Luftforurening i Tamil Nadu: Real-time Air Quality Index og smog alarm.

Aktuelle data fra stationer: Alandur Bus Depot, Chennai - CPCB Manali Village, Chennai - TNPCB Manali, Chennai - CPCB US Diplomatic Post: Chennai Velachery Res. Area, Chennai - CPCB BWSSB Kadabesanahalli, Bengaluru - CPCB US Diplomatic Post: Chennai SIDCO Kurichi, Coimbatore - TNPCB

Placeringer: Tiruchirappalli » Salem district » Nilgiris District » Madurai » Kanniyakumari » Coimbatore » Bellandur » Thiruvallur » Chennai district » Vellore » Kanchipuram » Tirunelveli » Krishnagiri » Erode » Tiruppur »

Prognoser for forurening og luftkvalitet for Tamil Nadu. I dag er lørdag den 4. maj 2024. Følgende luftforureningsværdier er blevet registreret for Tamil Nadu:

nitrogendioxid (NO2) - 22 (God)
kulilte (CO) - 1278 (God)
partikler (PM2,5) støv - -84 (God)
ozon (O3) - 15 (God)
svovldioxid (SO2) - 12 (God)
partikler (PM10) ophængt støv - 52 (Usundt for følsomme grupper)

Luftkvalitetsindeks i realtid (AQI) for Tamil Nadu, fredag den 14. oktober 2022: 3.

AQI 3 Usundt for følsomme grupper

Hvad er luftkvaliteten i Tamil Nadu dag? Er luften forurenet i Tamil Nadu?. Er der smog?

I dag (fredag den 14. oktober 2022) er luftkvaliteten moderat forurenet i Tamil Nadu. Raske mennesker kan opleve mindre irritationer og følsomme personer vil blive lidt påvirket i højere grad af forureninger i Tamil Nadu.

Hvor højt er niveauet af NO2? (nitrogendioxid (NO2))
22 (God)

Hvor højt er CO-niveauet? (kulilte (CO))
1278 (God)

Hvad er det nuværende niveau for PM2,5 i Tamil Nadu? (partikler (PM2,5) støv)
Dagens PM2.5 niveau er: -84 (God) Til sammenligning var det højeste niveau af PM2,5 i Tamil Nadu i de sidste 7 dage: 81 (onsdag den 12. oktober 2022) og det laveste: -999 (tirsdag den 26. september 2023). De højeste PM2,5-værdier blev registreret: 597 (december 2018). Det laveste niveau af partikler PM2,5 forurening forekommer i måned: maju (11).

Hvordan er O3-niveauet i dag i Tamil Nadu? (ozon (O3))
15 (God)

Hvad er niveauet for SO2 forurening? (svovldioxid (SO2))
12 (God)

Hvad er niveauet for PM10 i dag i Tamil Nadu? (partikler (PM10) ophængt støv)
Det nuværende niveau af partikler PM10 i Tamil Nadu is: 52 (Usundt for følsomme grupper) De højeste PM10-værdier forekommer normalt i måned: 73 (november 2019). Den laveste værdi af partikel-PM10-forureningen Tamil Nadu er normalt registreret i: august (29).

Aktuelle data fredag den 14. oktober 2022 06.00

NO2 22 (God)

CO 1278 (God)

PM2,5 -84 (God)

O3 15 (God)

SO2 12 (God)

PM10 52 (Usundt for følsomme grupper)

