Chiratidzo cheUnhu Hwemhepo (AQI) chinomiririra huwandu hwemhepo inosvibiswa. Chinoisa nhamba pachikero chiri pakati pe0 ne500 uye chinoshandiswa kubatsira kuona kuti hunhu hwemhepo hunotarisirwa kuti husave hwakanaka riini.
Zvichienderana nezvinodiwa nemutemo wehunhu hwemhepo yehurumende, AQI inosanganisira matanho matanhatu ekusvibisa mhepo: ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, uye saizi mbiri dzezvinhu zvidiki. MuBay Area, zvinhu zvidiki zvinogona kukonzera Spare the Air Alert iozone, pakati paKubvumbi naGumiguru, uye zvinhu zvidiki, pakati paMbudzi naKukadzi.
Nhamba yega yega yeAQI inoreva huwandu hwakati hwemhepo inosvibisa. Pahuwandu hwakawanda hwezvinhu zvitanhatu zvinosvibisa zvinomiririrwa nechati yeAQI, chiyero chehurumende chinoenderana nehuwandu hwe100. Kana huwandu hwechinhu chinosvibisa hukakwira kupfuura 100, hunhu hwemhepo hunogona kusabatsira veruzhinji.
0-50
Zvakanaka (G)
51-100
Pakati nepakati (M)
101-150
Hazvina Kunaka kuMapoka Ane Hutano Hwakanaka (USG)
151-200
Kusava neutano hwakanaka (U)
201-300
Hazvina Kunaka Kwazvo (VH)
301-500
Njodzi (H)
Kuverengwa kweAQI kuri pasi pe100 hakufanirwe kukanganisa hutano hweveruzhinji, kunyangwe kuverenga kuri pakati pe50 ne100 kunogona kukanganisa vanhu vane hanya zvakanyanya. Mazinga ari pamusoro pe300 haawanzoitika muUnited States.
Kana Air District ichigadzirira fungidziro yeAQI yezuva nezuva, inoyera huwandu hunotarisirwa hwechinhu chimwe nechimwe chezvinhu zvitanhatu zvikuru zvinosvibisa zviri mu index, inoshandura kuverenga kwacho kuita nhamba dzeAQI, uye inoshuma nhamba yepamusoro yeAQI panzvimbo yega yega yekushuma. Chiziviso chekuchengetedza mhepo chinodanwa kuBay Area apo hunhu hwemhepo hunotarisirwa kuti husave hwakanaka mune chero nzvimbo shanu dzekushuma dzedunhu.
Inobva ku https://www.sparetheair.org/understanding-air-quality/reading-the-air-quality-index
Nguva yekutumira: Gunyana-09-2022