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

The latest data Last 7 days Thiruvallur pollution March 2016 - May 2020
Current data from stations: Manali Village, Chennai - TNPCB Manali, Chennai - CPCB
Locations: « Tamil Nadu Thiruvallur Manali » Chinnasekkadu »
Pollution and air quality forecast for Thiruvallur. Today is Saturday, May 4, 2024. The following air pollution values have been recorded for Thiruvallur:
  1. particulate matter (PM2.5) dust - 65 (Unhealthy)
  2. particulate matter (PM10) suspended dust - 29 (Moderate)
  3. nitrogen dioxide (NO2) - 12 (Good)
  4. sulfur dioxide (SO2) - 12 (Good)
  5. carbon monoxide (CO) - 515 (Good)
  6. ozone (O3) - 14 (Good)
Real-time Air Quality Index (AQI) for Thiruvallur, Friday, October 14, 2022: 4.

air quality index: 3
AQI 4 Unhealthy

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

Today (Friday, October 14, 2022) air quality is poor in Thiruvallur. Poor air quality in Thiruvallur 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 Thiruvallur. Other residents should moderately reduce outdoor activities in Thiruvallur.


What is the current level of PM2.5 in Thiruvallur? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 65 (Unhealthy) For comparison, the highest level of PM2.5 in Thiruvallur in the last 7 days was: 138 (Sunday, October 9, 2022) and the lowest: 10 (Thursday, October 13, 2022). The highest PM2.5 values were recorded: 116 (March 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: May (12).

What is the level of PM10 today in Thiruvallur? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Thiruvallur is: 29 (Moderate) The highest PM10 values usually occur in month: 73 (November 2019). The lowest value of particulate matter PM10 pollution in Thiruvallur is usually recorded in: August (29).

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

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

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

How is the O3 level today in Thiruvallur? (ozone (O3))
14 (Good)



Current data Friday, October 14, 2022, 6:00 AM

PM2,5 65 (Unhealthy)

PM10 29 (Moderate)

NO2 12 (Good)

SO2 12 (Good)

CO 515 (Good)

O3 14 (Good)

Data on air pollution from recent days in Thiruvallur

index 2022-10-31 2022-10-07 2022-10-08 2022-10-09 2022-10-10 2022-10-11 2022-10-12 2022-10-13 2022-10-14
pm25 120
Very bad Hazardous		 28
Moderate		 75
Very Unhealthy		 138
Very bad Hazardous		 54
Unhealthy for Sensitive Groups		 24
Moderate		 124
Very bad Hazardous		 10
Good		 14
Moderate
pm10 27
Moderate		 54
Unhealthy for Sensitive Groups		 57
Unhealthy for Sensitive Groups		 19
Good		 23
Moderate		 38
Moderate		 41
Moderate		 37
Moderate		 36
Moderate
no2 8
Good		 17
Good		 17
Good		 17
Good		 17
Good		 17
Good		 17
Good		 17
Good		 17
Good
so2 9
Good		 18
Good		 18
Good		 7
Good		 7
Good		 8
Good		 10
Good		 12
Good		 15
Good
co 470
Good		 1695
Good		 1453
Good		 2125
Moderate		 2153
Moderate		 1724
Good		 1217
Good		 1535
Good		 1088
Good
o3 24
Good		 4
Good		 4
Good		 4
Good		 4
Good		 4
Good		 4
Good		 4
Good		 4
Good
data source »
Air pollution in Thiruvallur from March 2016 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 2019-05 2019-04 2019-02 2018-11 2018-10 2018-09 2018-08 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
pm25 12 (Good) 17 (Moderate) 30 (Moderate) 38 (Unhealthy for Sensitive Groups) 59 (Unhealthy) 47 (Unhealthy for Sensitive Groups) 36 (Unhealthy for Sensitive Groups) 33 (Moderate) 38 (Unhealthy for Sensitive Groups) 32 (Moderate) 36 (Unhealthy for Sensitive Groups) 27 (Moderate) 12 (Good) 23 (Moderate) 76 (Very Unhealthy) 64 (Unhealthy) 56 (Unhealthy) 65 (Unhealthy) 57 (Unhealthy) 39 (Unhealthy for Sensitive Groups) 59 (Unhealthy) 116 (Very bad Hazardous) 80 (Very Unhealthy) 102 (Very Unhealthy) 54 (Unhealthy for Sensitive Groups) 39 (Unhealthy for Sensitive Groups) 51 (Unhealthy for Sensitive Groups) 34 (Moderate) 28 (Moderate) 100 (Very Unhealthy) 86 (Very Unhealthy) 88 (Very Unhealthy) 84 (Very Unhealthy) 66 (Unhealthy) 64 (Unhealthy) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
no2 6.3 (Good) 10 (Good) 10 (Good) 15 (Good) 19 (Good) 18 (Good) 19 (Good) 16 (Good) 12 (Good) 22 (Good) 17 (Good) 7.5 (Good) 30 (Good) 21 (Good) 11 (Good) 15 (Good) 13 (Good) 16 (Good) 21 (Good) 51 (Moderate) 17 (Good) 21 (Good) 22 (Good) 17 (Good) 22 (Good) 22 (Good) 23 (Good) 17 (Good) 18 (Good) 24 (Good) 23 (Good) 25 (Good) 24 (Good) 22 (Good) 34 (Good) 37 (Good) 38 (Good) 40 (Good) 43 (Moderate) 24 (Good) 19 (Good) 14 (Good) 12 (Good) 17 (Good) 11 (Good) 7.5 (Good)
so2 4.8 (Good) 4.8 (Good) 11 (Good) 22 (Good) 24 (Good) 12 (Good) 8.2 (Good) 7.6 (Good) 8.3 (Good) 10 (Good) 9.1 (Good) 8.1 (Good) 7.8 (Good) 9.6 (Good) 14 (Good) 14 (Good) 6 (Good) 9.6 (Good) 20 (Good) 9.7 (Good) 9.4 (Good) 18 (Good) 11 (Good) 30 (Good) 13 (Good) 8.3 (Good) 9.3 (Good) 13 (Good) 10 (Good) 9.5 (Good) 7.3 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
co 847 (Good) 658 (Good) 151 (Good) 245 (Good) 275 (Good) 154 (Good) 408 (Good) 709 (Good) 769 (Good) 326 (Good) 362 (Good) 528 (Good) - (Good) 1 (Good) 1 (Good) 1 (Good) 968 (Good) 948 (Good) 982 (Good) 1 (Good) 14 (Good) 37 (Good) 666 (Good) 551 (Good) 517 (Good) 674 (Good) 678 (Good) 517 (Good) 542 (Good) 537 (Good) 610 (Good) 552 (Good) 558 (Good) 415 (Good) 581 (Good) 399 (Good) 540 (Good) 1 (Good) 1 (Good) 987 (Good) 1 (Good) 1 (Good) 2 (Good) 1 (Good) 750 (Good) 967 (Good)
o3 90 (Moderate) 79 (Moderate) 68 (Good) 24 (Good) 36 (Good) 33 (Good) 55 (Good) 93 (Moderate) 138 (Unhealthy for Sensitive Groups) 102 (Moderate) 45 (Good) 53 (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
pm10 - (Good) 43 (Moderate) 29 (Moderate) 68 (Unhealthy for Sensitive Groups) 59 (Unhealthy for Sensitive Groups) 57 (Unhealthy for Sensitive Groups) 73 (Unhealthy for Sensitive Groups) 47 (Moderate) 44 (Moderate) 29 (Moderate) 32 (Moderate) 40 (Moderate) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good) - (Good)
data source »

