A large collection of records has been made public, shedding light on air quality concerns after a major event. These documents show that officials were aware of unsafe breathing conditions. The release of over 170,000 pages of records has provided new information about the situation.

Contamination data gathered in the aftermath is included in the records. This data was collected by environmental agencies.

Further details about the records and their release are available from the source, including comments from Mayor Zohran Mamdani about the ongoing impact of the event.