The state has issued an air quality health advisory for all regions of New York through Friday, including Long Island, due to the Canadian wildfires.
The air quality on Long Island remained at moderate early, meaning air quality is acceptable but there may be a risk for some who are sensitive to air pollution. Later in the day it became unhealthy for sensitive groups.
The highest concentration of smoke will not hit Long Island. However, the biggest pollution is ozone.
Doctors say anyone who had a problem last time, or has respirator issues should stay indoors.
Emergency cellphone alerts will be sent to New Yorkers if the air quality becomes unhealthy.
Check the air quality in your neighborhood
here.