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Chilly nights in the forecast mean that some people will be using their fireplaces or woodburning stoves.  Burning wood creates many indoor air pollutants, including carbon monoxide, and smoke from fireplaces and stoves contributes to particle pollution outdoors.  Sometimes, these pollutants can trigger health problems in children and adults with respiratory conditions, such as asthma. [...]

During the winter, cold, still air can cause inversions that trap air pollution close to the ground.  Unhealthy levels of air pollution can trigger health problems in some individuals, including those with heart and lung conditions, such as asthma or heart disease.  Sometimes, when pollution levels rise, a burn ban will be put in place [...]

The Columbia Gorge is important to Oregon not only as a great place to visit, but as the home for 70,000 Oregonians.  Summer heat often means hazier skies for Gorge residents and visitors, decreasing visibility of the Gorge’s beautiful vistas and triggering health problems for asthmatics and others with lung diseases.  Viewer Tip: Car exhaust [...]

Haze occurs when sunlight encounters pollution particles in the air.  Some sunlight is absorbed by the pollution particles, and some of it is scattered away.  When sunlight is absorbed and scattered, it can make outdoor views less clear and colorful, and on windy days, haze can be blown miles away from where it originated. Viewer [...]

Haze occurs when sunlight encounters pollution particles in the air.  Some sunlight is absorbed by the pollution particles, and some of it is scattered away.  When sunlight is absorbed and scattered, it can make outdoor views less clear and colorful, and on windy days, haze can be blown miles away from where it originated.  In [...]

Haze has become an important indicator of the amount of pollution in our air.  Without haze, it is possible to see almost 140 miles westward, but in many parts of the United States, air pollution has cut the visibility range to between 33 and 90 miles!  Limited visibility can ruin the spectacular views of some of [...]

Did you know that over an acre of forest is needed to remove the carbon dioxide produced by one passenger car over the course of a year?  Nationwide, cars account for about 25 percent of air pollution in the U.S. – air pollutants can trap heat in the Earth’s atmosphere, cause health problems in humans, [...]