Zhengzhou Air Quality Index

Good(Class B)
(May 24th,2017 ,05:00:00 AM(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: 58.89μg/m3,24-hour PM2.5: 29.15μg/m3.
1-hour PM2.5 ranks #348 in China by ascending,total 367 cities.
1-hour PM10: 135μg/m3,24-hour PM10: 67.62μg/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 11229215119255128Lightly Polluted
Site 293571351.110728-10Good
Site 36025701547920Good
Site 497481440.9922233Good
Site 5844711718224-2Good
Site 695451391.488332332Good
Site 7123671951.2831876Lightly Polluted
Site 8108811411975175Lightly Polluted
Site 992681231.2101381429Good

Zhengzhou AQI Ranking

Zhengzhou AQI ranks #350 in China(total 367),defeat 5% cities.

Last 7 days rankings and AQI data of Zhengzhou City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2017-05-23 #3449323490.7962513170151Good
2017-05-22 #360170641181.0273016259234Moderately Polluted
2017-05-21 #327140581151.0444915218204Lightly Polluted
2017-05-20 #291119461010.8855016207180Lightly Polluted
2017-05-19 #322139641250.9864521246203Lightly Polluted
2017-05-18 #239117661580.9296429195178Lightly Polluted
2017-05-17 #304136511390.886026222199Lightly 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.