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The Air Quality Index (AQI) is a standardized indicator of the air quality in a given location. It measures mainly ground-level ozone and particulates (except the pollen count), but may also include sulphur dioxide, and nitrogen dioxide. Various agencies around the world measure such indices, though definitions may change between places.
The U.S. Environmental Protection Agency and the Meteorological Service of Canada (MSC) differ on what AQI structure and health classification is used:
Health classifications used by the EPA:
More on [ Air Quality Index ]
Air Quality Alert in Springfield, MO Thursday, May, 17: Ground level ozone concerns Tomorrow... http://t.co/c4HwKSAa #Missouri #News #US
RFMissouri (Missouri) Thu, 17 May 2012 03:49:12 -0000
Air Quality Alert in Springfield, MO Thursday, May, 17: Ground level ozone concerns Tomorrow... http://t.co/c4HwKSAa #Missouri #News #US
Request for fairness, not "arbitrary rulemaking" from EPA on DeSoto Co. air quality designation #regscostjobs: http://t.co/XZCuw464
SenThadCochran (Senator Thad Cochran) Wed, 16 May 2012 23:12:49 -0000
Request for fairness, not "arbitrary rulemaking" from EPA on DeSoto Co. air quality designation #regscostjobs: http://t.co/XZCuw464
Tomorrow's Central Oklahoma air quality forecasted to remain moderate, posing risk to asthma sufferers and children: http://t.co/iQk6Morc
CleanAirOKC (ACOG Air Committee) Wed, 16 May 2012 20:56:56 -0000
Tomorrow's Central Oklahoma air quality forecasted to remain moderate, posing risk to asthma sufferers and children: http://t.co/iQk6Morc
An air quality health advisory has been issued for much of Central and Northeastern Oklahoma, including OKC and Tulsa: http://t.co/Kknkpdsn
CleanAirOKC (ACOG Air Committee) Wed, 16 May 2012 20:00:13 -0000
An air quality health advisory has been issued for much of Central and Northeastern Oklahoma, including OKC and Tulsa: http://t.co/Kknkpdsn
RT @NFRMPO: AQ: #Greeley air quality forecast for today is: Moderate - http://t.co/7RdlBLiR #AirQuality #AQI
greeleygov (City of Greeley, CO) Wed, 16 May 2012 18:50:10 -0000
RT @NFRMPO: AQ: #Greeley air quality forecast for today is: Moderate - http://t.co/7RdlBLiR #AirQuality #AQI
Air Quality: Widespread Use for ORVR & Stage II Waiver(Final) http://t.co/OdkrcOUq #finalregs #emissions #airemissions #caa #fuel #vehicles
FedCenter (FedCenter.gov) Wed, 16 May 2012 18:36:54 -0000
Air Quality: Widespread Use for ORVR & Stage II Waiver(Final) http://t.co/OdkrcOUq #finalregs #emissions #airemissions #caa #fuel #vehicles
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Meta Description: [ Pollen.com - current local accurate pollen and allergy reports, Including the only 4 day allergy alert forecast for every ZIP code in the Continental United States. Email Alert for allergies including pollen count are available. If you suffer from allergies get the 4 day allergy forecast. ]
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Meta Description: [ weather and air quality forecasts for the southwestern United States ]
