- National Allergy Bureau - Daily pollen/spore counts for US cities, including source-specific counts and alerts by email.
- 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
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