|
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 assigned 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. Limitations of the AQIMost air contaminants do not have an associated AQI. Many countries monitor ground-level ozone, particulates, sulfur dioxide, carbon monoxide and nitrogen dioxide and calculate air quality indices for these pollutants. Causes of Poor Air QualityThe AQI can worsen (go up) due to lack of dilution of air emissions by fresh air. Stagnant air, often caused by an anticyclone or temperature inversion, or other lack of winds lets air pollution remain in a local area. Indices by locationFrom Wikipedia under the
GNU Free Documentation License  urbantapestries.net 120px x 150px | 19.90kB [source page] sensing air quality jpg 07 Jul 2006 21 04 148k sensing air quality html 07 Jul 2006 20 23 1k sensing air quality thumb jpg 07 Jul 2006 21 04 20k playground evidence1 html 07 Jul 2006 21 03 1k  educationusingpowerpoint.org.uk 144px x 192px | 80.50kB [source page] ocr 3 brain and mind > 28 Oct 2007 15 27 107k ocr 3 air quality htm 02 Jan 2007 12 49 1k ocr 3 air quality gif 02 Jan 2007 12 49 81k ocr 2 understanding > 03 Sep 2006 14 17 1k  northendboston.com 369px x 350px | 32.10kB [source page] SW Locus jpg 15 Mar 2005 08 26 25K SW adj landuse jpg 15 Mar 2005 08 26 30K SW air quality jpg 15 Mar 2005 08 26 32K SW bldg gnrl jpg 15 Mar 2005 08 26 34K From Yahoo Image Search: "Air quality index"  expressiongreen.com admin Sun, 19 Jul 2009 19:46:54 GM Expression Green - Green Logistics, Urban . Air Quality. Management And Biofuels Use By Dr. SK Modak.  theday.com unknown Mon, 20 Jul 2009 11:16:47 GM It's pretty simple, and it has the additional benefit of improving . air quality. , water . quality. and biodiversity, said Ellen Hawes, forest policy analyst for Environment Northeast, one of the three groups. While much of the focus on the ...  delusionalduck.com Mon, 13 Jul 2009 13:24:04 GM Days forecasted as unhealthy are now known as . Air Quality. Action Days. The . Air Quality Index. , uses color codes to describe the . air quality. , the potential effect on your health, and the actions you can take to minimize your exposure. From Google Blog Search: "Air quality index"  news.google.com abc7news.com brentwood, CA -- An inspector from the Bay Area Air Quality Management District was sent to Brentwood today, where a four-alarm fire burned through an auto ... Highway 4 Reopens After Brentwood Fire KCBS Highway 4 still closed following Brentwood auto yard fire San Jose Mercury News all 28 news articles » news.google.com Houston Chronicle The heat index , how hot the air feels when temperature and humidity combine, will reach 104 degrees. Friday, a slight chance of scattered showers is ... Clark County issues air quality advisory San Jose Mercury News Lynne Plambeck: Global warming, air pollution and children's lungs Signal An "Action Day" has been declared for Lake Charles KPLC-TV Las Vegas Sun - Mesquite Local News - Sacramento News & Review all 30 news articles » news.google.com Santa Cruz Sentinel A recent study by the American Lung Association, from April 29, revealed that Californians suffer from some of the poorest air quality in the nation. ... and more » From Google News Search: "Air quality index" Why does Houston, TX have "n/a" for Air Quality Index...Continued? Q. Why does Houston, TX have "n/a" for Air Quality Index in the Money Magazine review of the "Best places to live"? Is the air quality so bad that they don't even want people to know what it is? Check it out here -> If the air quality is pretty bad they should let people know it for the sake of their health! Asked by EF - Sun Jul 29 20:26:15 2007 - - 6 Answers - 0 Comments A. Odd, isn't it? Perhaps the stats weren't provided to the magazine; they're available elsewhere. Answered by tonalc1 - Sun Jul 29 20:30:32 2007 About Belarus...? Q. I would like to know info about the lifestyle in Belarus. I visited a lot of web sites, but i like to know the regular people point of view. Basically I wanna know the following issues: 1. Minumun and average salary. 2. Life Quality (Security, homeless index, delinquency, nightlife, touristic places, etc...) 3. Bielorussian vs. foreign people (they are nice?) 4. Internacional Banks in Belarus? 5. Burger Kings? Pizza Hut? McDonalds? 6. Can you travel from Belarus to West Europe by train? Is Complicated? Need visa to go outside of Belaurs? 7. Price of a cup of coffe and cigarettes? 8. Rent of a nice apartament? 9. Water sanity? Air, food? 10. Could you open a saving account in a international bank? 11. Weather, average temperature in the… [cont.] Asked by PeatonUrbano - Mon Aug 20 16:45:43 2007 - - 2 Answers - 0 Comments A. 1) well, they are not a rich country, so they probably do not make much money, i dont know the currency they have. 2) The life quality is ok, people manage to get by, but they do not live a comfy lifestyle like Americans or Canadians do, they have a GDP per capita of roughly 4000, not very high/ 3) They are friendly, but they do not like the russians too much, mainly because the Russians made them speak Russian throughout the entire country. Most Belorussians dont speak Beloussian because of this. 4) They do have banks but not too many international banks, im not sure about that. 5) They have Fast food restaurants, not as much as America, but its there. Keep in mind that belarus has their own Belorussian chains that compete with burger… [cont.] Answered by Winning Fury - Tue Aug 21 01:49:21 2007 What is a good sleeping mat for cold weather camping?
Q. I've done research on the net and I think I'm more confused after having done so. I was leaning toward this one: but after reading the reviews, some people had problems with the construction breaking down and bubbles forming. THEN I was going to go with this one because the people who bought it had fewer complaints. Then I read an article that said closed cell pads were much better for insulation purposes than the open cell pads that I listed above. I also read that a lot of the open cell pads that are "self inflating" don't inflate very well and you have to give them a few breaths. The warm moist air from your lungs freezes inside the pad and damages the inner construction (which may be the source of the problems noted in the… [cont.] Asked by Jim - Sat Dec 13 08:34:32 2008 - - 5 Answers - 0 Comments A. Closed cell is the best way to go for winter use. Anything with air will give you less insulation and can become brittle in extreme cold. I use a Therm-A-Rest ultralight pro all summer, but come winter I revert back to a $10 closed cell pad I bought at Wal-Mart in 1999. I have a US Army issue closed cell pad that is slightly denser, but doesn't seem to offer that much more insulation than the $10 one. Wait...15cm? (!!!) That's like 6 inches thick!!! Are you sure you don't mean 15mm? 6 inches is thicker than house insulation! If you are sleeping on a foam pad THAT thick you should have no problems from ground cold whatsoever. I lived in VT for 6 years and went winter camping all the time using just my cheap little $10 pad. I never had… [cont.] Answered by Willie D - Sun Dec 14 10:53:20 2008 From Yahoo Answer Search: "Air quality index" |