Data om luftforurening fra de seneste dage i Tamil Nadu

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	2023-09-26	2023-09-27	2023-09-28	2023-09-29	2023-09-30	2023-10-01	2023-10-02	2023-10-03	2022-07-27	2022-07-28	2022-07-29	2022-07-30	2022-07-31	2022-08-01	2022-08-02	2024-01-31	2024-02-01	2024-02-02	2024-02-03	2024-02-04	2024-02-05	2024-02-06
no2	30 Good	14 Good	16 Good	16 Good	19 Good	18 Good	16 Good	17 Good	13 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	13 Good	14 Good	14 Good	13 Good	13 Good	15 Good	14 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good
co	1808 Good	1280 Good	1202 Good	1519 Good	1563 Good	1473 Good	1131 Good	1274 Good	1034 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	360 Good	360 Good	360 Good	1934 Good	2601 Moderate	1395 Good	50 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good
pm25	77 Very Unhealthy	27 Moderate	52 Unhealthy for Sensitive Groups	79 Very Unhealthy	40 Unhealthy for Sensitive Groups	28 Moderate	81 Very Unhealthy	20 Moderate	19 Moderate	-999 Good	-999 Good	-999 Good	-999 Good	-999 Good	-999 Good	-999 Good	-999 Good	41 Unhealthy for Sensitive Groups	55 Unhealthy	61 Unhealthy	6 Good	0 Good	8 Good	10 Good	30 Moderate	15 Moderate	15 Moderate	20 Moderate	19 Moderate	36 Unhealthy for Sensitive Groups	63 Unhealthy
o3	16 Good	5 Good	5 Good	5 Good	7 Good	7 Good	7 Good	8 Good	5 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	5 Good	5 Good	5 Good	8 Good	5 Good	8 Good	6 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good
so2	12 Good	19 Good	19 Good	13 Good	13 Good	13 Good	14 Good	15 Good	17 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	2 Good	2 Good	2 Good	7 Good	8 Good	6 Good	3 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good
pm10	74 Unhealthy for Sensitive Groups	44 Moderate	47 Moderate	24 Moderate	21 Moderate	38 Moderate	43 Moderate	38 Moderate	34 Moderate	- Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good	80 Unhealthy	102 Unhealthy	112 Very Unhealthy	29 Moderate	26 Moderate	17 Good	16 Good	- Good	- Good	- Good	- Good	- Good	- Good	- Good

data source »

pollution pm25 hikersbay.com — Luftforurening i Tamil Nadu fra december 2015 til maj 2020

