Delhi’s air quality worsened to the “severe” category on Saturday morning (December 13, 2025), prompting authorities to implement Stage 3 of the Graded Response Action Plan (GRAP). The Commission for Air Quality Management in NCR and Adjoining Areas (CAQM) announced the emergency measures to curb pollution in the capital and neighboring regions.

Air pollution in New Delhi soared to hazardous levels on Tuesday, with the city recording the highest readings worldwide, according to Swiss group IQAir.

An Air Quality Alert remains active statewide until 11:00 p.m. due to lingering Canadian wildfire smoke and haze. Temperatures will be seasonably warm, with highs mostly in the lower 80s away from the coast and in the 70s along the shore.

The New York State Department of Environmental Conservation has issued an air quality health advisory for Tuesday across several upstate counties due to elevated levels of fine particulate matter.

Smoke from wildfires in northern Ontario and the Canadian Prairies has led to deteriorating air quality and reduced visibility in several major cities, including Toronto, Ottawa, and Montreal on Friday.

Hundreds of thousands of residents across four U.S. states have been urged to stay indoors as air quality alerts remain in effect throughout the Midwest.

New York City and Long Island are under an air quality alert as smoke from a New Jersey wildfire drifts into the region.