Qualité de l’air à Patna

Indice de qualité de l’air (IQA) et pollution de l’air (PM2.5) à Patna

DERNIÈRE MISE À JOUR (Heure locale)

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Carte IQAir avec points colorées AQI

Contributeurs de données sur la qualité de l'air

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Sources de données

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Le logo du profil de Central Pollution Control BoardLe logo du profil de Central Pollution Control Board

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Temps

Quel temps fait-il actuellement à Patna?

Icône météo
TempsBrouillard
Température51.8°C
Humidité82%
Vent3.4 mp/h
Pression1014 mb
La pollution de l'air a coûté environ560 morts*à Patna en 2020EN SAVOIR PLUS*La pollution de l'air a aussi coûté $82,000,000 USD à Patna en 2020

Classement IQA des villes en direct

Classement en direct des principales villes en Inde

#cityIQA US
1 Shahdara, Delhi

445

2 Defence Colony, Delhi

392

3 Karol Bagh, Delhi

386

4 Dadri, Uttar Pradesh

352

5 Delhi, Delhi

321

6 Kanpur, Uttar Pradesh

311

7 Pitampura, Delhi

293

8 Gwalior, Madhya Pradesh

290

9 Moradabad, Uttar Pradesh

270

10 Muzaffarpur, Bihar

262

(Heure locale)

CLASSEMENT MONDIAL DE l’IQA

Classement IQA en direct à Patna

Classement de la qualité de l’air en direct à Patna

#stationIQA US
1 IGSC Planetarium Complex, Patna - BSPCB

248

(Heure locale)

CLASSEMENT MONDIAL DE l’IQA

IQA US

248

IQA en direct
Très mauvais pour la santé

Visage humain indiquant le niveau AQI

Vue d’ensemble

Quelle est la qualité de l’air actuellement à Patna?

Niveau de pollution de l’airIndice de pollution de l’airPrincipaux polluants
Très mauvais pour la santé 248 IQA UStrendPM2.5
PolluantsConcentration
PM2.5
197.9 µg/m³trend
o3
78.6 µg/m³
no2
100 µg/m³
so2
20 µg/m³trend
co
2180 µg/m³trend

Recommandations de santé

Comment se protéger de la pollution de l’air à Patna?

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Une icône de purificateur IQAir Utilisez un purificateur d'air.
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Une icône de fenêtre ouverteFermez vos fenêtres pour empêcher à l'air pollué de rentrer.
Une icône d'une personne qui fait du véloÉvitez les activités de plein air.

Prévision

Prévision de l’indice de qualité de l’air (IQA) à Patna

JourNiveau de pollutionTempsTempératureVent
mercredi, janv. 13

Très mauvais pour la santé 246 IQA US

Visage humain indiquant le niveau AQI
jeudi, janv. 14

Très mauvais pour la santé 268 IQA US

Visage humain indiquant le niveau AQI
vendredi, janv. 15

Très mauvais pour la santé 237 IQA US

Visage humain indiquant le niveau AQI
Aujourd’hui

Très mauvais pour la santé 252 IQA US

Visage humain indiquant le niveau AQI
Icône météo71.6°46.4°
Vent tournant à 260 degré

4.5 mp/h

dimanche, janv. 17

Mauvais pour la santé 177 IQA US

Visage humain indiquant le niveau AQI
Icône météo75.2°48.2°
Vent tournant à 142 degré

0 mp/h

lundi, janv. 18

Mauvais pour la santé 175 IQA US

Visage humain indiquant le niveau AQI
Icône météo78.8°50°
Vent tournant à 69 degré

2.2 mp/h

mardi, janv. 19

Mauvais pour la santé 172 IQA US

Visage humain indiquant le niveau AQI
Icône météo77°51.8°
Vent tournant à 278 degré

6.7 mp/h

mercredi, janv. 20

Mauvais pour la santé 159 IQA US

Visage humain indiquant le niveau AQI
Icône météo77°51.8°
Vent tournant à 275 degré

6.7 mp/h

jeudi, janv. 21

Mauvais pour la santé 155 IQA US

Visage humain indiquant le niveau AQI
Icône météo75.2°50°
Vent tournant à 275 degré

4.5 mp/h

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Historique

Graphique de l’historique de la qualité de l’air à Patna

Comment se protéger au mieux de la pollution de l’air?

Réduire votre exposition à la pollution de l’air à Patna

ANALYSES ET STATISTIQUES DE LA QUALITé DE L’AIR POUR Patna

What is the air quality index of Patna?

