ISRiau Guidelines During Poor Air Quality

Updated August 2014

PSI: 0 -100:  Green

·      School Life as usual

PSI: 100 - 200:  Yellow

●      Limit outdoor activities, Recess and Physical Education activities indoors

●      Air filters will be operating in each classroom.

●      Air Masks to be worn when outdoors.

PSI: 200 - 300:  Orange

●      No outdoor activities and reduce indoor PE activities with limited physical exertion.

●      Air filters will be operating in each classroom.

●      Air Masks to be worn when outdoors.

PSI: 300 & above:  Red

●      No outdoor activities and minimal physical exertion.

●      Air quality is checked throughout the school day, beginning at 7:00am.

●      Air filters will be operating in each classroom.

●      Air Masks to be worn when outdoors.

The Pollutant Standards Index (PSI) The PSI converts measured pollutant concentration in a community's air to a number on a scale from 0 to 500. The PSI number of 100, corresponds to the air quality standard established under the federal Clean Air Act. According to the U.S. EPA, a PSI level in excess of 100 means that a pollutant is in the unhealthy range on a given day, a PSI level at or below 100 means that a pollutant reading is in the satisfactory range.