Smoke from wildfires burning in Canada has caused air quality alerts to be issued in parts of New Jersey and New York on Sunday.

An air quality advisory means the air quality may approach or exceed unhealth standards. Those with health conditions should take precautions.

New York City, Long Island and the Hudson Valley will all experience air quality within the 101-150 range on the air quality index Sunday, the state’s Department of Environmental Conservation forecasted—meaning the air could contain fine particles and could be “unhealthy for sensitive groups.”