Qualité de l’air à Belfast

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


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Contributeurs de données sur la qualité de l'air

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Sources de données


Le logo du profil de UK Air QualityLe logo du profil de Department for Environment Food & Rural Affairs - UK AIRLe logo du profil de European Environment Agency (EEA)Le logo du profil de Department of Agriculture, Environment and Rural Affairs - Northern IrelandLe logo du profil de 1 contributeur anonymeLe logo du profil de UK Air Quality

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Quel temps fait-il actuellement à Belfast?

Icône météo
TempsPartiellement nuageux
Vent2.3 mp/h
Pression1035 mb

Classement IQA des villes en direct

Classement en direct des principales villes au Royaume-Uni

Icône d'info-bulle
#cityIQA US
1 Holywood, Irlande du Nord


2 Rhyl, Pays de Galles


3 Wrexham, Pays de Galles


4 Chorley, Angleterre


5 Brinscall, Angleterre


6 Lancaster, Angleterre


7 Manchester, Angleterre


8 Salford, Angleterre


9 Carnforth, Angleterre


10 Nantwich, Angleterre


(Heure locale)


Classement IQA en direct à Belfast

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

Icône d'info-bulle
#stationIQA US
1 Saint Judes Avenue


2 Belfast Westlink Roden Street


3 Belfast Centre


(Heure locale)




IQA en direct

Visage humain indiquant le niveau AQI

Vue d’ensemble

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

Niveau de pollution de l’airIndice de pollution de l’airPrincipaux polluants
Moyen 69 IQA UStrendPM2.5
20.5 µg/m³trend

Recommandations de santé

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

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 de l’indice de qualité de l’air (IQA) à Belfast

JourNiveau de pollutionTempsTempératureVent
mercredi, mars 3

Bon 5 IQA US

Visage humain indiquant le niveau AQI
jeudi, mars 4

Bon 26 IQA US

Visage humain indiquant le niveau AQI
vendredi, mars 5

Bon 21 IQA US

Visage humain indiquant le niveau AQI

Moyen 73 IQA US

Visage humain indiquant le niveau AQI
Icône météo44.6°30.2°
Vent tournant à 210 degré

6.7 mp/h

dimanche, mars 7

Bon 33 IQA US

Visage humain indiquant le niveau AQI
Icône météo48.2°32°
Vent tournant à 239 degré

6.7 mp/h

lundi, mars 8

Bon 23 IQA US

Visage humain indiquant le niveau AQI
Icône météo42.8°32°
Vent tournant à 216 degré

4.5 mp/h

mardi, mars 9

Bon 8 IQA US

Visage humain indiquant le niveau AQI
Icône météo46.4°41°
Vent tournant à 204 degré

6.7 mp/h

mercredi, mars 10

Bon 9 IQA US

Visage humain indiquant le niveau AQI
Icône météo50°39.2°
Vent tournant à 225 degré

13.4 mp/h

jeudi, mars 11

Bon 6 IQA US

Visage humain indiquant le niveau AQI
Icône météo46.4°39.2°
Vent tournant à 251 degré

24.6 mp/h

vendredi, mars 12

Bon 5 IQA US

Visage humain indiquant le niveau AQI
Icône météo42.8°39.2°
Vent tournant à 257 degré

29.1 mp/h

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

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

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


Is Belfast a city with polluted air?

Belfast is a city located in the northern region of Ireland, being both the capital as well as the largest city situated in Northern Ireland. It is home to over 343 thousand inhabitants, and is counted as the twelfth largest city in the United Kingdom as well as the largest in Ireland. It has a prominent history as a major port city as well as playing a large role in the industrial revolution that took place between the 18th and 19th century. It still sees itself today as an important fixture amongst the U. K’s ports, with many industrial docks present, and as such this has played a large part in the continued deterioration of air quality seen in Northern Ireland.

