Occasionally I’ve been asked where the cleanest air in the US is located.  This is especially important for those who have health issues related to breathing, such as COPD, allergies, or cystic fibrosis.  It can be hard to find this information since monitoring is usually done by individual state agencies who don’t all use the same format for reporting.  For example, here is the air quality monitoring site for Georgia.

Here is an EPA site which allows you to compare air quality across different regions of the US. Keep in mind that not all areas monitor their air, so your county may or may not be represented.  https://www.epa.gov/aircompare/index.htm  You can also get more complete data from EPA cities with the cleanest and dirtiest air at https://www.stateoftheair.org/2015/city-rankings/.

If you are looking for pollen data, here are a couple of options: