Air Pollution in Kolkata: Real-time Air Quality Index and smog alert.

The latest data Last 7 days Kolkata pollution December 2015 - May 2020 Quality of life
Current data from stations: Ballygunge, Kolkata - WBPCB Fort William, Kolkata - WBPCB Jadavpur, Kolkata - WBPCB Rabindra Sarobar, Kolkata - WBPCB US Diplomatic Post: Kolkata Victoria, Kolkata - WBPCB US Diplomatic Post: Kolkata
Locations: « West Bengal Kolkata Taliganja » Salkhia » Hastings » Cossipore » Ballygunge »
Pollution and air quality forecast for Kolkata. Today is Monday, May 6, 2024. The following air pollution values have been recorded for Kolkata:
  1. particulate matter (PM2.5) dust - -90 (Good)
  2. ozone (O3) - 24 (Good)
  3. sulfur dioxide (SO2) - 9 (Good)
  4. particulate matter (PM10) suspended dust - 96 (Unhealthy)
  5. carbon monoxide (CO) - 616 (Good)
  6. nitrogen dioxide (NO2) - 23 (Good)
Real-time Air Quality Index (AQI) for Kolkata, Saturday, February 3, 2024: 4.

air quality index: 3
AQI 4 Unhealthy

What is the air quality in Kolkata today? Is the air polluted in Kolkata?. Is there smog?

Today (Saturday, February 3, 2024) air quality is poor in Kolkata. Poor air quality in Kolkata may cause breathing discomfort to people exposed and discomfort to people with heart disease. Children, seniors and individuals with respiratory or heart diseases should avoid sustained and high-intensity outdoor exercises in Kolkata. Other residents should moderately reduce outdoor activities in Kolkata.


What is the current level of PM2.5 in Kolkata? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: -90 (Good) For comparison, the highest level of PM2.5 in Kolkata in the last 7 days was: 528 (Wednesday, October 12, 2022) and the lowest: -999 (Sunday, October 1, 2023). The highest PM2.5 values were recorded: 209 (January 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: May (18).

How is the O3 level today in Kolkata? (ozone (O3))
24 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
9 (Good)

What is the level of PM10 today in Kolkata? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Kolkata is: 96 (Unhealthy) The highest PM10 values usually occur in month: 245 (February 2019). The lowest value of particulate matter PM10 pollution in Kolkata is usually recorded in: June (16).

How high is the CO level? (carbon monoxide (CO))
616 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
23 (Good)



Current data Saturday, February 3, 2024, 9:00 PM

PM2,5 -90 (Good)

O3 24 (Good)

SO2 9 (Good)

PM10 96 (Unhealthy)

CO 616 (Good)

NO2 23 (Good)

