Air is found every where. That is what we breath in and out to survive and live. It can be harmful if it is polluted. Such as by inversions by weather and many cars out on the roads. That is why they suggest people car pool. On Red days that means those with respiratory problems such as Asthma should not go out if they can help it it can make their health problem worse where they can have difficulties breathing. Yellow means a day of caution for those and Green means it is ok for them to go out. I would make my own pictures explaining all this wand what green, red, and yellow days are. The state wil let you know what kind of day it is on the news every morning. An inversion is like when there is lots of fog outside. Green days are helpful for those with respiratory problems because it means not much of a problem if at all for them to go out. The wind blows the pollution around and it is just not a good thing. I know all ths because some of my family suffer from Asthma.
