlington, Vermont; Honolulu; Lincoln, Nebraska; Wilmington, North Carolina; and the Melbourne, Florida, metro area.