Chennai: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast
5 weather warnings in effect for India
Pollution and air quality forecast for Chennai.
Today is Thursday, August 27, 2026.
The following air pollution values have been recorded for Chennai:
- particulate matter (PM2.5) dust - 17 (Moderate)
- particulate matter (PM10) suspended dust - 23 (Moderate)
- ozone (O3) - 35 (Good)
- nitrogen dioxide (NO2) - 17 (Good)
- sulfur dioxide (SO2) - 10 (Good)
- carbon monoxide (CO) - 328 (Good)
What is the air quality in Chennai today? Is the air polluted in Chennai?. Is there smog?
Today (Thursday, August 27, 2026) air quality is moderate in Chennai.
Some pollutants in Chennai may slightly affect very few hypersensitive individuals. Air pollutants in Chennai may cause minor breathing discomfort to sensitive people.
What is the current level of PM2.5 in Chennai? (particulate matter (PM2.5) dust)
Today's PM2.5 level is:
17 (Moderate)
For comparison, the highest level of PM2.5 in Chennai in the last 7 days was: 20 (Thursday, August 27, 2026) and the lowest: 15 (Monday, August 24, 2026).
The highest PM2.5 values were recorded: 597 (December 2018).
The lowest level of particulate matter PM2.5 pollution occurs in month: May (9.1).
What is the level of PM10 today in Chennai? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Chennai is:
23 (Moderate)
How is the O3 level today in Chennai? (ozone (O3))
35 (Good)
How high is the level of NO2? (nitrogen dioxide (NO2))
17 (Good)
What is the level of SO2 pollution? (sulfur dioxide (SO2))
10 (Good)
How high is the CO level? (carbon monoxide (CO))
328 (Good)
Current data Thursday, August 27, 2026 at 6:30 AM
PM2,5 17 (Moderate)
PM10 23 (Moderate)
O3 35 (Good)
NO2 17 (Good)
SO2 10 (Good)
CO 328 (Good)
Data on air pollution from recent days in Chennai
index
2026-08-27
2026-08-26
2026-08-25
2026-08-24
2026-08-23
2026-08-22
2026-08-21
2026-08-20
pm25
20
Moderate
17
Moderate
17
Moderate
15
Moderate
17
Moderate
18
Moderate
18
Moderate
18
Moderate
pm10
31
Moderate
24
Moderate
22
Moderate
20
Moderate
24
Moderate
24
Moderate
25
Moderate
27
Moderate
o3
85
Moderate
76
Moderate
67
Good
61
Good
86
Moderate
88
Moderate
88
Moderate
98
Moderate
no2
12
Good
14
Good
15
Good
14
Good
9
Good
12
Good
12
Good
10
Good
so2
10
Good
11
Good
11
Good
11
Good
9
Good
9
Good
9
Good
11
Good
co
303
Good
305
Good
360
Good
314
Good
228
Good
268
Good
283
Good
279
Good
data source »
Air pollution in Chennai from October 2018 to May 2020
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-11
2019-10
2019-09
2019-08
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
2017-08
2017-07
2017-06
2017-05
2017-04
2017-03
2017-02
2017-01
2016-12
2016-11
2016-10
2016-09
2016-08
2016-07
2016-06
2016-05
2016-04
2016-03
2016-02
2016-01
2015-12
2018-11
2018-10
pm25
9.1 (Good)
9.6 (Good)
24 (Moderate)
32 (Moderate)
