Xi'an Air Quality Index

Good(Class B)
(September 21st,2018 ,07:00:00 PM(UTC+8) Published)
Lightly Polluted
Moderately Polluted
Heavily Polluted
Severely Polluted
Main Air Pollutants:O3-8h
Health Implications:Air quality is acceptable,but maybe unhealthy to a small number of sensitive groups.
Suggestion:Unusually sensitive people should consider reducing prolonged or heavy exertion.

Xi'an PM2.5

1-hour PM2.5: 20μg/m3,24-hour PM2.5: 17.64μg/m3.
1-hour PM2.5 ranks #192 in China by ascending,total 367 cities.
1-hour PM10: 56.91μg/m3,24-hour PM10: 42.96μg/m3.

All Air Monitoring Sites Of Xi'an City(Real Time Data)

Indicators instruction:
AQI=Air Quality Index; PM2.5=Particles less than 2.5 micrometers in diameter; PM10=Particles between 2.5 and 10 micrometers in diameter; CO=carbon monoxide;NO2=nitrogen dioxide;SO2=sulfur dioxide;O3-1h=Ozone 1-hour average;O3-8h=Ozone 8-hour average;

Unit: μg/m3(CO=mg/m3)
13 Monitoring SitesAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
Site 14917490.7481291125Excellent
Site 25114511.12911152134Good
Site 356216116711106123Good
Site 4---0.952--120-
Site 55215531547102130Good
Site 64022400.868578107Excellent
Site 76727831.2511387117Good
Site 85120510.7399121133Good
Site 95320550.8347110121Good
Site 10632076150680117Good
Site 11---1.2--63123-
Site 125122520.9539130135Good
Site 135322550.955893118Good

Xi'an AQI Ranking

Xi'an AQI ranks #289 in China(total 367),defeat 21% cities.

Last 7 days rankings and AQI data of Xi'an City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2018-09-20 #2145515331.2154485030Good
2018-09-19 #1975113251.1734184235Good
2018-09-18 #2155222410.944284236Good
2018-09-17 #2445723400.8354583334Good
2018-09-16 #63349200.6812675547Excellent
2018-09-15 #863916390.7792983735Excellent
2018-09-14 #2466640730.9775298072Good
Note :03-1h, O3-8h to 24 hours maximum, 24-hour average of other pollutants, daily AQI based on "Ambient Air Quality Index (AQI) Technology (Trial)" (HJ633-2012) published in the daily AQI standard calculations.