National Weather Service United States Department of Commerce

Air Quality Awareness Week is May 6 - May 10, 2024


Learn about air quality and what causes it to change:


Learn about AirNow:


The National Weather Service forecast office in Upton, New York (Central Long Island) will relay official air quality information from New York, New Jersey, and Connecticut state environmental agencies, New York State Department of Environmental Conservation (NYS DEC), New Jersey Department of Environmental Protection (NJ DEP), and Connecticut Department of Energy and Environmental Protection (CT DEEP). 


Air Quality Index (AQI) – a measure of how polluted the air is and what health effects this results in


AQI Range




Health Effects



Satisfactory, little or no risk.



Acceptable, but moderate health concern for very small number of people who are unusually sensitive to air pollution for some pollutants.


Unhealthy for Sensitive Groups

General public not likely to be affected. Members of sensitive groups may experience health effects.



Everyone may begin experience health effects and sensitive groups more serious health effects.


Very Unhealthy

Health alert: everyone may experience more serious health effects.



Health warnings of emergency conditions. The entire population is more likely to be affected.


NWS New York, NY Air Quality Forecasts

Latest Air Quality Alert

National Air Quality Information from AIRNow

New York Air Quality Indices from NYS DEC

New Jersey Air Quality Indices from NJ DEP

Connecticut Air Quality Indices from CT DEEP

Air Quality Awareness

Air Quality Research

Air Quality Issues

Air Quality Forecast Guidance for the Northeast Metro Area


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