News tagged with air quality

Related topics: air pollution , pollution

Herbal shisha a potential health hazard, study says

(Medical Xpress)—Just because something is marketed as herbal doesn't make it healthy—especially when it comes to smoking shisha, which can contain toxic metals, tar and other carcinogenic compounds sometimes ...

Nov 11, 2013
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Breathing better, living longer

Arden Pope's students know him as an excellent economics teacher, but some would be surprised to learn that, thanks to him, the air they breathe today is cleaner than the first breath they ever took.

Sep 17, 2013
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Hidden dangers in the air we breathe

(Medical Xpress)—For decades, no one worried much about the air quality inside people's homes unless there was secondhand smoke or radon present. Then scientists at the U.S. Department of Energy's Lawrence ...

Apr 11, 2013
popularity 3 / 5 (2) | comments 1 | with audio podcast

Air Quality Index

The Air Quality Index (AQI) (also known as the Air Pollution Index (API) or Pollutant Standard Index (PSI)) is a number used by government agencies to characterize the quality of the air at a given location. As the AQI increases, an increasingly large percentage of the population is likely to experience increasingly severe adverse health effects. To compute the AQI requires an air pollutant concentration from a monitor or model. The function used to convert from air pollutant concentration to AQI varies by pollutant, and is different in different countries. Air quality index values are divided into ranges, and each range is assiged a descriptor and a color code. Standardized public health advisories are associated with each AQI range. An agency might also encourage members of the public to take public transportation or work from home when AQI levels are high.

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