Air Quality Health Index - GovHK

The Air Quality Health Index (AQHI) compiled by the Environmental Protection Department (EPD) informs the public of the short-term health risk of air ... Skiptomaincontent Home Residents Environment AirQuality AirQualityHealthIndex PublicParticipationWaste&RecyclingAirQualitySustainableDevelopmentNoiseGlobalEnvironmentEnergyEfficiency&ConservationNatureConservationWaterQualityRenewableEnergyEnvironmentalComplianceEnvironmentalAssessment&PlanningIndustries&TradeSupport AirQualityHealthIndex Share: SharetoFacebook SharetoTwitter SharetoWeibo SharetoWhatsapp SharetoLine SharetoWechat TheAirQualityHealthIndex(AQHI)compiledbytheEnvironmentalProtectionDepartment(EPD)informsthepublicoftheshort-termhealthriskofairpollutioninHongKongandhelpsthepublictakeprecautionarymeasurestoprotecttheirhealth. HereyoucanlearnhowtheAQHIworksandwhatitcantellyouabouttheshort-termhealthriskofairpollution. HowtheAQHIWorks? TheAQHIofthecurrenthouriscalculatedfromthesumofthepercentageaddedhealthriskofdailyhospitaladmissionsattributabletothe3-hourmovingaverageconcentrationsoffourcriteriaairpollutants:ozone,nitrogendioxide,sulphurdioxide,andparticulatematter(PM10 orPM2.5,whicheverhasahigherhealthrisk)measuredateachairqualitymonitoringstationoftheEPD. Theriskfactorsassociatedwitheachpollutantwerederivedfromlocalhealthstatisticsandairpollutiondata. TheAQHIsarereportedhourlyateachgeneralandroadsidemonitoringstationtokeepthepublicuptodateofthelatestairqualitysituation. Wealsoprovidethehealthriskcategoriesforecastwhichservestoalertthepublicbeforetheonsetofhighhealthriskcategoriesduetopollutionepisodes. WhattheAQHIInforms?TheAQHIestimatestheadditionalshort-termhealthriskcausedbyheartandrespiratorydiseasesfromairpollutionthatleadtohospitaladmissions. Itmakesreferencetotheshort-termWorldHealthOrganizationAirQualityGuidelinesasanchorpointstodefinethelevelwherehealthriskishighduetoshorttermexposuretoairpollution. TheAQHIsarereportedonascaleof1to10and10+andaregroupedintofivehealthriskcategorieswithhealthadviceprovidedasbelow. HealthRiskCategory AQHI Low 1 2 3 Moderate 4 5 6 High 7 VeryHigh 8 9 10 Serious 10+ WhenthehealthriskcategoryisattheLoworModeratelevels,peoplecancontinuetoenjoytheirusualactivities. WhenthecategoryreachesHigh,children,theelderlyandpeoplewithheartorrespiratoryillnessesshouldreduceoutdoorphysicalexertion. WhenthecategoryreachesVeryHighorSerious,thegeneralpublicshouldalsoreduceoravoidoutdoorphysicalexertion.Formoredetails,pleaserefertoourhealthadviceontheAQHIwebsite.Moreonhealthadvice MonitoringStationsAirpollutantlevelsarecontinuouslymeasuredbytheEPD'sairqualitymonitoringnetwork,whichincludes15generaland3roadsidemonitoringstations. ThegeneralstationsarelocatedindifferentpartsofHongKongtocovervariouskindsoflanduseareas. Theyareusuallyatroofleveloffourtosixstoreyshigh. TheroadsidestationsarelocatedatstreetlevelinCausewayBay,MongKokandCentral. Allstationsaredesignedandoperatedtocomplywiththehighestinternationalstandardsthatcanefficientlyandaccuratelymeasuretheairpollutantdata.MapshowinglocationsofgeneralandroadsidemonitoringstationsHowtodeterminetheAQHImostrelevanttoyou DataandStatisticsDatacollectedfromthemonitoringstationsisrecordedandanalysedbytheEPDandturnedintousefulinformationforyouinthefollowingways. ThecurrentAQHIreadingsareavailable24hoursaday,sevendaysaweek. Thehealthriskcategoriesforecastisalsoavailabletoprovidealertstothepublicbeforetheonsetofhighhealthriskcategoriesduetopollutionepisodes.CurrentAQHIsandHealthRiskCategoriesforecastDownloadAirqualityHealthIndexMobileApplications TheAQHIreadingsateachmonitoringstationareavailableforthepast24hours.AQHIsforthepast24hours Thepollutantconcentrationsateachmonitoringstationareavailableforthepast24hours.Pollutantconcentrationforthepast24hours AQHIstatisticalsummariesareavailablebymonth.AQHImonthlysummaries AllhourlyAQHIrecordsinthepastareavailable.PastAQHIrecords Inadditiontotheaboveonlineresources,AQHIinformationisalsobroadcastedonradioandtelevision,andprintedinlocalnewspapers. YoucanalsocalltheAQHIHotlineat(852)28278541toobtainthelatestinformation. OtherInformationHereprovideslinkstothemonitoringbodiesofothercountriessothatyoucanlearnmoreaboutairpollutionproblemaroundtheworld,andwhatisbeingdoneaboutit.Airpollutioninformationinothercountries Foundthispagehelpful? Foundthispagehelpful? Yourfeedbackishighlyappreciated.(Optional) Yourfeedbackishighlyappreciated.(optional) Notice:ThisformisNOTintendedforhandlingenquiriesorcomplaints.Forassistance,pleasecontactthe24-hourHelpdeskat(852)[email protected]. Thankyou.YourinputwillonlybeusedtoimproveGovHK. Lastrevisiondate:October2021 RelatedContent TopOnlineServices LodgePollutionComplaints ApplyforEnvironmentalPermitsandLicences HongKongSecond-handExchange SearchforAirQualityData SearchforBeachWaterQualityData SearchforLocationsofRecyclableCollectionPoints More TopOnlineServices >