Data on air pollution from recent days in Kolkata

index 2022-10-07 2022-10-08 2022-10-09 2022-10-10 2022-10-11 2022-10-12 2022-10-13 2022-10-14 2022-10-31 2023-09-26 2023-09-27 2023-09-28 2023-09-29 2023-09-30 2023-10-01 2023-10-02 2023-10-03 2024-01-31 2024-02-01 2024-02-02 2024-02-03
co 289
Good		 202
Good		 155
Good		 161
Good		 202
Good		 319
Good		 398
Good		 549
Good		 598
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
pm10 36
Moderate		 37
Moderate		 24
Moderate		 26
Moderate		 28
Moderate		 25
Moderate		 44
Moderate		 58
Unhealthy for Sensitive Groups		 101
Unhealthy		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
o3 63
Good		 76
Moderate		 68
Good		 41
Good		 19
Good		 24
Good		 33
Good		 39
Good		 10
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
no2 18
Good		 18
Good		 16
Good		 16
Good		 15
Good		 19
Good		 11
Good		 10
Good		 26
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
pm25 11
Good		 16
Moderate		 10
Good		 10
Good		 10
Good		 528
Very bad Hazardous		 14
Moderate		 15
Moderate		 52
Unhealthy for Sensitive Groups		 20
Moderate		 30
Moderate		 2
Good		 64
Unhealthy		 -109
Good		 -999
Good		 -999
Good		 -999
Good		 96
Very Unhealthy		 77
Very Unhealthy		 119
Very bad Hazardous		 124
Very bad Hazardous
so2 11
Good		 13
Good		 11
Good		 12
Good		 12
Good		 11
Good		 6
Good		 8
Good		 8
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good		 -
Good
data source »
Air pollution in Kolkata from December 2015 to May 2020
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03 2016-02 2016-01 2015-12
pm25 18 (Moderate) 26 (Moderate) 52 (Unhealthy for Sensitive Groups) 89 (Very Unhealthy) 119 (Very bad Hazardous) 103 (Very Unhealthy) 105 (Very Unhealthy) 62 (Unhealthy) 18 (Moderate) 21 (Moderate) 23 (Moderate) 26 (Moderate) 48 (Unhealthy for Sensitive Groups) 40 (Unhealthy for Sensitive Groups) 32 (Moderate) 36 (Unhealthy for Sensitive Groups) 33 (Moderate) 40 (Unhealthy for Sensitive Groups) 45 (Unhealthy for Sensitive Groups) 60 (Unhealthy) 121 (Very bad Hazardous) 151 (Very bad Hazardous) 185 (Very bad Hazardous) 162 (Very bad Hazardous) 68 (Unhealthy) 21 (Moderate) 25 (Moderate) 28 (Moderate) 62 (Unhealthy) 118 (Very bad Hazardous) 187 (Very bad Hazardous) 174 (Very bad Hazardous) 119 (Very bad Hazardous) 74 (Unhealthy) 50 (Unhealthy for Sensitive Groups) 25 (Moderate) 30 (Moderate) 40 (Unhealthy for Sensitive Groups) 25 (Moderate) 34 (Moderate) 82 (Very Unhealthy) 104 (Very Unhealthy) 209 (Very bad Hazardous) 162 (Very bad Hazardous) 101 (Very Unhealthy) 36 (Unhealthy for Sensitive Groups) 33 (Moderate) 29 (Moderate) 35 (Unhealthy for Sensitive Groups) 41 (Unhealthy for Sensitive Groups) 73 (Unhealthy) 100 (Very Unhealthy) 161 (Very bad Hazardous) 162 (Very bad Hazardous)
pm10 38 (Moderate) 45 (Moderate) 91 (Unhealthy) 156 (Very bad Hazardous) 186 (Very bad Hazardous) 176 (Very bad Hazardous) 188 (Very bad Hazardous) 92 (Unhealthy) 35 (Moderate) 39 (Moderate) 44 (Moderate) 53 (Unhealthy for Sensitive Groups) 98 (Unhealthy) 86 (Unhealthy) 66 (Unhealthy for Sensitive Groups) 51 (Unhealthy for Sensitive Groups) 67 (Unhealthy for Sensitive Groups) 69 (Unhealthy for Sensitive Groups) 81 (Unhealthy) 102 (Unhealthy) 192 (Very bad Hazardous) 222 (Very bad Hazardous) 225 (Very bad Hazardous) 186 (Very bad Hazardous) 122 (Very Unhealthy) 36 (Moderate) 25 (Moderate) 48 (Moderate) - (Good) 245 (Very bad Hazardous) - (Good) - (Good) 165 (Very bad Hazardous) 113 (Very Unhealthy) 65 (Unhealthy for Sensitive Groups) 36 (Moderate) - (Good) - (Good) 50 (Unhealthy for Sensitive Groups) 54 (Unhealthy for Sensitive Groups) - (Good) - (Good) - (Good) - (Good) - (Good) 29 (Moderate) 24 (Moderate) 16 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
no2 11 (Good) 11 (Good) 36 (Good) 67 (Moderate) 63 (Moderate) 50 (Moderate) 66 (Moderate) 33 (Good) 19 (Good) 20 (Good) 15 (Good) 13 (Good) 40 (Moderate) 40 (Moderate) 38 (Good) 40 (Moderate) 35 (Good) 36 (Good) 29 (Good) 33 (Good) 56 (Moderate) 73 (Moderate) 72 (Moderate) 114 (Unhealthy for Sensitive Groups) 53 (Moderate) 26 (Good) 19 (Good) 19 (Good) - (Good) 123 (Unhealthy for Sensitive Groups) - (Good) - (Good) 68 (Moderate) 48 (Moderate) 36 (Good) 29 (Good) - (Good) - (Good) 30 (Good) 32 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 26 (Good) 22 (Good) 21 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
so2 6.3 (Good) 7.7 (Good) 11 (Good) 13 (Good) 10 (Good) 10 (Good) 7.8 (Good) 5.5 (Good) 5.1 (Good) 4.6 (Good) 7.1 (Good) 2.4 (Good) 8.7 (Good) 15 (Good) 15 (Good) 15 (Good) 15 (Good) 34 (Good) 9 (Good) 6.9 (Good) 20 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 2.1 (Good) 5.8 (Good) - (Good) 30 (Good) - (Good) - (Good) 12 (Good) 7.7 (Good) 4.3 (Good) 1.6 (Good) - (Good) - (Good) 5.5 (Good) 8.4 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
co 461 (Good) 512 (Good) 452 (Good) 480 (Good) 1 (Good) 329 (Good) 1.3 (Good) 468 (Good) 270 (Good) 276 (Good) 226 (Good) 334 (Good) 292 (Good) 573 (Good) 578 (Good) 583 (Good) 644 (Good) 279 (Good) 678 (Good) 802 (Good) 1 (Good) 1.5 (Good) 1 (Good) 1.5 (Good) 1 (Good) 609 (Good) 568 (Good) 597 (Good) - (Good) 1 (Good) - (Good) - (Good) 1 (Good) 1 (Good) 1 (Good) 1 (Good) - (Good) - (Good) 1 (Good) 1 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 524 (Good) 559 (Good) 553 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
o3 37 (Good) 45 (Good) 48 (Good) 37 (Good) 27 (Good) 30 (Good) 27 (Good) 24 (Good) 19 (Good) 18 (Good) 28 (Good) 23 (Good) 32 (Good) 14 (Good) 12 (Good) 16 (Good) 55 (Good) 37 (Good) 29 (Good) 24 (Good) 23 (Good) 14 (Good) 14 (Good) 24 (Good) 45 (Good) 19 (Good) 18 (Good) 17 (Good) - (Good) 31 (Good) - (Good) - (Good) 32 (Good) 32 (Good) 19 (Good) 8.8 (Good) - (Good) - (Good) 34 (Good) 45 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) 14 (Good) 17 (Good) 17 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
data source »

