Low-hanging wildfire smoke set off alarms and carbon monoxide detectors Sunday as fire danger remains "extreme" across New Jersey.

A series of wildfires ravaging parts of rain-starved New Jersey were sending plumes of smoke across the Hudson River and into New York, leaving much of the city blanketed in an eerie haze.

Climate change means the region can expect more frequent and more severe air pollution stemming from wildfires, experts say.