Qualité de l’air à Canton

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

DERNIÈRE MISE À JOUR (Heure locale)

1.43M personnes suivent cette ville

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Carte IQAir avec points colorées AQI

Temps

Quel temps fait-il actuellement à Canton?

Icône météo
TempsPartiellement nuageux
Température71.6°C
Humidité68%
Vent2.2 mp/h
Pression1014 mb
La pollution de l'air a coûté environ4,200 morts*à Canton en 2021EN SAVOIR PLUS*La pollution de l'air a aussi coûté $2,000,000,000 USD à Canton en 2021

Classement IQA des villes en direct

Classement en direct des principales villes en Chine

#cityIQA US
1 Aksou, Région autonome de Xinjiang

406

2 Yangquan, Province de Shanxi

233

3 Xinzhou, Province de Shanxi

203

4 Jingmen, Province de Hubei

176

5 Pékin, Municipalité de Pékin

173

6 Shenyang, Province de Liaoning

172

7 Taiyuan, Province de Shanxi

172

8 Anshan, Province de Liaoning

170

9 Yangcun, Municipalité de Tianjin

170

10 Liaoyang, Province de Liaoning

169

(Heure locale)

CLASSEMENT MONDIAL DE l’IQA

Classement IQA en direct à Canton

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

#stationIQA US
1 Wuzhong

119

2 Guangzhou Middle School

117

3 Tiyu xi

107

4 City monitoring station

105

5 Guangdong Business School

105

6 Guangya Middle School

102

7 US Consulate in Guangzhou

102

8 Guangdong Panyu Middle School

97

9 Luhu

95

10 Conghua Middle School

91

(Heure locale)

CLASSEMENT MONDIAL DE l’IQA

IQA US

96

IQA en direct
Moyen

Visage humain indiquant le niveau AQI

Vue d’ensemble

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

Niveau de pollution de l’airIndice de pollution de l’airPrincipaux polluants
Moyen 96 IQA UStrendPM2.5
PolluantsConcentration
PM2.5
33.5 µg/m³trend
pm10
62 µg/m³trend
o3
40 µg/m³trend
no2
42.5 µg/m³trend
so2
10 µg/m³trend
co
900 µg/m³

Recommandations de santé

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

Une icône de fenêtre ouverteFermez vos fenêtres pour empêcher à l'air pollué de rentrer.
Une icône d'une personne qui fait du véloLes groupes sensibles doivent éviter les activités de plein air.

Prévision

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

JourNiveau de pollutionTempsTempératureVent
jeudi, févr. 25

Moyen 74 IQA US

Visage humain indiquant le niveau AQI
vendredi, févr. 26

Moyen 63 IQA US

Visage humain indiquant le niveau AQI
samedi, févr. 27

Moyen 62 IQA US

Visage humain indiquant le niveau AQI
Aujourd’hui

Moyen 75 IQA US

Visage humain indiquant le niveau AQI
Icône météo71.6°62.6°
Vent tournant à 121 degré

2.2 mp/h

lundi, mars 1

Mauvais pour la santé 156 IQA US

Visage humain indiquant le niveau AQI
Icône météo78.8°68°
Vent tournant à 108 degré

2.2 mp/h

mardi, mars 2

Mauvais pour les personnes sensibles 136 IQA US

Visage humain indiquant le niveau AQI
Icône météo71.6°60.8°
Vent tournant à 358 degré

13.4 mp/h

mercredi, mars 3

Mauvais pour les personnes sensibles 124 IQA US

Visage humain indiquant le niveau AQI
Icône météo69.8°62.6°
Vent tournant à 87 degré

4.5 mp/h

jeudi, mars 4

Mauvais pour les personnes sensibles 126 IQA US

Visage humain indiquant le niveau AQI
Icône météo77°66.2°
Vent tournant à 145 degré

2.2 mp/h

vendredi, mars 5

Mauvais pour les personnes sensibles 149 IQA US

Visage humain indiquant le niveau AQI
Icône météo77°71.6°
Vent tournant à 155 degré

11.2 mp/h

samedi, mars 6

Mauvais pour la santé 197 IQA US

Visage humain indiquant le niveau AQI
Icône météo80.6°71.6°
Vent tournant à 130 degré

4.5 mp/h

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Historique

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

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

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

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

What is the air quality index of Guangzhou?

Guangzhou is the capital city of Guangdong Province in Southern China. It is situated on the Pearl River about 120 kilometres northwest of Hong Kong. It is home to around 25 million people in its entire metropolitan area.

Towards the end of 2020, Guangzhou was suffering from poor air quality with a US AQI number of 149. This classification is based on recommended levels by the World Health Organisation (WHO). Concentration levels of the pollutants suspended in the air were as follows: - PM2.5 - 55 µg/m³, PM10 - 78 µg/m³, ozone (O3) - 104.5 µg/m³, nitrogen dioxide (NO2) - 35.5 µg/m³, sulphur dioxide (SO2) - 12 µg/m³ and carbon monoxide (CO) - 800 µg/m³. These figures are quoted as microns per cubic metre.