Quality of life in Kolkata

Green and Parks in the City

Kolkata 47%

Nepal: 32% Bangladesh: 33% Bhutan: 82% Sri Lanka: 59% Pakistan: 49%

particulate matter PM2.5

Kolkata 74 (Unhealthy)

Pleasure of spending time in the city

Kolkata 35%

Nepal: 32% Bangladesh: 26% Bhutan: 61% Sri Lanka: 52% Pakistan: 43%

particulate matter PM10

Kolkata 140 (Very Unhealthy)

Air Pollution

Kolkata 74%

Nepal: 76% Bangladesh: 78% Bhutan: 45% Sri Lanka: 53% Pakistan: 64%

Garbage Disposal

Kolkata 32%

Nepal: 25% Bangladesh: 22% Bhutan: 47% Sri Lanka: 41% Pakistan: 34%

Availability and quality of drinking water

Kolkata 48%

Nepal: 36% Bangladesh: 44% Bhutan: 64% Sri Lanka: 65% Pakistan: 44%

Cleanliness and tidiness

Kolkata 33%

Nepal: 27% Bangladesh: 23% Bhutan: 57% Sri Lanka: 52% Pakistan: 40%

Noise and Light pollution

Kolkata 65%

Nepal: 55% Bangladesh: 63% Bhutan: 55% Sri Lanka: 50% Pakistan: 59%

Water Pollution

Kolkata 69%

Nepal: 76% Bangladesh: 74% Bhutan: 56% Sri Lanka: 57% Pakistan: 70%
Source: Numbeo


