Changsha Air Quality Index

Good(Class B)
(November 18th,2017 ,05:00:00 PM(UTC+8) Published)
Lightly Polluted
Moderately Polluted
Heavily Polluted
Severely Polluted
Main Air Pollutants:PM2.5
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.

Changsha PM2.5

1-hour PM2.5: 50.67μg/m3,24-hour PM2.5: 46.31μg/m3.
1-hour PM2.5 ranks #342 in China by ascending,total 367 cities.
1-hour PM10: 58.25μg/m3,24-hour PM10: 37.53μg/m3.

All Air Monitoring Sites Of Changsha 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)
10 Monitoring SitesAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
Site 16950661.14392420Good
Site 26446660.85492525Good
Site 3735356137102924Good
Site 45942590.84392723Good
Site 56950600.74183330Good
Site 67353610.95482120Good
Site 76950520.94761414Good
Site 87353-0.65482019Good
Site 98059-0.94951213Good
Site 1046-46-3593429Excellent

Changsha AQI Ranking

Changsha AQI ranks #323 in China(total 367),defeat 12% cities.

Last 7 days rankings and AQI data of Changsha City

Date/AQI rankingAQIPM2.5PM10CONO2SO203-1hO3-8hLevel
2017-11-17 #574426241.1513462117Excellent
2017-11-16 #3371501141271.2948101712Lightly Polluted
2017-11-15 #338146111801.05550113524Lightly Polluted
2017-11-14 #32111486890.8293892828Lightly Polluted
2017-11-13 #765135270.8283472517Good
2017-11-12 #3039067790.73473535Good
2017-11-11 #32990671070.76938124747Good
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.