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!
July Air Quality Analysis
Kolkata, West Bengal, India
AQI Trends: Highest and Lowest
Same Day Analysis (17th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 90 of Moderate air quality on the same day.
Day & Night AQI Trend: 16th Jul - 17th Jul 2026
Kolkata, West Bengal, India
4 AM16th Jul 2026
6 PM
3 AM17th Jul 2026
85AQI
58AQI
91AQI
58AQI
In the last 24 hours,
Kolkata's AQI reached its highest point of 91 at 8 PM during the Night, while the lowest point, 58, was recorded at 6 AM during the Day between 16th Jul and 17th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Kolkata, West Bengal, India
33°C29/39°C
33°C30/40°C
33°C29/40°C
32°C30/37°C
31°C29/35°C
32°C29/36°C
34°C30/40°C
33°C28/42°C
33°C29/39°C
32°C29/39°C
33°C29/38°C
33°C29/40°C
33°C29/38°C
30°C28/34°C
32°C29/36°C
31°C28/35°C
30°C27/34°C
30°C28/32°C
29°C27/32°C
29°C27/33°C
30°C27/35°C
28°C27/30°C
29°C27/31°C
29°C27/31°C
31°C26/36°C
29°C27/34°C
29°C26/33°C
30°C28/34°C
30°C27/34°C
30°C27/33°C
105AQI
93AQI
99AQI
95AQI
2026 Days Vs Air Quality
Kolkata, West Bengal, India
22%
43
42%
83
17%
33
18%
35
2%
4
Total number of days with different AQI categories in last 198 days in 2026 (167 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2026, 0% of 198 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
Kolkata, West Bengal, India
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
328AQI (US)
270AQI (US)
291AQI (US)
301AQI (US)
220AQI (US)
274AQI (US)
348AQI (US)
260AQI (US)
242AQI (US)
219AQI (US)
216AQI (US)
221AQI (US)
216AQI (US)
247AQI (US)
238AQI (US)
231AQI (US)
265AQI (US)
266AQI (US)
280AQI (US)
322AQI (US)
289AQI (US)
215AQI (US)
249AQI (US)
268AQI (US)
233AQI (US)
222AQI (US)
202AQI (US)
217AQI (US)
243AQI (US)
200AQI (US)
193AQI (US)
194AQI (US)
198AQI (US)
212AQI (US)
211AQI (US)
191AQI (US)
175AQI (US)
181AQI (US)
190AQI (US)
193AQI (US)
202AQI (US)
210AQI (US)
199AQI (US)
201AQI (US)
189AQI (US)
193AQI (US)
193AQI (US)
201AQI (US)
188AQI (US)
199AQI (US)
203AQI (US)
206AQI (US)
208AQI (US)
214AQI (US)
174AQI (US)
182AQI (US)
183AQI (US)
166AQI (US)
160AQI (US)
162AQI (US)
169AQI (US)
183AQI (US)
180AQI (US)
184AQI (US)
172AQI (US)
161AQI (US)
160AQI (US)
158AQI (US)
155AQI (US)
160AQI (US)
160AQI (US)
137AQI (US)
132AQI (US)
107AQI (US)
113AQI (US)
92AQI (US)
91AQI (US)
100AQI (US)
123AQI (US)
119AQI (US)
137AQI (US)
144AQI (US)
144AQI (US)
129AQI (US)
153AQI (US)
137AQI (US)
106AQI (US)
131AQI (US)
133AQI (US)
140AQI (US)
141AQI (US)
116AQI (US)
110AQI (US)
130AQI (US)
127AQI (US)
123AQI (US)
95AQI (US)
99AQI (US)
114AQI (US)
122AQI (US)
139AQI (US)
128AQI (US)
127AQI (US)
108AQI (US)
134AQI (US)
97AQI (US)
91AQI (US)
105AQI (US)
116AQI (US)
115AQI (US)
125AQI (US)
119AQI (US)
130AQI (US)
113AQI (US)
96AQI (US)
97AQI (US)
112AQI (US)
129AQI (US)
86AQI (US)
90AQI (US)
92AQI (US)
89AQI (US)
107AQI (US)
76AQI (US)
88AQI (US)
83AQI (US)
112AQI (US)
118AQI (US)
128AQI (US)
113AQI (US)
101AQI (US)
82AQI (US)
64AQI (US)
76AQI (US)
60AQI (US)
82AQI (US)
70AQI (US)
84AQI (US)
95AQI (US)
115AQI (US)
128AQI (US)
130AQI (US)
125AQI (US)
125AQI (US)
125AQI (US)
127AQI (US)
103AQI (US)
95AQI (US)
97AQI (US)
97AQI (US)
103AQI (US)
104AQI (US)
126AQI (US)
131AQI (US)
135AQI (US)
115AQI (US)
117AQI (US)
105AQI (US)
108AQI (US)
115AQI (US)
115AQI (US)
94AQI (US)
113AQI (US)
107AQI (US)
128AQI (US)
116AQI (US)
107AQI (US)
112AQI (US)
113AQI (US)
96AQI (US)
112AQI (US)
117AQI (US)
125AQI (US)
142AQI (US)
148AQI (US)
114AQI (US)
91AQI (US)
78AQI (US)
92AQI (US)
121AQI (US)
105AQI (US)
104AQI (US)
77AQI (US)
63AQI (US)
52AQI (US)
53AQI (US)
63AQI (US)
90AQI (US)
90AQI (US)
92AQI (US)
104AQI (US)
119AQI (US)
146AQI (US)
129AQI (US)
115AQI (US)
87AQI (US)
68AQI (US)
90AQI (US)
251AQI (US)
193AQI (US)
141AQI (US)
114AQI (US)
100AQI (US)
113AQI (US)
91AQI (US)
No. of days
2026147AQI (US)
Highest AQI (US) recorded in
January251AQI (US)
Lowest AQI (US) recorded in
July91AQI (US)
2025127AQI (US)
Highest AQI (US) recorded in
December280AQI (US)
Lowest AQI (US) recorded in
July66AQI (US)
2024118AQI (US)
Highest AQI (US) recorded in
January219AQI (US)
Lowest AQI (US) recorded in
July59AQI (US)
2023118AQI (US)
Highest AQI (US) recorded in
January183AQI (US)
Lowest AQI (US) recorded in
July49AQI (US)
2022116AQI (US)
Highest AQI (US) recorded in
December195AQI (US)
Lowest AQI (US) recorded in
July50AQI (US)
2021122AQI (US)
Highest AQI (US) recorded in
January205AQI (US)
Lowest AQI (US) recorded in
September69AQI (US)
202094AQI (US)
Highest AQI (US) recorded in
December224AQI (US)
Lowest AQI (US) recorded in
August53AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Kolkata's annual 2026 AQI (US) (147) shows an average percentage change of 28.08% (worsened AQI (US)) compared to previous years: 2020 (94), 2021 (122), 2022 (116), 2023 (118), 2024 (118), 2025 (127).