I discovered a section on The Weather Channel's web page that addresses "Air Quality Index". It is along the right side of the page. It looks at humidity, pollution, pollen and particles in the air. It will actually say "those with heart disease and COPD will be effected" on the higher readings. I am more short of breath and cough with the index is higher than 50. I know that on those days I need to close the windows, turn on the AC and hold off on outdoor activities or I should have my rescue inhaler with me.