Ozone

The pollutant of concern is ground-level ozone, a major component of photochemical smog. People, especially young children and those who have respiratory disease, such as asthma, are urged to take precautions.

Air quality and heat advisories are in effect for Long Island and NYC today due to high heat, humidity and smog.

An air quality health advisory has been issued for Long Island by the State Department of Environmental Conservation and will remain in effect through 11 p.m., the Suffolk County health department said in a press release this afternoon. The pollutant of concern is ozone.

An air quality health advisory will be in effect again tomorrow for the Long Island region from 11 a.m. to 11 p.m.

Air quality Wednesday will be "unhealthy for sensitive groups," including the elderly, young children and people respiratory disease (such as asthma), who should consider limiting strenuous outdoor activities, according to the advisory.

An air quality health advisory is in effect today for the Long Island and Metropolitan New Your City regions. The pollutant of...

An air quality health advisory is in effect today on Long Island and in the NYC metro region. The advisory is in effect from 11 a.m. to 11 p.m.

An air quality health advisory is in effect Thursday for Long Island, where ground-level ozone will be unhealthy for sensitive groups.

An air quality health advisory for ground-level ozone pollution is in effect Sunday and Monday, from 11 a.m. to 11 p.m.

The Air Quality Index for ozone today is forecast to reach 130 on Long Island today.