Sridevi Colony, 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
Sridevi Colony, Chennai, Tamil Nadu, India
AQI Trends: Highest and Lowest
Same Day Analysis (19th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 197 of Unhealthy air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Oct - 20th Oct 2025
Sridevi Colony, Chennai, Tamil Nadu, India
5 AM19th Oct 2025
5 PM
4 AM20th Oct 2025
AQI
AQI
289AQI
73AQI
In the last 24 hours,
Sridevi Colony's AQI reached its highest point of 289 at 7 PM during the Night, while the lowest point, 73, was recorded at 2 PM during the Night between 19th Oct and 20th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Sridevi Colony, Chennai, Tamil Nadu, India
27°C25/29°C
29°C25/33°C
30°C27/33°C
30°C27/34°C
31°C27/35°C
31°C27/35°C
30°C27/34°C
30°C27/35°C
30°C26/36°C
31°C27/36°C
30°C27/34°C
29°C26/32°C
29°C25/35°C
30°C26/34°C
30°C27/35°C
30°C27/34°C
30°C27/34°C
29°C27/33°C
29°C27/32°C
28°C26/32°C
28°C26/32°C
28°C26/32°C
28°C26/32°C
28°C26/32°C
28°C26/31°C
27°C26/30°C
28°C26/31°C
28°C26/31°C
28°C26/31°C
--°C/°C
--°C/°C
96AQI
87AQI
106AQI
91AQI
2025 Days Vs Air Quality
Sridevi Colony, Chennai, Tamil Nadu, India
78%
229
21%
60
1%
3
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 292 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
Sridevi Colony, Chennai, Tamil Nadu, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
115AQI
142AQI
141AQI
148AQI
150AQI
155AQI
145AQI
150AQI
146AQI
148AQI
118AQI
122AQI
114AQI
91AQI
88AQI
129AQI
140AQI
131AQI
114AQI
136AQI
137AQI
142AQI
115AQI
111AQI
109AQI
107AQI
115AQI
137AQI
137AQI
131AQI
101AQI
97AQI
87AQI
87AQI
103AQI
127AQI
132AQI
142AQI
134AQI
139AQI
153AQI
119AQI
124AQI
100AQI
102AQI
96AQI
108AQI
124AQI
126AQI
123AQI
109AQI
99AQI
104AQI
98AQI
98AQI
114AQI
124AQI
114AQI
108AQI
84AQI
78AQI
80AQI
78AQI
81AQI
104AQI
121AQI
107AQI
90AQI
93AQI
92AQI
89AQI
80AQI
93AQI
70AQI
80AQI
108AQI
91AQI
86AQI
87AQI
86AQI
84AQI
77AQI
84AQI
88AQI
96AQI
111AQI
96AQI
110AQI
90AQI
97AQI
102AQI
87AQI
74AQI
78AQI
67AQI
68AQI
67AQI
68AQI
63AQI
80AQI
85AQI
93AQI
87AQI
78AQI
70AQI
76AQI
76AQI
73AQI
82AQI
79AQI
79AQI
79AQI
77AQI
74AQI
76AQI
75AQI
69AQI
61AQI
62AQI
66AQI
69AQI
71AQI
83AQI
79AQI
83AQI
80AQI
82AQI
90AQI
94AQI
93AQI
96AQI
94AQI
100AQI
96AQI
99AQI
95AQI
91AQI
86AQI
80AQI
78AQI
70AQI
81AQI
82AQI
74AQI
70AQI
65AQI
73AQI
90AQI
74AQI
83AQI
86AQI
82AQI
86AQI
83AQI
85AQI
93AQI
100AQI
97AQI
88AQI
90AQI
90AQI
91AQI
88AQI
84AQI
77AQI
77AQI
76AQI
81AQI
80AQI
80AQI
80AQI
70AQI
70AQI
69AQI
70AQI
68AQI
66AQI
65AQI
65AQI
65AQI
64AQI
66AQI
69AQI
65AQI
65AQI
65AQI
63AQI
64AQI
68AQI
69AQI
70AQI
73AQI
73AQI
73AQI
70AQI
72AQI
71AQI
70AQI
71AQI
72AQI
71AQI
73AQI
71AQI
70AQI
73AQI
71AQI
69AQI
68AQI
68AQI
66AQI
67AQI
70AQI
68AQI
74AQI
72AQI
70AQI
68AQI
69AQI
71AQI
73AQI
73AQI
72AQI
68AQI
70AQI
63AQI
65AQI
63AQI
62AQI
58AQI
60AQI
61AQI
63AQI
68AQI
69AQI
65AQI
68AQI
66AQI
67AQI
68AQI
69AQI
70AQI
68AQI
68AQI
70AQI
68AQI
69AQI
73AQI
66AQI
73AQI
73AQI
73AQI
80AQI
79AQI
77AQI
80AQI
84AQI
79AQI
77AQI
74AQI
70AQI
68AQI
70AQI
72AQI
74AQI
73AQI
74AQI
75AQI
78AQI
70AQI
71AQI
69AQI
77AQI
87AQI
98AQI
84AQI
99AQI
84AQI
93AQI
88AQI
103AQI
105AQI
99AQI
96AQI
123AQI
149AQI
136AQI
90AQI
71AQI
89AQI
78AQI
141AQI
197AQI
128AQI
114AQI
91AQI
76AQI
83AQI
79AQI
69AQI
67AQI
74AQI
106AQI
No. of days
202588AQI
Highest AQI recorded in
January128AQI
Lowest AQI recorded in
August67AQI
202482AQI
Highest AQI recorded in
January121AQI
Lowest AQI recorded in
May51AQI
202392AQI
Highest AQI recorded in
January123AQI
Lowest AQI recorded in
July70AQI
202286AQI
Highest AQI recorded in
December113AQI
Lowest AQI recorded in
April60AQI
202186AQI
Highest AQI recorded in
January159AQI
Lowest AQI recorded in
November72AQI
202092AQI
Highest AQI recorded in
December133AQI
Lowest AQI recorded in
June60AQI
Most & Least Polluted Years Over the Last 6 Years
Sridevi Colony's annual 2025 AQI (88) shows an average percentage change of 0.8% (worsened AQI) compared to previous years: 2020 (92), 2021 (86), 2022 (86), 2023 (92), 2024 (82).