Chennai AQI
Current Location
Sector 129, Noida, Uttar Pradesh
Severe
231
PM1.0: 91.8 µg/m³
PM2.5: 55.8 µg/m³
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Good0 - 50
-
Moderate51 - 100
-
Poor101 - 150
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Unhealthy151 - 200
-
Severe201 - 300
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Hazardous300+
Last 7 Days AQI
Min. 23.25
On Dec 01 at 3:30 AM
Max. 122
On Dec 05 at 4:30 AM
Major Air Pollutants
Particulate Matter (PM2.5)
55.8 µg/M³
Particulate Matter (PM10)
91.8µg/M³
Carbon Monoxide (CO)
49.5ppb
Sulfur Dioxide (SO2)
11.2 Mb
Nitrogen Dioxide (NO2)
7ppb
Ozone (O3)
19.5ppb
Chennai Air Quality Index (AQI) Today
The Air Quality Index (AQI) in Chennai is 231, which means the air quality is Severe right now. The main pollutant today is PM10: 91.8, PM25: 55.8, NO2: 7, SO2: 11.2, O3: 19.5, CO: 49.5. If the AQI is above 100, sensitive groups like children or people with breathing issues should be careful and limit outdoor time. The AQI is regularly updated using real-time data from local monitoring stations, so you can always check the latest status for Chennai. If the AQI is “Poor” or higher, it’s best to reduce outdoor activities and use a mask if stepping out.
Most Polluted Cities
All Cities
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CityStatusAQIPM10PM25
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AgraPoor14111389
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AhmedabadPoor14211493
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AjmerPoor11112190
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AmaravatiUnhealthy200149215
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AmbalaUnhealthy200137207
-
AmritsarPoor12681100
-
AsansolSevere219121194
-
BallabgarhHazardous314220278
-
BareillyPoor11911889
-
BengaluruSevere2109769
-
BhiwaniSevere273133266
-
BhopalHazardous353170205
-
BhubaneswarHazardous364173204
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BulandshahrSevere240187227
-
ChandigarhHazardous304121193
-
ChennaiUnhealthy1749877
-
ChittoorUnhealthy186118177
-
CoimbatoreUnhealthy175108190
-
CuttackSevere207165187
-
DarbhangaUnhealthy15850114
-
DehradunSevere201106192
-
DelhiHazardous362229307
-
DhanbadUnhealthy166114133
-
FaridabadHazardous379146194
-
Gandhi NagarPoor14662112
-
GayaPoor14780118
-
GhaziabadHazardous383251317
-
Greater NoidaHazardous368244290
-
GurgaonHazardous343136224
-
GuwahatiSevere218114131
-
GwaliorSevere208132166
-
HisarPoor13013061
-
HyderabadSevere2647777
-
IndorePoor1347178
-
JabalpurPoor129117128
-
JaipurSevere210166193
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JalandharPoor145133132
-
JodhpurPoor11411792
-
KanpurHazardous36195105
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KarnalSevere224133232
-
KolkataHazardous381158215
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KotaUnhealthy195139192
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KurukshetraUnhealthy189153191
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LucknowHazardous400151190
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LudhianaPoor115126132
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MandideepSevere232201206
-
ManesarSevere243144251
-
MeerutHazardous375235262
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MoradabadUnhealthy176156177
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MumbaiSevere23910589
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MuzaffarnagarSevere237140246
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MuzaffarpurPoor11854116
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NagpurPoor146110104
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NashikUnhealthy167109105
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NoidaHazardous367245317
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PalwalPoor104110105
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PanchkulaPoor1250124
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PanipatSevere228171192
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PatialaPoor12913079
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PatnaHazardous580111151
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PithampurPoor120122141
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PrayagrajPoor126114124
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PuducherryModerate9988111
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PuneHazardous321141155
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RaipurPoor1069781
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Sawai MadhopurUnhealthy154160128
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SuratUnhealthy17012544
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ThiruvananthapuramModerate566579
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UdaipurPoor109110105
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UjjainPoor13279124
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VaranasiHazardous37310687
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VijayawadaModerate616347
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VisakhapatnamUnhealthy168144190
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KaithalPoor10810992
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BahadurgarhSevere213158232
Chennai AQI FAQs
What is AQI for Chennai today?
The Air Quality Index (AQI) in Chennai today is 231, which falls under the Severe
What does this AQI mean for health in Chennai?
An AQI of 231 means that the air is Severe. If it is Good or Satisfactory, normal outdoor activity is fine. For Moderate or higher, sensitive groups (children, elderly, people with heart/lung disease) should be cautious or limit outdoor time.
Which pollutant is highest today in Chennai?
Today, the most prominent pollutant in Chennai is PM10: 91.8, PM25: 55.8, NO2: 7, SO2: 11.2, O3: 19.5, CO: 49.5. This pollutant is the main reason for the AQI rating.
How often is the AQI updated for Chennai?
The AQI for Chennai is updated regularly—usually hourly or daily—by local monitoring stations. Data is provided in real time on official websites.
Where can I see detailed AQI history for Chennai?
Visit government sites like CPCB, or trusted live AQI websites for Chennai to view real-time and historical air quality data.
How does Chennai compare to other Indian cities today?
You can see city rankings and compare Chennai's AQI with other cities using real-time lists available on our site.