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	2019-03	2019-01	2018-12	2018-07	2018-06	2016-02	2016-01	2015-12
pm25	11 (Good)	18 (Moderate)	35 (Unhealthy for Sensitive Groups)	43 (Unhealthy for Sensitive Groups)	46 (Unhealthy for Sensitive Groups)	40 (Unhealthy for Sensitive Groups)	37 (Unhealthy for Sensitive Groups)	32 (Moderate)	40 (Unhealthy for Sensitive Groups)	25 (Moderate)	35 (Moderate)	27 (Moderate)	32 (Moderate)	43 (Unhealthy for Sensitive Groups)	132 (Very bad Hazardous)	49 (Unhealthy for Sensitive Groups)	45 (Unhealthy for Sensitive Groups)	40 (Unhealthy for Sensitive Groups)	50 (Unhealthy for Sensitive Groups)	46 (Unhealthy for Sensitive Groups)	44 (Unhealthy for Sensitive Groups)	111 (Very bad Hazardous)	125 (Very bad Hazardous)	78 (Very Unhealthy)	55 (Unhealthy)	45 (Unhealthy for Sensitive Groups)	53 (Unhealthy for Sensitive Groups)	31 (Moderate)	30 (Moderate)	51 (Unhealthy for Sensitive Groups)	45 (Unhealthy for Sensitive Groups)	54 (Unhealthy for Sensitive Groups)	54 (Unhealthy for Sensitive Groups)	45 (Unhealthy for Sensitive Groups)	46 (Unhealthy for Sensitive Groups)	47 (Unhealthy for Sensitive Groups)	54 (Unhealthy for Sensitive Groups)	50 (Unhealthy for Sensitive Groups)	50 (Unhealthy for Sensitive Groups)	30 (Moderate)	37 (Unhealthy for Sensitive Groups)	33 (Moderate)	37 (Unhealthy for Sensitive Groups)	18 (Moderate)	20 (Moderate)	26 (Moderate)	22 (Moderate)	205 (Very bad Hazardous)	597 (Very bad Hazardous)	45 (Unhealthy for Sensitive Groups)	105 (Very Unhealthy)	36 (Unhealthy for Sensitive Groups)	49 (Unhealthy for Sensitive Groups)	63 (Unhealthy)
no2	7.3 (Good)	9.8 (Good)	13 (Good)	19 (Good)	21 (Good)	20 (Good)	20 (Good)	22 (Good)	15 (Good)	19 (Good)	19 (Good)	17 (Good)	12 (Good)	11 (Good)	12 (Good)	18 (Good)	22 (Good)	18 (Good)	18 (Good)	33 (Good)	24 (Good)	21 (Good)	19 (Good)	18 (Good)	23 (Good)	23 (Good)	21 (Good)	19 (Good)	13 (Good)	18 (Good)	17 (Good)	18 (Good)	15 (Good)	15 (Good)	22 (Good)	22 (Good)	30 (Good)	32 (Good)	29 (Good)	21 (Good)	15 (Good)	15 (Good)	14 (Good)	17 (Good)	12 (Good)	8.7 (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)
so2	4.4 (Good)	5.7 (Good)	8 (Good)	12 (Good)	13 (Good)	8.4 (Good)	7.3 (Good)	6.9 (Good)	6.2 (Good)	7.1 (Good)	6.1 (Good)	5.6 (Good)	5.6 (Good)	6.2 (Good)	12 (Good)	9.3 (Good)	8.8 (Good)	6.9 (Good)	9.4 (Good)	7 (Good)	6 (Good)	9.6 (Good)	8.5 (Good)	18 (Good)	13 (Good)	12 (Good)	11 (Good)	9.9 (Good)	6 (Good)	5.8 (Good)	5.2 (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)
co	577 (Good)	692 (Good)	475 (Good)	558 (Good)	399 (Good)	395 (Good)	606 (Good)	638 (Good)	646 (Good)	407 (Good)	608 (Good)	426 (Good)	839 (Good)	450 (Good)	234 (Good)	491 (Good)	918 (Good)	844 (Good)	619 (Good)	443 (Good)	202 (Good)	63 (Good)	725 (Good)	684 (Good)	719 (Good)	746 (Good)	834 (Good)	259 (Good)	272 (Good)	488 (Good)	602 (Good)	635 (Good)	280 (Good)	681 (Good)	702 (Good)	477 (Good)	587 (Good)	204 (Good)	156 (Good)	494 (Good)	259 (Good)	318 (Good)	448 (Good)	11 (Good)	556 (Good)	868 (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)
o3	35 (Good)	33 (Good)	30 (Good)	21 (Good)	19 (Good)	24 (Good)	29 (Good)	31 (Good)	56 (Good)	47 (Good)	34 (Good)	41 (Good)	26 (Good)	28 (Good)	60 (Good)	22 (Good)	27 (Good)	24 (Good)	16 (Good)	32 (Good)	30 (Good)	15 (Good)	33 (Good)	41 (Good)	39 (Good)	25 (Good)	26 (Good)	28 (Good)	20 (Good)	22 (Good)	26 (Good)	41 (Good)	31 (Good)	23 (Good)	35 (Good)	38 (Good)	35 (Good)	43 (Good)	42 (Good)	23 (Good)	22 (Good)	17 (Good)	28 (Good)	50 (Good)	34 (Good)	29 (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)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)	- (Good)

data source »

Livskvalitet i Tamil Nadu

Grønne og parker i byen

Tamil Nadu 47 %

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

partikler PM2,5

Tamil Nadu 37 (Unhealthy for Sensitive Groups)

Fornøjelse at tilbringe tid i byen

Tamil Nadu 54 %

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

partikler PM10

Tamil Nadu 66 (Unhealthy for Sensitive Groups)

Luftforurening

Tamil Nadu 46 %

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

Bortskaffelse af affald

Tamil Nadu 41 %

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

Drikkevandets tilgængelighed og kvalitet

Tamil Nadu 55 %

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

Renlighed og ryddelighed

Tamil Nadu 43 %

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

Støj- og lysforurening

Tamil Nadu 51 %

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

Vandforurening

Tamil Nadu 59 %

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

Source: Numbeo

Alandur Bus Depot, Chennai - CPCB

mandag den 31. oktober 2022 01.45

NO2 39 (God)

nitrogendioxid (NO2)

CO 4310 (Moderat)

kulilte (CO)

