Zhengzhou Air Quality Index

Good(Class B)
(January 20th,2017 ,11:00:00 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: 52.78μg/m3,24-hour PM2.5: 26.23μg/m3.
1-hour PM2.5 ranks #191 in China by ascending,total 367 cities.
1-hour PM10: 122.11μg/m3,24-hour PM10: 83.27μg/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 189531281.278411436Good
Site 28958128168262027Good
Site 385631181.451131636Good
Site 487491231.658342346Good
Site 57349961.248292639Good
Site 693531350.775412138Good
Site 7106661611.47121730Lightly Polluted
Site 87644102170332939Good
Site 979401081.362323042Good

Zhengzhou AQI Ranking

Zhengzhou AQI ranks #221 in China(total 367),defeat 40% cities.

Last 7 days rankings and AQI data of Zhengzhou City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2017-01-19 #3011571192201.5145268771Moderately Polluted
2017-01-18 #3543412913592.83285413729Severely Polluted
2017-01-17 #3633753244172.84894321612Severely Polluted
2017-01-16 #3101541181671.52571333933Moderately Polluted
2017-01-15 #26092691211.37367355444Good
2017-01-14 #23183611081.31565285744Good
2017-01-13 #23587651231.26859426451Good
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.