Students wear mask to protect themselves from poor air quality due to increasing smog in the city as they attend their school, in Lahore, Pakistan, Monday, Nov. 4, 2024. (AP Photo/K.M. Chaudary)

Students wear mask to protect themselves from poor air quality due to increasing smog in the city as they arrive at their school, in Lahore, Pakistan, Monday, Nov. 4, 2024. (AP Photo/K.M. Chaudary)

Students wear mask to protect themselves from poor air quality due to increasing smog in the city as they head to their school, in Lahore, Pakistan, Monday, Nov. 4, 2024. (AP Photo/K.M. Chaudary)

A teacher and students wear mask to protect themselves from poor air quality due to increasing smog in the city as they attend their school, in Lahore, Pakistan, Monday, Nov. 4, 2024. (AP Photo/K.M. Chaudary)

A student wears mask to protect herself from poor air quality due to increasing smog in the city as she heads to school, in Lahore, Pakistan, Monday, Nov. 4, 2024. (AP Photo/K.M. Chaudary)

Orange Line Metro Train runs as heavy fog reduces visibility, in Lahore, Pakistan, Sunday, Nov. 3, 2024. (AP Photo/K.M. Chaudary)

Pigeons fly in heavy smog in Lahore, Pakistan, Sunday, Nov. 3, 2024. (AP Photo/K.M. Chaudary)