Reason to turn on headlights (4)

I believe the answer is:

haze

(Other definitions for haze that I've seen before include "Film" , "State of mental confusion - mist" , "Slight atmospheric mist" , "A thin mist, perhaps from heat" , "Daze, fog" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.