If you react to mold in the air, you can keep track of whether your area is in the midst of a dangerous level of mold by following http://www.aaaai.org/global/nab-pollen-counts.aspx which tracks mold levels. The American Academy of Allergy, Asthma & Immunology website has a mapthat depicts 5 continental US regions, as well as many more pollen count stations. The information is not always up to the minute but it does indicate trends. It also lists four areas: Trees; weeds; grass and mold.
The weather channel’s mold spore map (pasted above) is located here: http://www.weather.com/maps/activity/allergies/usmoldspores_large.html