Perungudi, 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
Perungudi, Chennai, Tamil Nadu, India
AQI Trends: Highest and Lowest
Same Day Analysis (12th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 119 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Oct - 13th Oct 2025
Perungudi, Chennai, Tamil Nadu, India
5 AM12th Oct 2025
6 PM
4 AM13th Oct 2025
157AQI
121AQI
134AQI
81AQI
In the last 24 hours,
Perungudi's AQI reached its highest point of 157 at 7 AM during the Day, while the lowest point, 81, was recorded at 4 AM during the Night between 12th Oct and 13th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Perungudi, Chennai, Tamil Nadu, India
30°C28/33°C
30°C27/33°C
30°C28/34°C
30°C28/33°C
30°C28/32°C
30°C27/33°C
29°C25/34°C
26°C25/28°C
29°C25/33°C
30°C26/33°C
30°C27/34°C
31°C27/34°C
31°C28/35°C
30°C28/34°C
30°C27/35°C
30°C27/35°C
31°C28/36°C
30°C27/33°C
30°C27/32°C
29°C26/34°C
29°C27/34°C
30°C27/34°C
29°C27/33°C
30°C27/33°C
29°C27/32°C
29°C27/32°C
29°C27/31°C
28°C26/31°C
29°C26/31°C
28°C26/31°C
--°C/°C
78AQI
68AQI
87AQI
75AQI
2025 Days Vs Air Quality
Perungudi, Chennai, Tamil Nadu, India
0.3%
1
77%
220
22%
63
0.3%
1
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 0.35%
Health Risk Level:
Extreme
In 2025, 0.35% of 286 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
Perungudi, Chennai, Tamil Nadu, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
113AQI
137AQI
141AQI
146AQI
149AQI
155AQI
148AQI
148AQI
144AQI
149AQI
128AQI
123AQI
119AQI
90AQI
83AQI
132AQI
141AQI
135AQI
112AQI
142AQI
138AQI
144AQI
114AQI
112AQI
110AQI
104AQI
122AQI
140AQI
138AQI
133AQI
102AQI
92AQI
89AQI
90AQI
107AQI
130AQI
143AQI
149AQI
142AQI
145AQI
148AQI
116AQI
123AQI
107AQI
104AQI
113AQI
97AQI
120AQI
124AQI
126AQI
118AQI
100AQI
105AQI
99AQI
98AQI
109AQI
114AQI
104AQI
104AQI
86AQI
77AQI
82AQI
76AQI
76AQI
104AQI
121AQI
110AQI
100AQI
93AQI
91AQI
84AQI
77AQI
89AQI
64AQI
66AQI
97AQI
88AQI
81AQI
83AQI
86AQI
86AQI
78AQI
84AQI
90AQI
97AQI
113AQI
100AQI
114AQI
93AQI
101AQI
105AQI
88AQI
70AQI
76AQI
65AQI
66AQI
65AQI
64AQI
66AQI
84AQI
88AQI
94AQI
98AQI
80AQI
71AQI
75AQI
75AQI
74AQI
90AQI
89AQI
84AQI
81AQI
75AQI
77AQI
73AQI
74AQI
65AQI
56AQI
59AQI
65AQI
68AQI
69AQI
82AQI
80AQI
81AQI
76AQI
78AQI
90AQI
91AQI
91AQI
98AQI
99AQI
100AQI
97AQI
105AQI
98AQI
92AQI
88AQI
76AQI
84AQI
70AQI
88AQI
83AQI
70AQI
68AQI
64AQI
76AQI
92AQI
75AQI
81AQI
84AQI
81AQI
85AQI
82AQI
83AQI
87AQI
92AQI
94AQI
82AQI
83AQI
82AQI
83AQI
84AQI
79AQI
71AQI
70AQI
69AQI
74AQI
72AQI
73AQI
74AQI
71AQI
72AQI
70AQI
70AQI
69AQI
66AQI
66AQI
64AQI
65AQI
65AQI
66AQI
69AQI
65AQI
64AQI
63AQI
62AQI
62AQI
67AQI
66AQI
70AQI
72AQI
71AQI
73AQI
70AQI
68AQI
68AQI
68AQI
68AQI
68AQI
67AQI
67AQI
66AQI
68AQI
68AQI
70AQI
66AQI
64AQI
66AQI
66AQI
65AQI
68AQI
75AQI
78AQI
77AQI
79AQI
86AQI
84AQI
79AQI
75AQI
71AQI
69AQI
68AQI
71AQI
66AQI
63AQI
65AQI
64AQI
60AQI
60AQI
62AQI
65AQI
69AQI
70AQI
66AQI
68AQI
67AQI
67AQI
70AQI
69AQI
70AQI
70AQI
71AQI
71AQI
68AQI
69AQI
67AQI
69AQI
75AQI
70AQI
77AQI
82AQI
82AQI
78AQI
80AQI
85AQI
80AQI
75AQI
73AQI
69AQI
68AQI
67AQI
68AQI
72AQI
68AQI
70AQI
70AQI
65AQI
50AQI
60AQI
58AQI
84AQI
94AQI
82AQI
72AQI
86AQI
73AQI
82AQI
73AQI
132AQI
118AQI
119AQI
101AQI
105AQI
119AQI
129AQI
115AQI
90AQI
76AQI
84AQI
76AQI
67AQI
70AQI
72AQI
97AQI
No. of days
202587AQI
Highest AQI recorded in
January129AQI
Lowest AQI recorded in
July67AQI
202478AQI
Highest AQI recorded in
January123AQI
Lowest AQI recorded in
August47AQI
202384AQI
Highest AQI recorded in
December125AQI
Lowest AQI recorded in
September49AQI
202274AQI
Highest AQI recorded in
December108AQI
Lowest AQI recorded in
April31AQI
Most & Least Polluted Years Over the Last 4 Years
Perungudi's annual 2025 AQI (87) shows an average percentage change of 11.07% (worsened AQI) compared to previous years: 2022 (74), 2023 (84), 2024 (78).