32 (Moderate)
30 (Moderate)
39 (Unhealthy for Sensitive Groups)
20 (Moderate)
19 (Moderate)
17 (Moderate)
36 (Unhealthy for Sensitive Groups)
30 (Moderate)
25 (Moderate)
15 (Moderate)
22 (Moderate)
34 (Moderate)
205 (Very bad Hazardous)
597 (Very bad Hazardous)
35 (Moderate)
60 (Unhealthy)
45 (Unhealthy for Sensitive Groups)
105 (Very Unhealthy)
66 (Unhealthy)
40 (Unhealthy for Sensitive Groups)
201 (Very bad Hazardous)
329 (Very bad Hazardous)
84 (Very Unhealthy)
54 (Unhealthy for Sensitive Groups)
52 (Unhealthy for Sensitive Groups)
65 (Unhealthy)
18 (Moderate)
23 (Moderate)
27 (Moderate)
24 (Moderate)
40 (Unhealthy for Sensitive Groups)
31 (Moderate)
29 (Moderate)
32 (Moderate)
47 (Unhealthy for Sensitive Groups)
54 (Unhealthy for Sensitive Groups)
50 (Unhealthy for Sensitive Groups)
50 (Unhealthy for Sensitive Groups)
30 (Moderate)
37 (Unhealthy for Sensitive Groups)
33 (Moderate)
37 (Unhealthy for Sensitive Groups)
18 (Moderate)
20 (Moderate)
26 (Moderate)
36 (Unhealthy for Sensitive Groups)
49 (Unhealthy for Sensitive Groups)
63 (Unhealthy)
41 (Unhealthy for Sensitive Groups)
34 (Moderate)
no2
1.7 (Good)
1.6 (Good)
3.8 (Good)
5.7 (Good)
4.9 (Good)
8.8 (Good)
16 (Good)
18 (Good)
17 (Good)
17 (Good)
23 (Good)
27 (Good)
8.3 (Good)
7.6 (Good)
- (Good)
11 (Good)
- (Good)
- (Good)
15 (Good)
15 (Good)
- (Good)
- (Good)
46 (Moderate)
33 (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
9.8 (Good)
13 (Good)
so2
4 (Good)
7.4 (Good)
6.4 (Good)
6 (Good)
5.3 (Good)
4.9 (Good)
4.5 (Good)
4.7 (Good)
3.6 (Good)
3.8 (Good)
3.7 (Good)
4.1 (Good)
4.7 (Good)
4.6 (Good)
- (Good)
4.5 (Good)
- (Good)
- (Good)
4.2 (Good)
4.3 (Good)
- (Good)
- (Good)
9.1 (Good)
4.1 (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
4.2 (Good)
6.2 (Good)
co
744 (Good)
747 (Good)
665 (Good)
875 (Good)
845 (Good)
454 (Good)
525 (Good)
793 (Good)
724 (Good)
724 (Good)
767 (Good)
1 (Good)
826 (Good)
843 (Good)
- (Good)
1 (Good)
- (Good)
- (Good)
659 (Good)
648 (Good)
- (Good)
- (Good)
925 (Good)
779 (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
966 (Good)
779 (Good)
o3
12 (Good)
11 (Good)
5.6 (Good)
20 (Good)
12 (Good)
23 (Good)
17 (Good)
15 (Good)
15 (Good)
20 (Good)
34 (Good)
41 (Good)
18 (Good)
16 (Good)
- (Good)
75 (Moderate)
- (Good)
- (Good)
31 (Good)
9.2 (Good)
- (Good)
- (Good)
34 (Good)
26 (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
21 (Good)
32 (Good)
data source »
Chennai
Thursday, August 27, 2026 at 6:30 AM
PM2,5 17 (Moderate)
particulate matter (PM2.5) dust
PM10 23 (Moderate)
particulate matter (PM10) suspended dust
O3 35 (Good)
ozone (O3)
NO2 17 (Good)
nitrogen dioxide (NO2)
SO2 9.5 (Good)
sulfur dioxide (SO2)
CO 328 (Good)
carbon monoxide (CO)
Chennai
index
2026-08-20
2026-08-21
2026-08-22
2026-08-23
2026-08-24
2026-08-25
2026-08-26
2026-08-27
pm25
18
18
18
17
15
17
17
20
pm10
27
25
24
