Effects of Light Pollution

Air Quality

The Wasatch Front experiences some of the worst air quality in the nation.

“Excess light at night can contribute to air pollution, according to a study by scientists at the National Oceanic and Atmospheric Administration (NOAA) and the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado. Findings presented at the American Geophysical Union in San Francisco . . . indicate that uplight from outdoor lighting that contributes to sky glow over cities also interferes with chemical reactions that naturally clean the air during nighttime hours.” [Light and Air Pollution]

Wildlife Migration and Health

Sky glow and brightness interfere with longstanding migration patterns. Additionally, reproduction cycles are interrupted leading to changes in population size. Impairment of night vision also leads to greater predation and decreased numbers. [IDA: Wildlife and Ecosystems].

It is important to note that Ogden Valley is part of the "Greater Yellowstone to Uintahs" migration corridor, one of the major migration corridors of the world (American Wildlands, Corridor of Life program).

Human Health

Bright night skies interfere with circadian rhythms leading to sleeplessness that contributes to issues of mood, weight and blood sugar. [IDA: Light Pollution and Human Health]



2016 Ogden Valley GEM Committee /Ogden Valley UT Chapter, International Dark-Sky Association (www.starrynightsutah.org) (www.darksky.org)