Another air quality alert is in effect Tuesday for NYC, western Long Island, the Hudson Valley, northwest New Jersey and southwest Connecticut.

Smoke from wildfires burning in Canada has caused air quality alerts for parts of New York state, including New York City.

Hazy skies descend over the New York City area again on Tuesday, re-upping some air quality alerts related to Canadian wildfire smoke. As of 10 a.m., the air quality index was 121, which is considered unhealthy for sensitive groups.