If you’re traveling in the Northeast or Upper Midwest in this country, or in Europe, this is developing into the summer of smoke.

Wildfires in Canada drifted into at least 17 U.S. states, including the Great Lakes region, New England, Michigan, Wisconsin, and Minnesota.

In Europe, wildfires in France are covering much of the continent in smoke.

Your choices for summer fun may be limited to indoor activities, so monitor the Air Quality Index at your destination and bring along an N95 mask, just in case.