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Chennai Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Tamil Nadu

Last Updated: 2025-10-18 10:59:44 PM (Local Time)

location image
Live AQI
167(AQI-US)
Air Quality is
Unhealthy
pm10 :  124 µg/m³
PM2.5 :  85 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi unhealthy level.webp in Chennai
mist

27 °C

Mist
Humidity
Humidity89 %

Wind Speed
Wind Speed12 km/h

UV Index
UV Index0
Last Updated: 2025-10-18 10:59:44 PM (Local Time)


Map

Chennai

Major Air Pollutants

Chennai

AQI Graph

Historical Air Quality Data

Chennai

Chennai
AQI
.
17-10-2025Time18-10-2025
83
Min.at 4:04 AM on 18th Oct
187
Max.at 9:04 PM on 18th Oct

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Chennai, Tamil Nadu, India

Year
.
AQI


Annual AQI Trends

2020
86AQI
2021
81AQI
-6%
Fall
2022
85AQI
5%
Rise
2023
90AQI
6%
Rise
2024
83AQI
-8%
Fall
2025
86AQI
4%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
0%
No Change

Most & Least Polluted Months

Most PollutedJanuary, 2020133AQI

Least PollutedMay, 202153AQI

* This data analysis is from year 2020 - 2025

Chennai's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Unhealthy
191
112
132
27
89
Unhealthy
193
115
123
27
89
Unhealthy
193
115
165
27
89
Unhealthy
160
68
165
27
89
Poor
134
49
112
27
89
Unhealthy
158
65
140
27
89
Moderate
66
17
48
27
89
Poor
137
50
74
27
89
Poor
119
43
63
27
89
Unhealthy
165
76
118
27
89
Unhealthy
161
70
75
27
89
Poor
122
44
93
27
89
Moderate
86
28
76
27
89
Unhealthy
184
103
116
25.7
45
Unhealthy
163
73
118
27
89
Unhealthy
176
91
108
27
89
Unhealthy
160
68
150
27
89
Unhealthy
159
67
70
27
89
Unhealthy
158
66
136
27
89
Unhealthy
154
60
120
27
89
Severe
272
197
226
26.2
45
Severe
228
153
178
27
89
Severe
298
223
258
26.1
45
Severe
211
136
169
27
89
Unhealthy
177
92
115
27
89
Poor
112
40
75
27
89

India's Metro Cities

Air Quality Index

Health Advice For People Living In

Chennai

1.9Cigarettes per day

Cigarette
Weekly 13.2 Cigarettes
Monthly 57 Cigarettes

Breathing the air in this location is as harmful as smoking 1.9 cigarettes a day.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust


Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Chennai

  • asthma due to air pollution in ChennaiAsthma
  • heart due to air pollution in ChennaiHeart Issues
  • allergy due to air pollution in ChennaiAllergies
  • sinus due to air pollution in ChennaiSinus
  • flu due to air pollution in ChennaiCold/Flu
  • copd due to air pollution in ChennaiChronic (COPD)
asthma due to air pollution in Chennai

High Chances of Asthma

Asthma

Risk of Asthma symptoms is High when AQI is Unhealthy (150-301)

Severe symptoms including intense wheezing, severe shortness of breath, significant chest tightness, and persistent coughing that may disrupt daily activities.

Do's :

  • Avoid going outside and keep windows closed to reduce exposure to pollutants.

  • Take prescribed medications as directed by your healthcare provider.

  • Maintain clean indoor air with air purifiers, especially in bedrooms and living areas.

Don'ts :

  • Smoke or expose yourself to secondhand smoke.

  • Engage in physical exertion outdoors.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

India

Analyze the real-time most air polluted cities in the country.

Chennai's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for Chennai
Mobile App

Empower Your Decisions with Reliable Data

Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.


Personalized health advice as per current AQI.

Personalized health advice as per current AQI.


Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.


Connect and control your air quality devices.

Connect and control your air quality devices.


Air Quality FAQs

at Chennai

Frequently Asked Questions About Air Quality

What is the current AQI level in Chennai?

The current real-time AQI level in Chennai is 167 (Unhealthy) due to recent rainfall by 0.06mm/hr. This was last updated 2025-10-18 10:59:44 PM (Local Time).

When was the best AQI level in Chennai in the last 24 hours?

The best AQI level was 83 (Moderate) at 4:04 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Chennai in the last 24 hours?

The worst AQI level was 187 (Unhealthy) at 9:04 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Chennai during last 24 hours?

The AQI levels in Chennai have been fluctuating throughout the last 24 hours. The levels have increased by highest 187 at 9:04 PM (Local Time), lowest 83 at 4:04 AM (Local Time).

What actions are recommended as per the current AQI level in Chennai?

Current AQI levels are unhealthy for everyone. It's advised to limit outdoor activities and consider using air purifiers indoors.