24
20
22
24
31
o3
98
88
88
86
61
67
76
85
no2
10
12
12
9.4
14
15
14
12
so2
11
9.1
9.1
9.4
11
11
11
10
co
279
283
268
228
314
360
305
303
US Diplomatic Post: Chennai
2015-12 2020-05
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-11
2019-10
2019-09
2019-08
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
2017-08
2017-07
2017-06
2017-05
2017-04
2017-03
2017-02
2017-01
2016-12
2016-11
2016-10
2016-09
2016-08
2016-07
2016-06
2016-05
2016-04
2016-03
2016-02
2016-01
2015-12
pm25
9.5
8.9
22
31
35
35
48
14
21
19
22
19
24
15
22
35
205
597
43
94
45
105
95
46
201
329
84
54
52
65
18
23
27
24
40
31
29
32
47
54
50
50
30
37
33
37
18
20
26
36
49
63
Velachery Res. Area, Chennai - CPCB
2018-04 2020-05
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-11
2019-10
2019-09
2019-08
2019-07
2019-06
2019-05
2019-04
2019-02
2018-11
2018-10
2018-09
2018-08
2018-05
2018-04
pm25
8.7
10
27
32
30
25
30
26
16
14
49
41
26
16
34
41
34
26
26
37
34
no2
1.7
1.6
3.8
5.7
4.9
8.8
16
18
17
17
23
27
8.3
7.6
11
9.8
13
15
15
46
33
so2
4
7.4
6.4
6
5.3
4.9
4.5
4.7
3.6
3.8
3.7
4.1
4.7
4.6
4.5
4.2
6.2
4.2
4.3
9.1
4.1
co
744
747
665
875
845
454
525
793
724
724
767
1
826
843
1
966
779
659
648
925
779
o3
12
11
5.6
20
12
23
17
15
15
20
34
41
18
16
75
21
32
31
9.2
34
26
* Pollution data source:
https://openaq.org
(StateAir_Chennai, caaqm)
The data is licensed under CC-By 4.0
🌦️ Weather · 16-day Forecast — Chennai
PM2,5 17 (Moderate)
PM10 23 (Moderate)
O3 35 (Good)
NO2 17 (Good)
SO2 10 (Good)
CO 328 (Good)
Data on air pollution from recent days in Chennai
| index | 2026-08-27 | 2026-08-26 | 2026-08-25 | 2026-08-24 | 2026-08-23 | 2026-08-22 | 2026-08-21 | 2026-08-20 |
|---|---|---|---|---|---|---|---|---|
| pm25 | 20 Moderate |
17 Moderate |
17 Moderate |
15 Moderate |
17 Moderate |
18 Moderate |
18 Moderate |
18 Moderate |
| pm10 | 31 Moderate |
24 Moderate |
22 Moderate |
20 Moderate |
24 Moderate |
24 Moderate |
25 Moderate |
27 Moderate |
| o3 | 85 Moderate |
76 Moderate |
67 Good |
61 Good |
86 Moderate |
88 Moderate |
88 Moderate |
98 Moderate |
| no2 | 12 Good |
14 Good |
15 Good |
14 Good |
9 Good |
12 Good |
12 Good |
10 Good |
| so2 | 10 Good |
11 Good |
11 Good |
11 Good |
9 Good |
9 Good |
9 Good |
11 Good |
| co | 303 Good |
305 Good |
360 Good |
314 Good |
228 Good |
268 Good |
283 Good |
279 Good |
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-12 | 2018-11 | 2018-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm25 | 9.1 (Good) | 9.6 (Good) | 24 (Moderate) | 32 (Moderate) | 32 (Moderate) | 30 (Moderate) | 39 (Unhealthy for Sensitive Groups) | 20 (Moderate) | 19 (Moderate) | 17 (Moderate) | 36 (Unhealthy for Sensitive Groups) | 30 (Moderate) | 25 (Moderate) | 15 (Moderate) | 22 (Moderate) | 34 (Moderate) | 205 (Very bad Hazardous) | 597 (Very bad Hazardous) | 35 (Moderate) | 60 (Unhealthy) | 45 (Unhealthy for