Related topics: air pollution
Air Quality Index
hideThe 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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News tagged with air quality
New approach to emissions makes climate and air quality models more accurate, major study finds
Space & Earth / Earth Sciences
Dec 10, 2009 |
3.9 / 5 (7) |
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It's no secret that the emissions leaving a car tailpipe or factory smokestack affect climate and air quality. Even trees release chemicals that influence the atmosphere. But until now, scientists have struggled to know where ...
Californians -- and their cell phones -- will help computer scientists monitor air pollution
Technology / Computer Sciences
Dec 04, 2009 |
1 / 5 (2) |
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You want to go for a run, but you don't want to run in polluted air that might aggravate your asthma. University of California, San Diego computer scientists are creating a network of environmental sensors ...
Research shows some plants can remove indoor pollutants
Dec 02, 2009 |
4.8 / 5 (18) |
3
(PhysOrg.com) -- Some plants have the ability to drastically reduce levels of indoor pollutants, according to new research at the University of Georgia. Researchers showed that certain species can effectively ...
Search results for air quality
Broadcasters' woes could spell trouble for free TV
22 hours ago |
4.7 / 5 (3) |
12
(AP) -- For more than 60 years, TV stations have broadcast news, sports and entertainment for free and made their money by showing commercials. That might not work much longer.
New form of malaria threatens Thai-Cambodia border
Dec 28, 2009 |
5 / 5 (1) |
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(AP) -- O'treng village doesn't look like the epicenter of anything. Just off a muddy rutted-out road, it is nothing more than a handful of Khmer-style bamboo huts perched crookedly on stilts, tucked among ...
Pollution linked to hospitalizations for pneumonia in older adults
Dec 23, 2009 |
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0
Older adults with long-term exposure to higher levels of pollution are at higher risk for hospitalization for pneumonia, according to researchers in Canada.
'Particle soup' discovery will improve climate predictions
Space & Earth / Earth Sciences
Dec 21, 2009 |
4.1 / 5 (7) |
2
(PhysOrg.com) -- New research from scientists at The University of Manchester is set to improve predictions about climate and air quality - and make life easier for those suffering from respiratory problems.
National Robotics Engineering Center Demonstrates the Future of Smart Work
Dec 21, 2009 |
5 / 5 (3) |
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The National Robotics Engineering Center, (NREC) at Carnegie Mellon University is at the forefront of partnering man with technology to improve safety and costs. Among the completed projects are, the Caisson ...
Want to live well? Harvard experts offer pragmatic pointers on getting healthy and staying there
Dec 17, 2009 |
3.9 / 5 (13) |
3
You are what you eat. You're also how you feel, how you exercise, how you sleep, how you handle money, how you relate to people, and what you value.
Research finds happiest US States match a million Americans' own happiness states
Other Sciences / Social Sciences
Dec 17, 2009 |
2 / 5 (6) |
18
New research by the UK's University of Warwick and Hamilton College in the US into the happiness levels of a million individual US citizens have revealed their personal happiness levels closely correlate ...
Japan mines toxic e-waste for precious materials
Dec 17, 2009 |
4.9 / 5 (7) |
0
Seeking to turn an environmental problem into an economic opportunity, high-tech companies in resource-poor Japan are mining mountains of toxic e-waste for precious materials.
New research may help to clean drainage from abandoned mines
Dec 16, 2009 |
4.8 / 5 (4) |
0
(PhysOrg.com) -- In a quiet green glen near Ashville, Pa., lies a rust-colored pond. A deep, rectangular hole in the ground, it somewhat resembles an Olympic-sized pool. Few people, however, would make the ...
New results from a terra-ific decade in orbit
Space & Earth / Earth Sciences
Dec 15, 2009 |
5 / 5 (1) |
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December 18, 2009, marks the tenth year since the launch of Terra, one of NASA's "flagship" Earth observing satellites. But the decade is more than just a mechanical milestone. With each additional day and ...
List of search results for air quality
