Velachery Res. Area, 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
Velachery Res. Area, Chennai, Tamil Nadu, India
AQI Trends: Highest and Lowest
Same Day Analysis (5th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 87 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Oct - 6th Oct 2025
Velachery Res. Area, Chennai, Tamil Nadu, India
5 AM5th Oct 2025
6 PM
4 AM6th Oct 2025
AQI
AQI
108AQI
71AQI
In the last 24 hours,
Velachery Res. Area's AQI reached its highest point of 108 at 9 PM during the Night, while the lowest point, 71, was recorded at 5 AM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Velachery Res. Area, Chennai, Tamil Nadu, India
30°C28/33°C
30°C28/33°C
30°C28/33°C
30°C28/34°C
30°C28/34°C
30°C27/33°C
30°C27/33°C
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
--°C/°C
--°C/°C
81AQI
73AQI
88AQI
78AQI
2025 Days Vs Air Quality
Velachery Res. Area, Chennai, Tamil Nadu, India
78%
216
22%
60
0.7%
2
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 278 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
Velachery Res. Area, Chennai, Tamil Nadu, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
110AQI
145AQI
140AQI
149AQI
149AQI
157AQI
143AQI
149AQI
146AQI
146AQI
115AQI
124AQI
116AQI
90AQI
90AQI
125AQI
138AQI
132AQI
110AQI
137AQI
134AQI
140AQI
116AQI
106AQI
108AQI
108AQI
116AQI
136AQI
135AQI
134AQI
106AQI
100AQI
92AQI
90AQI
108AQI
128AQI
129AQI
139AQI
132AQI
137AQI
151AQI
119AQI
122AQI
104AQI
101AQI
96AQI
103AQI
124AQI
127AQI
124AQI
112AQI
108AQI
111AQI
102AQI
104AQI
102AQI
121AQI
104AQI
100AQI
85AQI
81AQI
82AQI
81AQI
82AQI
98AQI
119AQI
108AQI
91AQI
90AQI
98AQI
93AQI
85AQI
94AQI
72AQI
79AQI
107AQI
96AQI
89AQI
90AQI
97AQI
89AQI
79AQI
85AQI
86AQI
95AQI
111AQI
95AQI
110AQI
88AQI
94AQI
102AQI
87AQI
74AQI
78AQI
68AQI
67AQI
67AQI
67AQI
64AQI
80AQI
87AQI
93AQI
86AQI
77AQI
70AQI
74AQI
74AQI
71AQI
80AQI
78AQI
77AQI
79AQI
77AQI
72AQI
75AQI
74AQI
70AQI
62AQI
62AQI
66AQI
69AQI
73AQI
85AQI
79AQI
83AQI
79AQI
82AQI
90AQI
93AQI
95AQI
94AQI
92AQI
101AQI
97AQI
101AQI
98AQI
91AQI
84AQI
82AQI
84AQI
71AQI
81AQI
83AQI
74AQI
70AQI
64AQI
71AQI
89AQI
74AQI
81AQI
85AQI
81AQI
88AQI
84AQI
95AQI
97AQI
104AQI
101AQI
90AQI
92AQI
92AQI
94AQI
91AQI
85AQI
81AQI
77AQI
76AQI
78AQI
80AQI
79AQI
77AQI
72AQI
73AQI
70AQI
71AQI
69AQI
65AQI
65AQI
64AQI
64AQI
64AQI
67AQI
70AQI
64AQI
64AQI
66AQI
62AQI
64AQI
68AQI
70AQI
71AQI
73AQI
73AQI
74AQI
72AQI
75AQI
72AQI
72AQI
72AQI
74AQI
73AQI
75AQI
74AQI
72AQI
72AQI
74AQI
72AQI
71AQI
69AQI
68AQI
67AQI
68AQI
69AQI
74AQI
73AQI
70AQI
68AQI
70AQI
75AQI
75AQI
78AQI
75AQI
70AQI
68AQI
63AQI
66AQI
62AQI
62AQI
57AQI
59AQI
62AQI
63AQI
67AQI
68AQI
65AQI
66AQI
66AQI
67AQI
68AQI
67AQI
70AQI
68AQI
67AQI
70AQI
68AQI
70AQI
80AQI
67AQI
73AQI
72AQI
73AQI
79AQI
79AQI
80AQI
80AQI
83AQI
79AQI
77AQI
73AQI
70AQI
68AQI
71AQI
76AQI
79AQI
75AQI
76AQI
78AQI
88AQI
82AQI
78AQI
80AQI
81AQI
93AQI
88AQI
86AQI
98AQI
88AQI
87AQI
127AQI
114AQI
92AQI
75AQI
84AQI
81AQI
70AQI
68AQI
77AQI
89AQI
No. of days
202587AQI
Highest AQI recorded in
January127AQI
Lowest AQI recorded in
August68AQI
202487AQI
Highest AQI recorded in
January115AQI
Lowest AQI recorded in
May54AQI
202391AQI
Highest AQI recorded in
December114AQI
Lowest AQI recorded in
July78AQI
202284AQI
Highest AQI recorded in
May113AQI
Lowest AQI recorded in
March56AQI
202173AQI
Highest AQI recorded in
January100AQI
Lowest AQI recorded in
April39AQI
202073AQI
Highest AQI recorded in
December99AQI
Lowest AQI recorded in
April38AQI
Most & Least Polluted Years Over the Last 6 Years
Velachery Res. Area's annual 2025 AQI (87) shows an average percentage change of 8.1% (worsened AQI) compared to previous years: 2020 (73), 2021 (73), 2022 (84), 2023 (91), 2024 (87).