Muthtamil Nagar, Chennai, Tamil Nadu, India Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Muthtamil Nagar, Chennai, Tamil Nadu, India
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 79 of Moderate air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Oct - 7th Oct 2025
Muthtamil Nagar, Chennai, Tamil Nadu, India
5 AM6th Oct 2025
6 PM
4 AM7th Oct 2025
100AQI
54AQI
149AQI
109AQI
In the last 24 hours,
Muthtamil Nagar's AQI reached its highest point of 149 at 10 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 6th Oct and 7th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Muthtamil Nagar, Chennai, Tamil Nadu, India
30°C28/33°C
30°C28/33°C
30°C28/33°C
30°C28/33°C
30°C27/33°C
30°C28/32°C
30°C28/32°C
29°C28/32°C
30°C28/33°C
30°C28/32°C
30°C28/32°C
29°C28/32°C
29°C25/33°C
27°C25/29°C
29°C25/32°C
29°C27/32°C
30°C27/33°C
31°C28/34°C
30°C28/34°C
30°C28/33°C
30°C27/34°C
30°C27/34°C
31°C27/35°C
29°C28/32°C
29°C27/31°C
29°C26/33°C
29°C27/33°C
30°C27/34°C
29°C27/32°C
30°C27/33°C
--°C/°C
77AQI
72AQI
91AQI
78AQI
2025 Days Vs Air Quality
Muthtamil Nagar, Chennai, Tamil Nadu, India
80%
223
20%
55
0.3%
1
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 280 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Muthtamil Nagar, Chennai, Tamil Nadu, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
116AQI
124AQI
130AQI
137AQI
143AQI
149AQI
141AQI
148AQI
143AQI
143AQI
114AQI
119AQI
116AQI
94AQI
92AQI
127AQI
138AQI
124AQI
109AQI
131AQI
127AQI
136AQI
115AQI
109AQI
107AQI
104AQI
107AQI
131AQI
129AQI
125AQI
100AQI
90AQI
87AQI
89AQI
103AQI
121AQI
122AQI
136AQI
127AQI
134AQI
153AQI
117AQI
121AQI
104AQI
103AQI
95AQI
104AQI
118AQI
123AQI
119AQI
111AQI
97AQI
97AQI
95AQI
98AQI
107AQI
110AQI
106AQI
106AQI
87AQI
83AQI
85AQI
85AQI
84AQI
104AQI
118AQI
106AQI
92AQI
96AQI
98AQI
94AQI
91AQI
96AQI
64AQI
69AQI
101AQI
91AQI
91AQI
92AQI
84AQI
81AQI
75AQI
84AQI
87AQI
92AQI
108AQI
99AQI
106AQI
91AQI
96AQI
99AQI
86AQI
73AQI
78AQI
70AQI
68AQI
66AQI
70AQI
65AQI
78AQI
82AQI
90AQI
86AQI
79AQI
71AQI
74AQI
75AQI
73AQI
83AQI
82AQI
85AQI
79AQI
76AQI
73AQI
75AQI
73AQI
65AQI
60AQI
61AQI
62AQI
69AQI
70AQI
80AQI
78AQI
82AQI
80AQI
83AQI
91AQI
92AQI
96AQI
94AQI
95AQI
99AQI
95AQI
97AQI
94AQI
94AQI
87AQI
78AQI
80AQI
68AQI
80AQI
78AQI
72AQI
71AQI
67AQI
75AQI
86AQI
76AQI
84AQI
86AQI
83AQI
85AQI
81AQI
83AQI
88AQI
95AQI
95AQI
86AQI
88AQI
90AQI
92AQI
91AQI
85AQI
79AQI
75AQI
73AQI
76AQI
75AQI
75AQI
73AQI
72AQI
73AQI
71AQI
71AQI
71AQI
69AQI
69AQI
66AQI
65AQI
64AQI
66AQI
70AQI
66AQI
65AQI
65AQI
64AQI
65AQI
70AQI
70AQI
72AQI
75AQI
75AQI
75AQI
73AQI
73AQI
72AQI
72AQI
71AQI
72AQI
70AQI
72AQI
71AQI
69AQI
71AQI
70AQI
67AQI
67AQI
65AQI
65AQI
66AQI
68AQI
68AQI
73AQI
73AQI
70AQI
66AQI
70AQI
72AQI
73AQI
74AQI
72AQI
67AQI
69AQI
64AQI
63AQI
61AQI
61AQI
58AQI
59AQI
59AQI
61AQI
66AQI
68AQI
64AQI
66AQI
64AQI
65AQI
66AQI
66AQI
69AQI
68AQI
67AQI
68AQI
67AQI
67AQI
68AQI
65AQI
71AQI
71AQI
71AQI
78AQI
80AQI
77AQI
81AQI
83AQI
79AQI
77AQI
74AQI
69AQI
69AQI
68AQI
72AQI
74AQI
75AQI
76AQI
76AQI
80AQI
70AQI
73AQI
67AQI
73AQI
83AQI
99AQI
94AQI
109AQI
89AQI
108AQI
79AQI
123AQI
110AQI
91AQI
75AQI
83AQI
79AQI
69AQI
67AQI
73AQI
96AQI
No. of days
202586AQI
Highest AQI recorded in
January123AQI
Lowest AQI recorded in
August67AQI
202477AQI
Highest AQI recorded in
January126AQI
Lowest AQI recorded in
August44AQI
202387AQI
Highest AQI recorded in
December132AQI
Lowest AQI recorded in
September63AQI
202281AQI
Highest AQI recorded in
October102AQI
Lowest AQI recorded in
July53AQI
202160AQI
Highest AQI recorded in
December105AQI
Lowest AQI recorded in
January17AQI
202055AQI
Highest AQI recorded in
February139AQI
Lowest AQI recorded in
July5AQI
Most & Least Polluted Years Over the Last 6 Years
Muthtamil Nagar's annual 2025 AQI (86) shows an average percentage change of 22.9% (worsened AQI) compared to previous years: 2020 (55), 2021 (60), 2022 (81), 2023 (87), 2024 (77).