Air quality alert Wednesday for NYC and northern suburbs

An air quality alert is in effect Wednesday for the second day for parts of New York.

It will last until midnight for New York, Bronx, Kings, Queens, Richmond, Westchester and Rockland counties. 

Officials say the air quality levels are predicted to be greater than an Air Quality Index, or AQI, of 100. It's due to fine particulates. 

When AQI is in the 100-150 range, it is considered unhealthy for sensitive groups, including people with heart or lung diseases, children, pregnant women and older adults. 

"The concern there is because of the lighter winds, the air being so stagnant, officials are concerned that this is leading to some poor air quality," CBS News New York's Tony Sadiku reported. "Thankfully, it's not that bad everywhere. Most of the Tri-State is seeing air quality in the moderate range." 

A dense fog advisory was in place until 10 a.m. for parts of southern Connecticut, northeastern New Jersey and southeastern New York. 

Visibility was limited to one-quarter of a mile or less in some areas. 

"Take it slow and give yourself a little extra space and distance as we go through the day," said CBS News New York Meteorologist Tony Sadiku.

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