Search results: air quality

to know the level of air pollution, we usually rely on air quality index (aqi). so, what is the air quality index, how high is it harmful to human health?

indoor air pollution is not a new phenomenon. so how do you measure air quality in your home?

indoor air pollution is a serious problem and has the highest level of death, as up to 90% of human activity takes place in the home. here are 7 simple ways that everyone can do