Beginning at 11 a.m. a 12-hour time span of unsafe air qualities for sensitives groups will be in effect.

The state Department of Environmental Protection has declared the elevated air quality alert for the second day Tuesday as a result of hot temperatures.

The pollution in the air, mostly from automobile exhaust, combines with sunlight and heat to form ozone. This change in oxygen, at the ground level, is an irritant for sensitive groups.

Sensitive groups include children, the elderly, and those with respiratory diseases such as asthma - and all should avoid outdoor strenuous activity during the afternoon and evening hours.

The alert has been issued by DEP for Atlantic, Cape May, Cumberland and Ocean Counties until 11 p.m.

The heat also brings with it the chance of scattered thunderstorms, said  Kristin Kline, meteorologist with the National Weather Service.

Areas further inland can expect to see temperatures in the low 90s while coastal areas will be in the high 80s over the next few days, Kline said.