Long Island Air Quality Index

Air Quality Index (AQI) Forecast for New York and Long Island

The Air Quality Index is an index report of daily air quality. It tells you how polluted or clean the air is, as well as any health effects which might be caused by the quality. The index was developed as an easy method to correlate the different levels of pollutants to one scale. The higher the AQI value, the greater the health risk. When the AQI levels of ozone and or fine particles are excepted to or have exceeded an AQI value of 100, an Air Quality Health Advisory is issued alerting sensitive groups to take necessary precautions.

The Air Quality Forecast displays the forecasted maximum AQI Index value for eight Air Quality Health Advisory regions in New York state. It also displays the observed maximum values for the previous day. DEC’s Air Quality Health Advisory regions consist of the following:

  • Region I Long Island – Nassau and Suffolk
  • Region II New York City Metro – New York City, Rockland, and Westchester
  • Region III Lower Hudson – Dutchess, Orange, Putnam, Ulster, and Sullivan
  • Region IV Upper Hudson – Albany, Columbia, Fulton, Greene, Montgomery, Rensselaer, Saratoga, Schenectady, Schoharie, and Washington
  • Region V Adirondacks – Clinton, Essex, Franklin, Hamilton, northern Herkimer, Lewis, St. Lawrence, and Warren
  • Region VI Eastern Lake Ontario – northern Cayuga, Jefferson, Monroe, Oswego, and Wayne
  • Region VII Central – Allegany, Broome, southern Cayuga, Chemung, Chenango, Cortland, Delaware, southern Herkimer, Livingston, Madison, Onondaga, Oneida, Ontario, Otsego, Tioga, Tompkins, Schuyler, Seneca, Steuben, and Yates
  • Region VIII Western New York – Cattaraugus, Chautauqua, Erie, Genesee, Niagara, Orleans, and Wyoming

Air quality measurements from our statewide continuous monitoring network are updated hourly where available. Parameters monitored include ozone, fine particulate, carbon monoxide, sulfur dioxide, nitrogen oxides, methane/nonmethane hydrocarbons, and meteorological data.

The Air Quality Forecast website

AIRNow NY Air Quality Forecast