Windmill School & Air Quality 

 

In an effort to maintain the most up to date air quality assessments, we will be consulting Purple Air. Purple Air is an air quality monitoring network built on a new generation of "Internet of Things" sensors to keep an eye on local air quality. We have determined that Purple Air maintains the closest monitors to our location and will be the most accurate tool for us. We will use PurpleAir with the LRAPA conversion factor enabled.*

 

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We will be using five air quality measurements as a baseline

 

Green 0-50

If air quality is under 50 there will be no restrictions.

With air quality below 100, Windmill School will be fully operational and provide programming under our normal rules.

 

Yellow 50-100

If the air quality is between 50- 100; Air quality is considered acceptable; however, if you are exposed for 24 hours there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.  

With air quality between 50-100, Windmill School will be fully operational and provide programming under our normal rules. 

 

Orange 100-150

If the air quality is between 100-150; members of sensitive groups (people with heart or lung disease, older adults, children and teens: Reduce your exposure by choosing less strenuous activities or shortening the amount of time you are active outdoors). The general public is not likely to be affected. 

With air quality between 100 - 150, Windmill’s administration will use their discretion to decide if school will be open.  An elevated AQI closer to 150, the lack of ability to shelter in place due to COVID, and children being in the “sensitive group” will all be taken into consideration.

 

Red 150-200

If the air quality is between 150-200; Everyone may begin to experience health effects if they are exposed for 24 hours. 

With air quality between 150-200, Windmill School would have moved all classes inside but in these times of COVID - 19, social distancing, and the desire to hold as much of our class outside, classes will be canceled.

 

Purple 200+

If the air quality is over 200; Health alert. Everyone may experience more serious health effects if they are exposed for 24 hours. 

With air quality 200+, Windmill School will cancel all classes 


 

Note: We have discovered that unlike regular ozone pollution, Particle pollution episodes, such as wildfire smoke increase respiratory health risks. Particle pollution can be high any time of day and as such, we should limit outdoor activity when there is any smoke in the air. 

650.851.0771| info@windmillschool.com | 900 Portola Road Portola Valley, California 94028 

©2020 by Windmill School, Inc., a 501(c)(3) nonprofit preschool.