Sensitive Groups) | 105 (Very Unhealthy) | 66 (Unhealthy) | 40 (Unhealthy for Sensitive Groups) | 201 (Very bad Hazardous) | 329 (Very bad Hazardous) | 84 (Very Unhealthy) | 54 (Unhealthy for Sensitive Groups) | 52 (Unhealthy for Sensitive Groups) | 65 (Unhealthy) | 18 (Moderate) | 23 (Moderate) | 27 (Moderate) | 24 (Moderate) | 40 (Unhealthy for Sensitive Groups) | 31 (Moderate) | 29 (Moderate) | 32 (Moderate) | 47 (Unhealthy for Sensitive Groups) | 54 (Unhealthy for Sensitive Groups) | 50 (Unhealthy for Sensitive Groups) | 50 (Unhealthy for Sensitive Groups) | 30 (Moderate) | 37 (Unhealthy for Sensitive Groups) | 33 (Moderate) | 37 (Unhealthy for Sensitive Groups) | 18 (Moderate) | 20 (Moderate) | 26 (Moderate) | 36 (Unhealthy for Sensitive Groups) | 49 (Unhealthy for Sensitive Groups) | 63 (Unhealthy) | 41 (Unhealthy for Sensitive Groups) | 34 (Moderate) |
| no2 | 1.7 (Good) | 1.6 (Good) | 3.8 (Good) | 5.7 (Good) | 4.9 (Good) | 8.8 (Good) | 16 (Good) | 18 (Good) | 17 (Good) | 17 (Good) | 23 (Good) | 27 (Good) | 8.3 (Good) | 7.6 (Good) | - (Good) | 11 (Good) | - (Good) | - (Good) | 15 (Good) | 15 (Good) | - (Good) | - (Good) | 46 (Moderate) | 33 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 9.8 (Good) | 13 (Good) |
| so2 | 4 (Good) | 7.4 (Good) | 6.4 (Good) | 6 (Good) | 5.3 (Good) | 4.9 (Good) | 4.5 (Good) | 4.7 (Good) | 3.6 (Good) | 3.8 (Good) | 3.7 (Good) | 4.1 (Good) | 4.7 (Good) | 4.6 (Good) | - (Good) | 4.5 (Good) | - (Good) | - (Good) | 4.2 (Good) | 4.3 (Good) | - (Good) | - (Good) | 9.1 (Good) | 4.1 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 4.2 (Good) | 6.2 (Good) |
| co | 744 (Good) | 747 (Good) | 665 (Good) | 875 (Good) | 845 (Good) | 454 (Good) | 525 (Good) | 793 (Good) | 724 (Good) | 724 (Good) | 767 (Good) | 1 (Good) | 826 (Good) | 843 (Good) | - (Good) | 1 (Good) | - (Good) | - (Good) | 659 (Good) | 648 (Good) | - (Good) | - (Good) | 925 (Good) | 779 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 966 (Good) | 779 (Good) |
| o3 | 12 (Good) | 11 (Good) | 5.6 (Good) | 20 (Good) | 12 (Good) | 23 (Good) | 17 (Good) | 15 (Good) | 15 (Good) | 20 (Good) | 34 (Good) | 41 (Good) | 18 (Good) | 16 (Good) | - (Good) | 75 (Moderate) | - (Good) | - (Good) | 31 (Good) | 9.2 (Good) | - (Good) | - (Good) | 34 (Good) | 26 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 21 (Good) | 32 (Good) |
PM2,5 17 (Moderate)
particulate matter (PM2.5) dustPM10 23 (Moderate)
particulate matter (PM10) suspended dustO3 35 (Good)
ozone (O3)NO2 17 (Good)
nitrogen dioxide (NO2)SO2 9.5 (Good)
sulfur dioxide (SO2)CO 328 (Good)
carbon monoxide (CO)Chennai
| index | 2026-08-20 | 2026-08-21 | 2026-08-22 | 2026-08-23 | 2026-08-24 | 2026-08-25 | 2026-08-26 | 2026-08-27 |
|---|---|---|---|---|---|---|---|---|
| pm25 | 18 | 18 | 18 | 17 | 15 | 17 | 17 | 20 |
| pm10 | 27 | 25 | 24 | 24 | 20 | 22 | 24 | 31 |