Ballygunge, Kolkata - WBPCB

Friday, October 14, 2022, 6:00 AM

PM2,5 11 (Good)

particulate matter (PM2.5) dust

O3 75 (Moderate)

ozone (O3)

SO2 12 (Good)

sulfur dioxide (SO2)

PM10 76 (Unhealthy for Sensitive Groups)

particulate matter (PM10) suspended dust

CO 610 (Good)

carbon monoxide (CO)

NO2 9.8 (Good)

nitrogen dioxide (NO2)

Fort William, Kolkata - WBPCB

Monday, October 31, 2022, 1:45 AM

PM2,5 36 (Unhealthy for Sensitive Groups)

particulate matter (PM2.5) dust

PM10 104 (Unhealthy)

particulate matter (PM10) suspended dust

NO2 31 (Good)

nitrogen dioxide (NO2)

SO2 8.9 (Good)

sulfur dioxide (SO2)

CO 540 (Good)

carbon monoxide (CO)

O3 12 (Good)

ozone (O3)

Jadavpur, Kolkata - WBPCB

Monday, October 31, 2022, 2:00 AM

PM10 103 (Unhealthy)

particulate matter (PM10) suspended dust

SO2 5.6 (Good)

sulfur dioxide (SO2)

PM2,5 52 (Unhealthy for Sensitive Groups)

particulate matter (PM2.5) dust

CO 1190 (Good)

carbon monoxide (CO)

NO2 13 (Good)

nitrogen dioxide (NO2)

O3 7.9 (Good)

ozone (O3)

Rabindra Sarobar, Kolkata - WBPCB

Monday, October 31, 2022, 1:45 AM

PM2,5 47 (Unhealthy for Sensitive Groups)

particulate matter (PM2.5) dust

PM10 71 (Unhealthy for Sensitive Groups)

particulate matter (PM10) suspended dust

NO2 42 (Moderate)

nitrogen dioxide (NO2)

SO2 7.9 (Good)

sulfur dioxide (SO2)

CO 130 (Good)

carbon monoxide (CO)

O3 7.5 (Good)

ozone (O3)

US Diplomatic Post: Kolkata

Tuesday, October 3, 2023, 8:00 AM

PM2,5 -999 (Good)

particulate matter (PM2.5) dust

Victoria, Kolkata - WBPCB

Monday, October 31, 2022, 1:45 AM

PM10 126 (Very Unhealthy)

particulate matter (PM10) suspended dust

SO2 10 (Good)

sulfur dioxide (SO2)

PM2,5 68 (Unhealthy)

particulate matter (PM2.5) dust

CO 610 (Good)

carbon monoxide (CO)

NO2 21 (Good)

nitrogen dioxide (NO2)

O3 20 (Good)

ozone (O3)

US Diplomatic Post: Kolkata

Saturday, February 3, 2024, 9:00 PM

PM2,5 154 (Very bad Hazardous)

particulate matter (PM2.5) dust

Ballygunge, Kolkata - WBPCB

index 2022-10-14 2022-10-13 2022-10-12 2022-10-11 2022-10-10 2022-10-09 2022-10-08 2022-10-07
co 549 398 319 202 161 155 202 289
pm10 58 44 25 28 26 24 37 36
o3 39 33 24 19 41 68 76 63
no2 9.9 11 19 15 16 16 18 18
pm25 15 14 528 10 10 10 16 11
so2 8.4 5.9 11 12 12 11 13 11

Fort William, Kolkata - WBPCB

index 2022-10-31
pm25 36
pm10 104
no2 31
so2 8.9
co 540
o3 12

Jadavpur, Kolkata - WBPCB

index 2022-10-31
pm10 101
so2 5.6
pm25 52
co 1235
no2 13
o3 7.4

Rabindra Sarobar, Kolkata - WBPCB

index 2022-10-31
pm25 47
pm10 71
no2 42
so2 7.9
co 130
o3 7.5

US Diplomatic Post: Kolkata

index 2023-10-03 2023-10-02 2023-10-01 2023-09-30 2023-09-29 2023-09-28 2023-09-27 2023-09-26
pm25 -999 -999 -999 -109.17 64 1.8 30 20

