Rabindra Bharati University, Kolkata, West Bengal, 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
Rabindra Bharati University, Kolkata, West Bengal, India
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 101 of Poor air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Rabindra Bharati University, Kolkata, West Bengal, India
5 AM11th Oct 2025
5 PM
4 AM12th Oct 2025
124AQI
84AQI
146AQI
104AQI
In the last 24 hours,
Rabindra Bharati University's AQI reached its highest point of 146 at 2 AM during the Night, while the lowest point, 84, was recorded at 5 AM during the Day between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Rabindra Bharati University, Kolkata, West Bengal, India
29°C27/31°C
29°C26/32°C
28°C26/32°C
26°C26/28°C
27°C25/30°C
28°C26/33°C
29°C25/33°C
29°C26/34°C
30°C27/34°C
29°C26/33°C
27°C26/29°C
27°C25/31°C
28°C25/32°C
29°C26/33°C
29°C26/33°C
29°C26/33°C
29°C26/33°C
29°C26/33°C
30°C27/35°C
30°C26/34°C
26°C25/27°C
27°C25/29°C
27°C25/30°C
28°C26/31°C
28°C25/31°C
28°C25/31°C
28°C25/31°C
28°C25/32°C
27°C25/31°C
27°C24/31°C
--°C/°C
84AQI
75AQI
86AQI
80AQI
2025 Days Vs Air Quality
Rabindra Bharati University, Kolkata, West Bengal, India
1%
3
62%
175
23%
66
14%
40
Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)
Under WHO’s Safe Air Quality Limits: 1%
Health Risk Level:
Extreme
In 2025, 1% of 285 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
Rabindra Bharati University, Kolkata, West Bengal, India
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
184AQI
160AQI
173AQI
169AQI
168AQI
164AQI
179AQI
146AQI
157AQI
173AQI
179AQI
178AQI
181AQI
172AQI
168AQI
164AQI
161AQI
161AQI
152AQI
160AQI
172AQI
179AQI
179AQI
180AQI
176AQI
158AQI
167AQI
170AQI
157AQI
153AQI
150AQI
139AQI
157AQI
154AQI
153AQI
161AQI
152AQI
138AQI
145AQI
149AQI
158AQI
143AQI
120AQI
142AQI
144AQI
152AQI
137AQI
114AQI
129AQI
128AQI
118AQI
108AQI
118AQI
128AQI
139AQI
152AQI
148AQI
163AQI
159AQI
146AQI
149AQI
143AQI
138AQI
148AQI
137AQI
155AQI
144AQI
135AQI
137AQI
127AQI
134AQI
124AQI
118AQI
106AQI
104AQI
107AQI
106AQI
135AQI
105AQI
120AQI
90AQI
121AQI
131AQI
148AQI
122AQI
130AQI
136AQI
142AQI
139AQI
120AQI
110AQI
99AQI
102AQI
118AQI
116AQI
106AQI
87AQI
77AQI
66AQI
70AQI
73AQI
75AQI
90AQI
92AQI
94AQI
102AQI
84AQI
75AQI
87AQI
86AQI
88AQI
95AQI
102AQI
89AQI
83AQI
73AQI
88AQI
99AQI
78AQI
82AQI
81AQI
79AQI
79AQI
79AQI
79AQI
81AQI
88AQI
91AQI
92AQI
108AQI
110AQI
99AQI
94AQI
87AQI
85AQI
79AQI
76AQI
67AQI
61AQI
60AQI
62AQI
71AQI
63AQI
64AQI
64AQI
58AQI
60AQI
59AQI
57AQI
58AQI
79AQI
77AQI
101AQI
92AQI
77AQI
78AQI
87AQI
91AQI
97AQI
95AQI
92AQI
80AQI
68AQI
69AQI
76AQI
68AQI
66AQI
63AQI
65AQI
68AQI
71AQI
76AQI
83AQI
75AQI
69AQI
67AQI
60AQI
65AQI
70AQI
68AQI
70AQI
67AQI
63AQI
68AQI
73AQI
74AQI
69AQI
65AQI
61AQI
66AQI
63AQI
64AQI
64AQI
65AQI
60AQI
64AQI
63AQI
64AQI
67AQI
68AQI
69AQI
67AQI
65AQI
68AQI
66AQI
59AQI
52AQI
56AQI
62AQI
65AQI
54AQI
67AQI
70AQI
81AQI
78AQI
76AQI
75AQI
77AQI
84AQI
76AQI
63AQI
61AQI
64AQI
77AQI
63AQI
60AQI
53AQI
57AQI
55AQI
52AQI
53AQI
58AQI
63AQI
68AQI
66AQI
64AQI
68AQI
67AQI
65AQI
64AQI
64AQI
66AQI
67AQI
79AQI
67AQI
63AQI
50AQI
64AQI
70AQI
78AQI
82AQI
85AQI
88AQI
91AQI
85AQI
80AQI
77AQI
74AQI
68AQI
67AQI
69AQI
82AQI
96AQI
112AQI
98AQI
78AQI
77AQI
67AQI
57AQI
52AQI
54AQI
55AQI
74AQI
62AQI
40AQI
44AQI
61AQI
57AQI
109AQI
120AQI
110AQI
128AQI
135AQI
101AQI
167AQI
141AQI
129AQI
90AQI
76AQI
76AQI
64AQI
66AQI
75AQI
88AQI
No. of days
202598AQI
Highest AQI recorded in
January167AQI
Lowest AQI recorded in
July64AQI
2024119AQI
Highest AQI recorded in
January214AQI
Lowest AQI recorded in
July51AQI
2023112AQI
Highest AQI recorded in
January183AQI
Lowest AQI recorded in
July44AQI
2022134AQI
Highest AQI recorded in
January202AQI
Lowest AQI recorded in
August67AQI
2021151AQI
Highest AQI recorded in
January237AQI
Lowest AQI recorded in
September85AQI
2020122AQI
Highest AQI recorded in
December251AQI
Lowest AQI recorded in
May48AQI
Most & Least Polluted Years Over the Last 6 Years
Rabindra Bharati University's annual 2025 AQI (98) shows an average percentage change of -22.6% (improved AQI) compared to previous years: 2020 (122), 2021 (151), 2022 (134), 2023 (112), 2024 (119).