Manali Village, Chennai - TNPCB

Monday, October 31, 2022, 2:00 AM

PM2,5 120 (Very bad Hazardous)

particulate matter (PM2.5) dust

PM10 27 (Moderate)

particulate matter (PM10) suspended dust

NO2 7.5 (Good)

nitrogen dioxide (NO2)

SO2 9.3 (Good)

sulfur dioxide (SO2)

CO 470 (Good)

carbon monoxide (CO)

O3 24 (Good)

ozone (O3)

Manali, Chennai - CPCB

Friday, October 14, 2022, 6:00 AM

SO2 14 (Good)

sulfur dioxide (SO2)

NO2 17 (Good)

nitrogen dioxide (NO2)

CO 560 (Good)

carbon monoxide (CO)

O3 4.2 (Good)

ozone (O3)

PM10 31 (Moderate)

particulate matter (PM10) suspended dust

PM2,5 10 (Good)

particulate matter (PM2.5) dust

Manali Village, Chennai - TNPCB

index 2022-10-31
pm25 120
pm10 27
no2 7.5
so2 9.3
co 470
o3 24

Manali, Chennai - CPCB

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 1088 1535 1217 1724 2153 2125 1453 1695
o3 4 4.2 4.2 4.1 4.2 4.2 4.2 4.2
so2 15 12 9.8 7.7 6.8 7.1 18 18
pm10 36 37 41 38 23 19 57 54
pm25 14 10 124 24 54 138 75 28
no2 17 17 17 17 17 17 17 17

Manali Village, Chennai - TNPCB

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
no2 7.2 6.8 7.2 6.3 6.8 8.5 8.5 8.4 10 11 11 7.5
so2 7 6.8 7.2 11 15 8.3 7.7 8.5 9.5 9.2 9.4 8.1
co 776 526 300 489 549 306 238 691 704 650 723 528
pm25 11 11 17 25 40 40 37 25 20 17 23 27
pm10 - 43 29 68 59 57 73 47 44 29 32 40
o3 90 79 68 24 36 33 55 93 138 102 45 53

Manali, Chennai - CPCB

2018-03   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 2018-03
pm25 12 23 44 51 77 54 35 41 55 47 49 12 23 76 64 56 65 57 39 59 116
no2 5.4 14 14 23 31 28 29 23 13 33 22 30 21 11 15 13 16 21 51 17 21
so2 2.6 2.7 15 33 32 17 8.6 6.8 7 11 8.8 7.8 9.6 14 14 6 9.6 20 9.7 9.4 18
co 917 789 1 1 1 1 578 726 833 1 1 - 1 1 1 968 948 982 1 14 37

Manali

2016-03   2018-02
pollution pm25 hikersbay.com
index 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
no2 22 17 22 22 23 17 18 24 23 25 24 22 34 37 38 40 43 24 19 14 12 17 11 7.5
co 666 551 517 674 678 517 542 537 610 552 558 415 581 399 540 1 1 987 1 1 2 1 750 967
pm25 80 102 54 39 51 34 28 100 86 88 84 66 64 - - - - - - - - - - -
so2 11 30 13 8.3 9.3 13 10 9.5 7.3 - - - - - - - - - - - - - - -

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