In 2019 Belfast came in with a PM2.5 yearly average of 12.9 μg/m³, a reading that placed it by a fine margin into the ‘moderate’ pollution ratings bracket. This rating requires a PM2.5 reading of anywhere between 12.1 to 35.4 μg/m³ to be classified as such, and implies that whilst the air quality of Belfast is not in a catastrophic situation, it is most definitely far from perfect and could go a long way to improve its pollution levels considerably. This reading of 12.9 μg/m³ placed it in 1555th place out of all cities ranked worldwide, as well as in 3rd place out of all cities ranked in the United Kingdom.

What are the causes of air pollution in Belfast?

With a large amount of its industry based around tourism, as well as a large amount of foreign investment coming in, with subsequent infrastructure being built up in the city and surrounding areas, Belfast sees many different sources of pollution occurring, compounded further by meteorological conditions such as changes in the weather and the accompanying change in human behavior and its pollutive impact.

One of the most common and prevalent sources of pollution in Belfast would be that of the automobile industry, with tens of thousands of cars, motorbikes and other vehicles on the road at any given time. This can give rise to massive spikes of pollution, particularly during rush hour periods and in areas where the roads are less accommodating and channel large amounts of vehicles into a small space. The fallout from this is a sizeable amount of aggravating chemicals as well as hazardous particulate matter being left in the air, causing grave health effects on those who live nearby or have to move through these areas of high pollution.

Besides pollution caused by cars, other prominent ones which also have a combustion source as their central cause, include ones such as factory emissions, with industrial zones and power plants all putting out large amounts of pollution due to running on further unclean and unsustainable fuel sources such as coal. Lastly, the burning of firewood, charcoal and other materials in certain households can also be a major contributing factor, with all of the aforementioned points coming together to cause the high PM2.5 readings on record.

What are some of the main types of pollution found in the air in Belfast?

With much of its pollution arising from combustion sources, Belfast would have large amounts of related chemical compounds and particulate matter in the air. These would include prominent ones such as nitrogen dioxide (NO2) and sulfur dioxide (SO2), both of which find their release from cars as well as ships, with nitrogen dioxide finding a majority of its release from vehicles, whilst sulfur dioxide can be emitted in larger quantities from ship exhaust due to different regulations regarding sulfur content in ship fuels.

Other pollutants include black carbon and volatile organic compounds (VOC's), both of which are released via the incomplete combustion of both fossil fuels and organic matter. As such, everything from the simple act of burning wood to factory emissions would emit these materials. Black carbon is a potent carcinogen when inhaled, and makes up the majority of soot, often found coated in large quantities in areas that see a high volume of traffic. Some examples of VOC's include chemicals such as benzene, xylene, methylene chloride and formaldehyde.

When is the air quality at its most polluted in Belfast?

Regarding the air quality data collected over the course of 2019, it can be seen that there is a distinct period of higher pollution taking place within Belfast. The beginning months are when the PM2.5 levels are at their absolute highest, whilst the end of the year readings are significantly lower, indicating that the years end is when the air quality is at its cleanest, before the pollution levels rise rapidly as the new year comes around. December came in with a PM2.5 reading of 9.7 μg/m³, coming in within the World Health Organizations (WHO's) target bracket of 10 μg/m³ or less. This contrasted largely with January, which had a reading of 28.7 μg/m³, a reading that was nearly three times higher than the month of December.

This trend continued, with February coming in with a further reading of 36.1 μg/m³, making it the most polluted month of 2019 and the only month to fall into the ‘unhealthy for sensitive groups’ bracket. Whilst levels stayed elevated for the next few months, they also showed a drop at the same time before returning to more appreciable levels in May. So, in closing, the time period between January through to April was when the pollution levels were at their very worst in Belfast, with February being the worst month of the entire year by a considerable amount (five times higher than the lowest reading of the year, which was October at 6.9 μg/m³).

Who is most at risk to polluted air in Belfast?

Whilst every portion of the population is subject to adverse health issues when exposed to excessive amounts of pollution, there are certain groups that are even more at risk. People who live near busy roads or industrial areas are at greater risk for exposure, and looking at the individual aspect of people’s situation, their backgrounds also have a part to play. Young children are a group that can be considered particularly at risk, along with the elderly, those with compromised immune systems or preexisting health conditions, as well as individuals with excessive sensitivity towards chemicals.

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