| o3 | 98 | 88 | 88 | 86 | 61 | 67 | 76 | 85 |
| no2 | 10 | 12 | 12 | 9.4 | 14 | 15 | 14 | 12 |
| so2 | 11 | 9.1 | 9.1 | 9.4 | 11 | 11 | 11 | 10 |
| co | 279 | 283 | 268 | 228 | 314 | 360 | 305 | 303 |
US Diplomatic Post: Chennai
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm25 | 9.5 | 8.9 | 22 | 31 | 35 | 35 | 48 | 14 | 21 | 19 | 22 | 19 | 24 | 15 | 22 | 35 | 205 | 597 | 43 | 94 | 45 | 105 | 95 | 46 | 201 | 329 | 84 | 54 | 52 | 65 | 18 | 23 | 27 | 24 | 40 | 31 | 29 | 32 | 47 | 54 | 50 | 50 | 30 | 37 | 33 | 37 | 18 | 20 | 26 | 36 | 49 | 63 |
Velachery Res. Area, Chennai - CPCB
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-02 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-05 | 2018-04 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm25 | 8.7 | 10 | 27 | 32 | 30 | 25 | 30 | 26 | 16 | 14 | 49 | 41 | 26 | 16 | 34 | 41 | 34 | 26 | 26 | 37 | 34 |
| no2 | 1.7 | 1.6 | 3.8 | 5.7 | 4.9 | 8.8 | 16 | 18 | 17 | 17 | 23 | 27 | 8.3 | 7.6 | 11 | 9.8 | 13 | 15 | 15 | 46 | 33 |
| so2 | 4 | 7.4 | 6.4 | 6 | 5.3 | 4.9 | 4.5 | 4.7 | 3.6 | 3.8 | 3.7 | 4.1 | 4.7 | 4.6 | 4.5 | 4.2 | 6.2 | 4.2 | 4.3 | 9.1 | 4.1 |
| co | 744 | 747 | 665 | 875 | 845 | 454 | 525 | 793 | 724 | 724 | 767 | 1 | 826 | 843 | 1 | 966 | 779 | 659 | 648 | 925 | 779 |
| o3 | 12 | 11 | 5.6 | 20 | 12 | 23 | 17 | 15 | 15 | 20 | 34 | 41 | 18 | 16 | 75 | 21 | 32 | 31 | 9.2 | 34 | 26 |
16-day weather forecast for Chennai: today around 34°C (rain), lows near 27°C. Daily temperature and conditions, updated every day. Strong wind (about 28 km/h) is actively clearing smog and dust away.
☀️ UV Index · 16-day Forecast — Chennai
The UV index in Chennai today is 8.9 (very high) — unprotected fair skin can burn in about 20 minutes.
📍 Air quality in nearby cities
Live PM2.5 around Chennai — compare nearby locations.
- JaffnaSri Lanka 6 µg/m³
- TrincomaleeSri Lanka 2 µg/m³
- Mumbai 13 µg/m³
- Delhi 76 µg/m³
- Bengaluru Urban 4 µg/m³
- Kolkata 35 µg/m³
- Ahmedabad 14 µg/m³
- Hyderabad 12 µg/m³
Frequently asked questions
Is the air safe to breathe in Chennai today?
The current average PM2.5 across Chennai is about 17 µg/m³, rated “Moderate”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.
What is the current PM2.5 level in Chennai?
Right now PM2.5 in Chennai averages about 17 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.
Which day last week had the worst air in Chennai?
Over the past week, the highest daily PM2.5 in Chennai was recorded on Thursday, August 27 (about 20 µg/m³).
What is the UV index in Chennai today?
The UV index in Chennai today is 8.9 (very high) — unprotected fair skin can burn in about 20 minutes.
Does today's wind help disperse smog in Chennai?
Strong wind (about 28 km/h) is actively clearing smog and dust away.
How is air quality measured?
Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.