“Urban environmental hazard” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.SMOG is the answer to the New York Times crossword clue “Urban environmental hazard”. It was last seen in the puzzle of July 21, 2026, where it runs at 23 Across and fills 4 squares. It crosses 4 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.