Zhengzhou Air Quality Index

Good(Class B)
(July 23rd,2017 ,11:00:00 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.

Zhengzhou PM2.5

1-hour PM2.5: 23.11μg/m3,24-hour PM2.5: 58.25μg/m3.
1-hour PM2.5 ranks #157 in China by ascending,total 367 cities.
1-hour PM10: 70.56μg/m3,24-hour PM10: 117.42μg/m3.

All Air Monitoring Sites Of Zhengzhou 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)
9 Monitoring SitesAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
Site 15915671401065138Good
Site 277261030.942994149Good
Site 35538600.720548136Good
Site 46322750.93215690Good
Site 55526590.936481138Good
Site 66923870.928684120Good
Site 7662381139291123Good
Site 84715470.828790141Excellent
Site 95320560.826386124Good

Zhengzhou AQI Ranking

Zhengzhou AQI ranks #270 in China(total 367),defeat 26% cities.

Last 7 days rankings and AQI data of Zhengzhou City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2017-07-22 #2949341720.952275180151Good
2017-07-21 #34711834720.638286209179Lightly Polluted
2017-07-20 #32410733690.685266192167Lightly Polluted
2017-07-19 #3169834730.78337178157Good
2017-07-18 #2578326630.824417180139Good
2017-07-17 #2828837690.927327177145Good
2017-07-16 #34612337661.052257197185Lightly Polluted
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.