NAQI starts with two basic convictions. First, every building is polluted or toxic. Second, every building is getting worse ... year after year.
Whether the pollution or toxicity level is low or high, every building is an enclosed environment where chemicals, pathogens, pesticides, and pollution enters, but rarely leaves. Like low-lying ground, the worst pollutants accumulate in buildings.
The next question is the toleration level of workers. Workers with weak systems will be the first to react to pollution, mold, pathogens, and toxins. As the condition continues, others will experience itchy or dry eyes, coughs, tiredness, afternoon headache, and feeling of lethargy.