NYC Releases 25-Year-Old Air Quality Records After 9/11

The city has opened a collection of over 170,000 pages that detail its knowledge and actions regarding air quality around Ground Zero in the months following the September 11, 2001 attacks.

Mayor Zohran Mamdani said the city’s officials were aware of toxic airborne contaminants but reassured the public that the environment was safe, a statement that has led survivors to accuse leaders of misleading the public.

The release comes after a lawsuit by the advocacy group 9/11 Health Watch, which sued for access to the documents and found 68 boxes hidden in city archives last year.

Mamdani announced that the records will be uploaded to an online portal in time for the attacks’ 25th anniversary and that the city will spend more than $34 million on the effort.

The documents include a 2001 memorandum warning that the city could face up to 35,000 lawsuits related to early health advisories, and notes that asbestos had been found throughout tested areas.

Survivor advocate Jon Stewart highlighted that the city did not publicly recognize the air as toxic until October 2001.