A foreign tourist family walks wearing face mask amidst a thick layer of smog as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

Commuters drive through a thick layer of smog as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

Sun is seen through a thick layer of smog as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

A office goer walks wearing a face mask amidst a thick layer of smog as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

School children play as they return from the school that was closed as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

Office goers walk wearing a face mask amidst a thick layer of smog as air pollution shoots up in New Delhi, India, Monday, Nov. 18, 2024. (AP Photo/Manish Swarup)

A farmer holds a placard that reads, "Macron stop the Mercosur it makes you deaf " as he stands next to tractors on a blocked highway in Velizy-Villacoublay, outside Paris, Sunday, Nov. 17, 2024. (AP Photo/Michel Euler)

A farmers walks between tractors on a blocked highway in Velizy-Villacoublay, outside Paris, Sunday, Nov. 17, 2024. (AP Photo/Michel Euler)