Patna is the capital city of Bihar and is situated on the banks of the river Ganges in Eastern India. It is also very close to three other large river systems which not only make it make it unique but also the largest riverine city in the world. Towards the end of 2020 Patna experienced some extremely poor air quality with some days returning readings from the hazardous zone. The average PM2.5 measurement for 2019 was 82.1 µg/m³. Which was an improvement on the 2018 and 2017 figures which were 119.7 µg/m³ and 118.5 µg/m³ respectively. For just 2 months in 2019 Patna experienced “Moderate “air quality with figures in the low 30s. Four of the remaining months put it in the “Unhealthy” category with figures between 55.5 and 150 µg/m³. During November, December and January the air quality was recorded as being in the “Very unhealthy” bracket with figures of between 150.5 to 250.4 µg/m³. The remaining three months recorded levels put Patna in the “Unhealthy for sensitive groups” category. These quoted figures are a direct indication of the air quality index with figures recommended by the World Health Organisation (WHO).

Why Patna is polluted?

In November 2019, Patna was declared to be the most polluted city in Bihar with PM2.5 levels reaching a staggering 428 µg/m³. The reason behind this sharp unexpected rise is that, due to floods, straw from Paddy fields is being burnt in nearby areas which adds particles to the fog that is already present there which formed because of the governments’ construction works being carried out in the city. The State Pollution Control Board has complained to the local authorities about the burning of garbage and stubble in the fields. Their answer was that this trend needs to be suspended immediately with the cooperation of the Department of Agriculture, otherwise the situation will worsen.

One of the more unusual reasons for the poor air quality is due to the river Ganges changing its course over the past two decades. Over this time, it has moved 4 kilometres away from the city, leaving large areas of dry sand which was once the river bed. This dry sand is picked up by the strong winds blowing in from the Himalayas and depositing it across the city.

This situation is compounded by a large amount of traffic on the roads which churn up the dust after it has settled and send it airborne once more. The mining of sand has been stopped but the transportation of it on open lorries continues unchecked.

The construction industry needs to be encouraged to shield the spread of dust into the environment and spray the ground with water to stop the dust rising up. These regulations are seldom adhered to for any notable length of time.

Is air pollution in Patna getting worse?

People still burn wood, coal and dried dung cakes as fuel both for cooking and for heating purposes in the cooler months. Dried leaves and other organic matter are often disposed of in this way. According to the website operated by the Bihar State Pollution Control Board (BSPCB) the AQI in Patna was 430 at noon on 27th November 2019 falling slightly to 427 at 3 pm and 425 at 4 pm. It had been 419 on 26th November and 404 on the day before. All of these figures classify it as “severe”. It fell slightly over the next 2 consecutive days to 395 and 398, but these figures are still classed as “Very Poor”. The board added that the figures were not as accurate as was thought because they all came from just one monitoring station. Four new ambient stations were added during the following month.

What can be done to improve the air quality in Patna?

The local authorities intend to plant trees on the dried-up river bed to create a green zone. The land will be very fertile and trees should soon establish themselves as a green belt and stop the sand from blowing away. The board intend to plant up to 117 varieties of local trees from between 3 to 20 metres high, to help combat climate change. Unfortunately, due to the lack of funds, this project has yet to start.

The Central Pollution Control Board considers PM2.5 levels in the air to be a normal range from 60 to 90 µg/m³, but according to the World Health Organization (WHO) standard, the annual average of PM2.5 should not exceed 40 µg/m³ (micrograms per cubic meter). During the last year, for not a single day has the air of Patna and Muzaffarpur been recorded at the standard level of the World Health Organization.

What are the effects on health through breathing in Patna’s polluted air?

Towards the end of 2020, measurements were taken from the monitoring stations which indicated that Patna was experiencing pollution levels classed as “Hazardous”. The figures are in excess of US AQI 300, getting as high as 369 on some days.

With pollution at these levels, the general advice is to stay at home and close all doors and windows to prevent the dirty air from entering and avoid any outdoor activity, if possible. If a trip outside is unavoidable then it is advisable to wear a good quality mask and limit the time spent away from home.

Even people who are healthy can suffer health effects from exposure to polluted air. This will vary from person to person and it depends on many factors such as the type of pollutant and its concentration level, your current state of health and the length of time exposed to the dirty air.

High levels of pollution cause respiratory illnesses and put extra stress on the heart and lungs. Cells can become irreparably damaged, too. The ageing of the lungs accelerates as they must work harder to get the level of oxygen that the body needs. Diseases such as asthma, bronchitis, emphysema and even cancer can be attributed to exposure to polluted air.

The most susceptible groups of people are those with existing medical problems, pregnant women, children under the age of 14 years and senior citizens.

Sources de données de Patna sur la qualité de l'air

Contributeurs 1

Où est l’air est-il le plus propre à Patna?