DRAFT 10/17/01 @ 11:30 a.m.
>150-250 >355-425 Very Unhealthy People with respiratory or
heart disease, the elderly
and children, should avoid
Everyone may experience any outdoor activity;
everyone else should avoid
more serious health
prolonged exertion.
effects.
>250 >425 Hazardous Everyone should avoid any
outdoor exertion; people
with respiratory or heart
The entire population disease, the elderly and
children, should remain
could be affected. indoors.
* Developed from EPA’s Air Quality Index: A Guide to Air Quality and Your Health, EPA-454/R-00-005, June
2000 and EPA Guideline for Reporting of Daily Air Quality - Air Quality Index (AQI), EPA-454/R-99-010, July
1999 (at: http://' '.eDa.gov/airnow/Dublications.html).
** These comparison levels are guidelines to make public health decisions. Detected concentrations of PM above
specific guideline levels does not mean that adverse health effects will occur.
NYC-WTC_000153213
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000153213Source: NYC Law Department, mirrored locally
Document displaying the New York State Department of Environmental Conservation air quality index and pollutant level thresholds for general health effects.