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Cache AirTrack presents the most recent PM2.5 and temperature data from the Cache Valley and is color coded to the AQI scale. Click on the graphic for current air quality trends.
The Cache Valley has experienced poor air quality events during stagnant, wintertime conditions. These events have led public officials, university researchers, and state air quality specialists to more carefully look at air quality problems within the Cache Valley. The air quality issue surrounds a class of pollutants referred to as PM2.5. This web site has been developed to provide some background and information about PM2.5 and its formation, as well as to point people to resources provided by other agencies.
Particulate matter (PM), also known as particle pollution, includes a broad mixture of solids and liquid droplets. Some particles are emitted directly; others are formed in the atmosphere when gasseous pollutants react. PM come in a wide range of sizes. Those particles measuring 2.5 micrometers or less ( PM2.5) are called fine particles. These particles are so small (about 1/40th the width of a single human hair ) they can be detected only with an electron microscope, and once they get into the lungs they can potentially cause serious health problems. Sources of fine particles include all types of combustion, motor vehicles, power plants, residential wood burning, forest fires, agricultural burning, and some industrial processes.
According to the EPA, PM exposure can lead to a variety of health effects. For example, numerous studies link particle levels to increased hospital admissions and emergency room visits. Both long- and short-term particle exposures have been linked to health problems.
Long-term exposures, such as those experienced by people living for many years in areas with high particle levels, have been associated with problems such as reduced lung function and the development of chronic bronchitis.
These particles are so small that they can become imbedded in human lung tissue, causing or exacerbating respiratory diseases and cardiovascular problems. Other negative effects are reduced visibility and accelerated deterioration of buildings.
Short-term exposures to PM2.5 (hours or days) can exacerbating respiratory diseases and cardiovascular problems, causing asthma attacks and acute bronchitis, and may also increase susceptibility to respiratory infections. When PM2.5 levels are elevated healthy children and adults may experience temporary minor irritation. More information about the health effects of PM2.5 are available through the Bear River Health Department as well as through the EPA.