Millions of people in New York City and other Northeast locations scrambled to keep themselves free of the smoky air throughout the day and evening on Tuesday.

       MORE: Wildfire smoke map: Which US cities, states are being impacted by Canadian wildfires

       The city's skyline was barely visible for most parts of the day, and the smell of the smoke was strong as commuters hit the evening rush.

       Manhattan's skyline is barely visible before sunset as the city is enveloped in smoke from continued wildfires in Canada on June 6, 2023, New York City.

       Gary Hershorn

       Times Square is enveloped in smoke from continued wildfires in Canada, June 6, 2023, New York City.

       Gary Hershorn

       The Chrysler Building in Manhattan's skyline is barely visible before sunset as the city is enveloped in smoke from continued wildfires in Canada on June 6, 2023, New York City.

       Gary Hershorn

       The Manhattan skyline is barely visible hours before sunset as it is enveloped in smoke from continued wildfires in Canada on June 6, 2023 in New York City.

       John Angelillo/UPI/Shutterstock

       The Manhattan skyline is barely visible hours before sunset as it is enveloped in smoke from continued wildfires in Canada on June 6, 2023 in New York City.

       Patrick Sison/AP

       Buildings in lower Manhattan in New York are partially obscured by smoke from Canadian wildfires on June 6, 2023.

       Patrick Sison/AP

       The sun over New York City takes on a red appearance on a hazy morning resulting from Canadian wildfires on June 6, 2023 in New York City.

       Spencer Platt/Getty Images

       The sky over Times Square is enveloped in smoke from continued wildfires in Canada, June 6, 2023, New York City.

       Gary Hershorn

       People walk through a Brooklyn Park on a hazy morning resulting from Canadian wildfires on June 6, 2023 in New York City.

       Spencer Platt/Getty Images