With air quality as poor as this, the advice is to close doors and windows to prevent the ingress of dirty air. Those people who are sensitive to poor quality air are advised to wear a mask when venturing outside. And outdoor exercise should be postponed until the air quality improves.

What is the main source of Guangzhou’s polluted air?

Guangzhou is a megacity with a large economic aggregate, a very large population density, and an equally large source of total pollutant emissions. With the rapid economic and social development, the rigidity of pollutant emissions has increased, all of which pose challenges for improving air quality. . Although the pressure is high and the task is not easy, Guangzhou tries to control and reduce air pollution from the source, optimise energy and industrial structure, and strengthen environmental supervision and other measures to carry out comprehensive control of air pollution in all directions, ensuring that levels of PM2.5 do not go higher than the suggested standard.

However, automobile exhaust is becoming the primary source of air pollution and can even exceed the level of industrial pollution. In 2007, the number of motor vehicles in Guangzhou reached 1.8 million, with an annual increase of 150,000 vehicles per year.

Is air pollution in Guangzhou getting better or worse?

According to figures released by the Swiss air monitoring company IQAir.com, the quality of air in Guangzhou is slightly improving. In 2019 the overall quality was “Moderate”. This was achieved from February through until September with figures between 12.1 and 35.4 µg/m³. For the remaining 4 months, the quality was classified as being “Unhealthy for sensitive groups” with figures between 35.5 and 55.4 µg/m³. In 2017 the mean annual figure was 33.9 µg/m³ and in 2018 there was a slight improvement with a figure of 33.2 µg/m³. The 2019 figure was 28.9 µg/m³.

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

According to recent data released by the Guangzhou Environmental Protection Bureau, the concentration of PM2.5 in Guangzhou in 2017 was 35 µg/m³, a decrease of 18 µg/m³ from 2013, reaching the national secondary standard, equivalent to a decrease of 34 per cent. In addition, the concentration of sulphur dioxide (SO2) in Guangzhou dropped from 20 µg/m³ in 2013 to 12 µg/m³ in 2017, a decrease of 40 per cent; the concentration of PM10 fell from 72 µg/m³ meter to 56 µg/m³ indicating that the ambient air quality was steadily improving.

Moving forward, Guangzhou will adhere to the "blueprint" and continue to improve the ambient air quality, from improving the fine management of dust pollution control, strengthening the control of mobile source pollution, deepening the remediation of industrial pollution, and further promoting the environmental relocation of polluting enterprises away from the city centre. Remediation work will be carried out in various ways, in order to achieve a PM2.5 concentration of 30 µg/m³ in Guangzhou, and the six main indicators of environmental air pollution will then fully meet the standards.

In recent years, Guangzhou’s air quality has continued to improve, but as PM2.5 continues to decrease, ozone (O3) has become the main factor affecting air quality, and volatile organic compounds (VOCs) emitted by motor vehicles are one of the main precursors for ozone generation.

The next target is to be the emissions given off by diesel-powered trucks. Guangzhou currently has 1.55 million diesel trucks, accounting for about 5 per cent of the numbers of vehicles on the road, but the nitrogen oxides (NOx) and particulate matter (PM2.5/PM10) emitted by them account for 67 per cent and 88 per cent of the total vehicle emissions, respectively.

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

In recent years, there has been more and more smog in Guangzhou, and the concentration of particles in the air has also increased. Residents living in this kind of situation are increasingly experiencing suffocation, coughing, dizziness, fatigue, nausea and increased bouts of asthma and other symptoms of respiratory diseases. The reason people tolerate such a harsh environment is simply that it is bothersome but not immediately fatal, so its seriousness is often overlooked.

Urban air pollution has greatly hindered the lives and health of the people, because polluted air, such as haze and smog, is essentially composed of countless black carbon (BC), dust and other particles suspended in the atmosphere over cities. The composition of the haze and smog is very complex as it contains hundreds of atmospheric particulate matter, among which are the airborne particles less than 10 microns in diameter which are particularly harmful to human health, such as mineral particulate matter, sea salt, sulphates and nitrates. These microscopic particles can easily enter the human respiratory tract and lodge in the bronchial tubes. Once in the alveoli, they can causes rhinitis, bronchitis and other diseases. Long-term exposure to this environment can also induce lung cancer.

In 2003 it was reported that as many as 300,000 people in China die from outdoor air pollution every year. Chinese people living in cities have become "vacuum cleaners" and each person has to filter out every 15 cubic meters of poisonous dust from the air every day.

Many people do not realise just how dangerous the air they breathe every day is, and most people living in big cities do not associate their abnormalities with air quality. Ironically, the public is both the victim and the producer of air pollution.

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