Victoria, Kolkata - WBPCB

index 2022-10-31
pm10 129
so2 10
pm25 72
co 485
no2 19
o3 15

US Diplomatic Post: Kolkata

index 2024-02-03 2024-02-02 2024-02-01 2024-01-31
pm25 124 119 77 96

Fort William, Kolkata - WBPCB

2019-06   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06
pm25 20 28 54 74 117 107 117 67 23 26 27 31
pm10 44 46 89 146 217 196 218 102 41 46 54 60
no2 11 11 41 75 71 57 64 30 21 22 12 16
so2 5.8 6.3 9.7 13 11 11 7 5.3 5.4 4.5 7.3 2.5
co 337 368 613 974 1 985 1 637 401 402 323 296
o3 39 48 43 40 34 34 29 29 21 18 30 29

Jadavpur, Kolkata - WBPCB

2019-06   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06
pm25 15 23 49 77 115 62 84 67 13 20 20 25
pm10 35 49 91 152 145 151 163 86 22 31 34 47
no2 8.6 9.4 24 50 47 44 44 21 9.4 15 11 11
so2 6.7 7.1 9.4 9.8 9.8 8.1 8.9 6.6 4.9 5.4 7.9 2.2
co 429 458 743 1 1 1 1 767 408 424 354 371
o3 42 40 28 16 9.9 16 14 16 11 8.8 17 18

Rabindra Bharati University, Kolkata - WBSPCB

index 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09
no2 36 40 38 34 31 35 39 40 46 41 42 186 69 31
co 583 573 578 527 513 556 597 704 1 1 1 1 1 712
o3 40 14 12 13 23 24 20 22 25 16 14 33 73 26
pm10 100 86 66 72 80 86 103 137 245 260 291 229 168 49
so2 12 15 15 19 20 34 9 6.9 20 - - - - -

US Diplomatic Post: Kolkata

2015-12   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09 2017-08 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06 2016-05 2016-04 2016-03 2016-02 2016-01 2015-12
pm25 20 28 61 120 141 148 128 54 19 15 19 22 36 33 62 94 187 174 125 79 62 33 30 40 32 43 82 104 209 162 101 48 40 32 36 33 40 45 60 121 151 185 162 68 21 36 33 29 35 41 73 100 161 162

Victoria Memorial - WBSPCB

index 2017-10 2017-07 2017-06 2017-05 2017-04 2017-03 2017-02 2017-01 2016-12 2016-11 2016-10 2016-09 2016-08 2016-07 2016-06
co 1 638 775 1 758 899 1 2 1 2 1 506 524 559 553
o3 24 19 87 50 39 26 22 13 14 15 16 12 14 17 17
no2 45 46 39 37 20 26 66 104 103 42 36 22 26 22 21
pm10 96 30 54 51 59 66 139 184 158 143 76 24 29 24 16
so2 5.8 11 11 - - - - - - - - - - - -

Victoria, Kolkata - WBPCB

2018-04   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-05 2019-04 2019-02 2018-11 2018-10 2018-09 2018-08 2018-05 2018-04
pm25 18 23 46 85 102 94 91 61 19 23 25 13 24 142 112 68 38 17 19 24
pm10 34 41 93 169 195 181 182 89 41 40 44 25 48 245 165 113 65 36 50 54
no2 13 11 45 76 71 50 90 49 28 23 21 19 19 123 68 48 36 29 30 32
so2 6.4 9.6 14 16 9.8 11 7.4 4.5 4.9 3.8 6.2 2.1 5.8 30 12 7.7 4.3 1.6 5.5 8.4
co 617 710 1 464 1 2 2 1 1 1 1 568 597 1 1 1 1 1 1 1
o3 31 47 73 55 37 41 37 27 25 27 37 18 17 31 32 32 19 8.8 34 45

* Pollution data source: https://openaq.org (caaqm, CPCB, StateAir_Kolkata) The data is licensed under CC-By 4.0