PM2,5 89 (Meget usundt)

partikler (PM2,5) støv

O3 26 (God)

ozon (O3)

SO2 9.5 (God)

svovldioxid (SO2)

PM10 137 (Meget usundt)

partikler (PM10) ophængt støv

Manali Village, Chennai - TNPCB

mandag den 31. oktober 2022 02.00

PM2,5 120 (Meget dårlig farligt)

partikler (PM2,5) støv

PM10 27 (Moderat)

partikler (PM10) ophængt støv

NO2 7.5 (God)

nitrogendioxid (NO2)

SO2 9.3 (God)

svovldioxid (SO2)

CO 470 (God)

kulilte (CO)

O3 24 (God)

ozon (O3)

Manali, Chennai - CPCB

fredag den 14. oktober 2022 06.00

SO2 14 (God)

svovldioxid (SO2)

NO2 17 (God)

nitrogendioxid (NO2)

CO 560 (God)

kulilte (CO)

O3 4.2 (God)

ozon (O3)

PM10 31 (Moderat)

partikler (PM10) ophængt støv

PM2,5 10 (God)

partikler (PM2,5) støv

US Diplomatic Post: Chennai

tirsdag den 3. oktober 2023 08.00

PM2,5 -999 (God)

partikler (PM2,5) støv

Velachery Res. Area, Chennai - CPCB

mandag den 31. oktober 2022 01.45

NO2 48 (Moderat)

nitrogendioxid (NO2)

CO 940 (God)

kulilte (CO)

PM2,5 32 (Moderat)

partikler (PM2,5) støv

O3 3.6 (God)

ozon (O3)

SO2 20 (God)

svovldioxid (SO2)

PM10 70 (Usundt for følsomme grupper)

partikler (PM10) ophængt støv

BWSSB Kadabesanahalli, Bengaluru - CPCB

tirsdag den 2. august 2022 05.15

PM10 21 (Moderat)

partikler (PM10) ophængt støv

PM2,5 10 (God)

partikler (PM2,5) støv

SO2 2.1 (God)

svovldioxid (SO2)

CO 300 (God)

kulilte (CO)

O3 6.8 (God)

ozon (O3)

NO2 15 (God)

nitrogendioxid (NO2)

US Diplomatic Post: Chennai

tirsdag den 6. februar 2024 07.00

PM2,5 52 (Usundt for følsomme grupper)

partikler (PM2,5) støv

SIDCO Kurichi, Coimbatore - TNPCB

fredag den 14. oktober 2022 06.00

SO2 19 (God)

svovldioxid (SO2)

PM10 24 (Moderat)

partikler (PM10) ophængt støv

O3 23 (God)

ozon (O3)

PM2,5 16 (Moderat)

partikler (PM2,5) støv

CO 1090 (God)

kulilte (CO)

NO2 8.1 (God)

nitrogendioxid (NO2)

Alandur Bus Depot, Chennai - CPCB

index	2022-10-31
no2	47
co	4080
pm25	81
o3	20
so2	5.5
pm10	124

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

US Diplomatic Post: Chennai

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	-999	-999	-999	-999	-999

Velachery Res. Area, Chennai - CPCB

index	2022-10-31
no2	36
co	875
pm25	31
o3	4.5
so2	20
pm10	71

BWSSB Kadabesanahalli, Bengaluru - CPCB

index	2022-08-02	2022-08-01	2022-07-31	2022-07-30	2022-07-29	2022-07-28	2022-07-27
o3	5.7	7.6	5	7.7	4.5	5.1	4.5
pm10	16	17	26	29	112	102	80
pm25	10	8	0.26	6.1	61	55	41
so2	2.7	6.1	8.4	6.5	2.1	2.1	2.1
co	50	1395	2601	1934	360	360	360
no2	14	15	13	13	14	14	13

US Diplomatic Post: Chennai

index	2024-02-06	2024-02-05	2024-02-04	2024-02-03	2024-02-02	2024-02-01	2024-01-31
pm25	63	36	19	20	15	15	30

