Is it a cold or allergy?  Symptoms can be similiar so use this guide from From the National Institute of Allergy and Infectious Diseases to determine which it is.

Pollen count and forecast  Put in your zip code to find out about the current pollen levels for trees, grasses and weeds.  Also see what the forecast is for the pollen levels.

National allergy levels  Get a map of pollen levels for the entire U.S. and the current best and  worst cities for pollen counts.

Relief for springtime allergies Suggestions from the Mayo Clinic on reducing seasonal allergy signs and symptoms.

Types of allergy medications  List includes the most common allergy treatments (both over-the-counter and prescription) and the specific allergic conditions they treat.

Allergy FAQ   Questions and answers about seasonal allergies and other allergies also.