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Chennai Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-09-30 03:28:18 AM (Local Time)

location image
Live AQI
102(AQI-US)
Air Quality is
Poor
pm10 :  47 µg/m³
PM2.5 :  35 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi poor level.webp in Chennai


Map

Chennai

Major Air Pollutants

Chennai

AQI Graph

Historical Air Quality Data

Chennai

Chennai
AQI
.
29-09-2025Time30-09-2025
66
Min.at 5:04 AM on 29th Sep
106
Max.at 2:04 AM on 30th Sep

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
85AQI
2%
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.(%)
Moderate
99
35
58
23
83
Moderate
96
33
54
28
91
Moderate
84
27
66
27
98
Poor
119
43
54
28
80
Moderate
94
32
39
25
91
Moderate
92
31
33
28
87
Moderate
79
24
57
26
83
Moderate
88
29
31
29
87
Poor
122
44
48
26
91
Moderate
96
33
38
27
86
Poor
107
38
43
27
92
Moderate
94
32
34
23
84
Moderate
75
22
33
24
86
Moderate
94
32
40
28
87
Poor
139
51
54
25
81
Poor
105
37
40
28
88
Poor
107
38
47
26
89
Moderate
97
34
54
26
87
Moderate
96
33
33
24
81
Moderate
97
34
58
23
84
Poor
102
36
51
25
81
Poor
119
43
61
24
80
Poor
134
49
64
28
91

India's Metro Cities

Air Quality Index

Health Advice For People Living In

Chennai

1Cigarettes per day

Cigarette
Weekly 7 Cigarettes
Monthly 30 Cigarettes

Breathing the air in this location is as harmful as smoking 1 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

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild when AQI is Poor (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

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

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aqi air quality app for Chennai
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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.


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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 102 (Poor). This was last updated 2025-09-30 03:28:18 AM (Local Time).

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

The best AQI level was 66 (Moderate) at 5:04 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 106 (Poor) at 2:04 AM, Sep 30, 2025 (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 106 at 2:04 AM, Sep 30, 2025 (Local Time), lowest 66 at 5:04 AM (Local Time).

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

Current AQI levels are unhealthy for Sensitive individuals, they should reduce prolonged or heavy outdoor exertion.