Zhengzhou Air Quality Index

Good(Class B)
(September 21st,2018 ,12:00:00 PM(UTC+8) Published)
Lightly Polluted
Moderately Polluted
Heavily Polluted
Severely Polluted
Main Air Pollutants:PM10
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: 20.78μg/m3,24-hour PM2.5: 31.89μg/m3.
1-hour PM2.5 ranks #186 in China by ascending,total 367 cities.
1-hour PM10: 69.78μg/m3,24-hour PM10: 74.27μg/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 15515590.9221310244Good
Site 26023701.1251310453Good
Site 35920670.8151010653Good
Site 46722841.138169742Good
Site 56319751.243198337Good
Site 66122711.3391610153Good
Site 75826661.328169949Good
Site 86020701.4281610748Good
Site 95820660.9221410149Good

Zhengzhou AQI Ranking

Zhengzhou AQI ranks #273 in China(total 367),defeat 26% cities.

Last 7 days rankings and AQI data of Zhengzhou City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2018-09-20 #2886832631.7045484032Good
2018-09-19 #2025119281.824176449Good
2018-09-18 #2185233531.0193687777Good
2018-09-17 #2425631611.0324011104104Good
2018-09-16 #1664421431.0073597559Excellent
2018-09-15 #2576643771.25652107254Good
2018-09-14 #2125925460.6984768169Good
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.