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!
July Air Quality Analysis
Chennai, Tamil Nadu, India
AQI Trends: Highest and Lowest
Same Day Analysis (31st July ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 68 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Chennai, Tamil Nadu, India
71%
129
28%
51
0.5%
1
Total number of days with different AQI categories in last 182 days in 2025 (183 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 182 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
Chennai, Tamil Nadu, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
114AQI
132AQI
137AQI
143AQI
147AQI
151AQI
142AQI
146AQI
141AQI
146AQI
121AQI
119AQI
116AQI
91AQI
87AQI
124AQI
136AQI
126AQI
111AQI
131AQI
130AQI
136AQI
111AQI
109AQI
106AQI
103AQI
112AQI
133AQI
131AQI
127AQI
99AQI
91AQI
86AQI
84AQI
101AQI
120AQI
129AQI
137AQI
132AQI
136AQI
144AQI
113AQI
120AQI
100AQI
100AQI
101AQI
101AQI
118AQI
121AQI
120AQI
111AQI
99AQI
101AQI
96AQI
97AQI
109AQI
114AQI
105AQI
103AQI
84AQI
77AQI
80AQI
77AQI
78AQI
99AQI
114AQI
105AQI
93AQI
94AQI
92AQI
87AQI
79AQI
88AQI
66AQI
75AQI
94AQI
83AQI
80AQI
80AQI
81AQI
79AQI
74AQI
81AQI
87AQI
94AQI
109AQI
98AQI
107AQI
90AQI
95AQI
100AQI
86AQI
72AQI
76AQI
66AQI
66AQI
64AQI
67AQI
64AQI
79AQI
82AQI
90AQI
88AQI
77AQI
70AQI
74AQI
75AQI
72AQI
83AQI
80AQI
81AQI
79AQI
74AQI
74AQI
74AQI
72AQI
65AQI
58AQI
60AQI
65AQI
69AQI
70AQI
80AQI
77AQI
81AQI
77AQI
80AQI
90AQI
93AQI
92AQI
95AQI
95AQI
98AQI
94AQI
98AQI
93AQI
89AQI
84AQI
76AQI
79AQI
69AQI
83AQI
81AQI
71AQI
70AQI
67AQI
74AQI
88AQI
74AQI
81AQI
85AQI
82AQI
83AQI
80AQI
79AQI
87AQI
95AQI
95AQI
85AQI
86AQI
86AQI
88AQI
86AQI
81AQI
75AQI
73AQI
71AQI
73AQI
73AQI
73AQI
74AQI
70AQI
71AQI
69AQI
70AQI
69AQI
67AQI
66AQI
65AQI
65AQI
64AQI
124AQI
110AQI
88AQI
74AQI
82AQI
77AQI
No. of days
202593AQI
Highest AQI recorded in
January124AQI
Lowest AQI recorded in
April74AQI
202483AQI
Highest AQI recorded in
January127AQI
Lowest AQI recorded in
May54AQI
202390AQI
Highest AQI recorded in
January124AQI
Lowest AQI recorded in
September65AQI
202285AQI
Highest AQI recorded in
December110AQI
Lowest AQI recorded in
April55AQI
202181AQI
Highest AQI recorded in
January105AQI
Lowest AQI recorded in
May53AQI
202086AQI
Highest AQI recorded in
January133AQI
Lowest AQI recorded in
May57AQI
Most & Least Polluted Years Over the Last 6 Years
Chennai's annual 2025 AQI (93) shows an average percentage change of 9.3% (worsened AQI) compared to previous years: 2020 (86), 2021 (81), 2022 (85), 2023 (90), 2024 (83).