SIDCO Kurichi, Coimbatore - TNPCB

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
o3	6.3	12	11	9.1	9.4	5.9	6	6.3
so2	19	19	19	19	19	19	19	19
pm25	25	30	38	33	26	20	30	26
no2	9.6	17	15	19	20	16	16	12
co	980	1012	1046	1222	973	912	952	864
pm10	32	39	44	37	19	29	38	35

Alandur Bus Depot, Chennai - CPCB

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
pm25	13	15	32	43	42	43	38	46	31	25	31	22	46	46	385	60	59	45	54	23	40	69
no2	5	11	11	20	21	22	12	24	11	15	15	18	8.7	4.1	14	27	27	19	20	16	29	11
so2	3.8	4.3	4.7	5.3	6	5.3	9.3	8	5.3	6.4	4.1	4.8	4.4	5	18	14	17	9.2	9.1	6.3	7.1	6.7
co	448	406	583	562	599	595	700	1	1	657	714	750	950	1	699	997	943	977	1	1	14	70
o3	21	14	19	28	18	15	16	14	16	17	23	29	19	16	45	26	31	24	27	45	34	15

Alandur Bus Depot

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	14	19	28	25	16	13	11	16	12	14	11	11	15	14	26	25	25	18	11	13	15	18	10	6.7
o3	38	42	36	27	29	35	21	22	28	44	32	23	35	38	33	39	46	24	22	20	36	50	34	29
co	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	26	26	20	26	-	30	23	-
pm25	55	76	68	49	51	39	43	49	44	57	56	56	56	-	-	-	-	-	-	-	-	-	-	-
so2	9.4	16	19	18	17	14	4.9	4.9	5.3	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

IIT

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	20	19	19	24	23	27	9.8	16	16	14	11	11	18	16	27	33	20	21	14	18	15	16	14	12
co	783	817	921	818	990	1	1	439	593	718	1	947	822	554	634	407	442	470	755	926	894	1	894	769
o3	28	40	41	22	23	22	19	22	24	38	29	23	34	38	37	47	37	21	22	14	21	-	-	-
pm25	39	51	45	40	46	32	25	28	26	31	45	29	30	-	-	-	-	-	-	-	-	-	-	-
so2	5.3	6.5	6.4	9.1	5.8	3.2	3.2	3	2.9	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Manali Village, Chennai - TNPCB

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

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

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	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

US Diplomatic Post: Chennai

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	2018-09	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	9.5	8.9	22	31	35	35	48	14	21	19	22	19	24	15	22	35	205	597	43	94	45	105	95	46	201	329	84	54	52	65	18	23	27	24	40	31	29	32	47	54	50	50	30	37	33	37	18	20	26	36	49	63

Velachery Res. Area, Chennai - CPCB

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
pm25	8.7	10	27	32	30	25	30	26	16	14	49	41	26	16	34	41	34	26	26	37	34
no2	1.7	1.6	3.8	5.7	4.9	8.8	16	18	17	17	23	27	8.3	7.6	11	9.8	13	15	15	46	33
so2	4	7.4	6.4	6	5.3	4.9	4.5	4.7	3.6	3.8	3.7	4.1	4.7	4.6	4.5	4.2	6.2	4.2	4.3	9.1	4.1
co	744	747	665	875	845	454	525	793	724	724	767	1	826	843	1	966	779	659	648	925	779
o3	12	11	5.6	20	12	23	17	15	15	20	34	41	18	16	75	21	32	31	9.2	34	26

BWSSB Kadabesanahalli, Bengaluru - CPCB

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	2018-11	2018-10	2018-09	2018-08	2018-05	2018-04	2018-03
pm25	10	39	69	76	53	42	33	40	95	25	33	51	114	33	32	21	19	34	39	58
no2	17	16	30	40	42	33	36	37	21	21	26	3	-	21	34	24	18	22	18	31
so2	-	7.5	7.1	7	6.6	7	6.5	6.6	5.5	4.5	4.7	-	5.5	5.4	6.5	4.7	4.2	2.7	3.6	3.9
co	1	990	825	861	1	619	991	977	970	1	833	742	954	1	983	790	844	845	1	81
o3	17	29	27	14	12	24	26	1.7	-	-	-	42	53	18	20	18	11	17	30	16

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