National Allergy Bureau
Get the latest pollen/spore counts.

WeatherSmith
Air quality forecasts and related information for the southwestern United States

Personal Allergy Forecast
Pollen.com's Personal Allergy Alert Forecast provides vast amounts of information on pollen and allergies for sufferers. Get a daily allergy forecast emailed to you.

Air Quality Forecasts- USA
Ozone, Wildfire, Air Stagnation

Air Pollution
Air Pollution links from About.com