Zhengzhou Air Quality Index

Good(Class B)
(April 23rd,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: 45.67μg/m3,24-hour PM2.5: 52.96μg/m3.
1-hour PM2.5 ranks #252 in China by ascending,total 367 cities.
1-hour PM10: 138.56μg/m3,24-hour PM10: 150.04μg/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 185381190.7422198129Good
Site 2112491730.7312096121Lightly Polluted
Site 3106381610.6852650133Lightly Polluted
Site 4102761490.84222100129Lightly Polluted
Site 582531140.72313118135Good
Site 6104431580.8331895124Lightly Polluted
Site 789381270.6301392122Good
Site 882441130.53321121139Good
Site 992321330.43414115142Good

Zhengzhou AQI Ranking

Zhengzhou AQI ranks #294 in China(total 367),defeat 20% cities.

Last 7 days rankings and AQI data of Zhengzhou City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2017-04-22 #30893481350.7855632153141Good
2017-04-21 #30983341150.563518129118Good
2017-04-20 #335101451520.5633829117110Lightly Polluted
2017-04-19 #354138642260.8334725137102Lightly Polluted
2017-04-18 #338134522160.5984219131121Lightly Polluted
2017-04-17 #309120441900.6533822139123Lightly Polluted
2017-04-16 #1066235740.95545207362Good
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.