Since September 2018, different datasets (open data), produced by Airparif, have been available on the portals: https://www.data.gouv.fr/fr/organizations/airparif-1/ et https://data-airparif-asso.opendata.arcgis.com

These datasets and associated metadata are made available via open data flows in order to facilitate their appropriation and reuse by third parties and in particular to supply new web services in an automated manner.

The data, under ODbL license, represents:

• The quantities of pollutants present in the air recorded at measuring stations (observed concentrations) or spatialized over the territories (mapped concentrations)
• The quantities of atmospheric pollutants and greenhouse gases released into the air by different sources of pollution (Emissions)
• Populations and area of ​​territory subject to regulatory value exceedances (Exhibition)
• Aggregated information to qualify observed and forecast air quality (air quality index)
• Triggering a pollution episode alert (pollution episode)

The instructions for using the flows are available in format pdf and under postman.

We remind you that Airparif remains the owner of its data. For any commercial use, please send an authorization request in the “Contact Us” tab of the Airparif website. For any use of this data, the source of Airparif must be mentioned. Airparif cannot be held responsible for the consequences resulting from misuse and/or erroneous interpretation of the data available within the system.

Air quality monitoring implemented by Airparif is carried out through the complementary use of three tools:

• Measuring stations (more than sixty including fifty automatic) which analyze either ambient pollution far from traffic or pollution along the roads.
• Measurement campaigns by mobile laboratories and chemical sensors to assess the impact of an infrastructure, the individual exposure of Ile-de-France residents to pollution or the concentrations of pollutants which are not yet regulated in the air (dioxins, pesticides, etc.).
• Modeling tools making it possible to create pollution maps, to predict the pollution of the day and the next day each day as well as its evolution hour by hour, to describe the annual levels of pollution along the roads or to evaluate the impact of reduction measures.

To learn more about our methods, go to the Means and Methods page of our site.

Within the same geographic area, the highest levels are recorded in the immediate vicinity of the main roads. Indeed, along the roads, pollutants from road traffic add to the so-called “background” urban pollution that we breathe throughout the Paris metropolitan area.
 
The levels decrease very quickly away from the axis, particularly in the first 10 meters. The distance from the axis which is under the influence of traffic varies depending on the pollutants considered but it remains relatively restricted (200m max in an open area for nitrogen dioxide and 100 to 150m for particles and benzene). This decrease distance also depends on the topography of the axis and the presence or absence of urban developments (noise walls, landscaped embankments, buildings, etc.) which have a screening effect.
 
At a distance of 500 meters from the highway, the influence of the highway is generally no longer noticeable. This is even more true if there is equipment such as noise barriers. It is likely that the concentration is quite comparable in the two configurations.

It is also good to know that pollution levels vary depending on the floors. In direct proximity to a road, pollution levels are highest on the ground floor, and decrease as you go up to the upper floors. However, the decrease is not linear between the floors: the difference is significant between the RDC and 1^er floor, then less and less important between 1^er and 2^nd floor, etc... with levels which become homogenous beyond a certain floor. 

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You will find all the information relating to air quality by municipality in the broadcasts page or in the annual balance sheet page of our website.

Real-time, high-definition maps also allow you to view your exposure hour by hour throughout the day near you and street by street. 

You will find additional information about the exhibition in the documents: Pollution near traffic et What pollution throughout the day. 

Concerning the preferred means of transport, from the point of view of air pollution, motorists are very exposed to the latter, being located in the traffic flow and the air intakes being close to the exhaust pipes. By comparison, pedestrians and cyclists are less exposed, especially if they use routes specifically designed for their travel (cycle lanes or paths or bus lanes). Travel away from heavily trafficked routes (journeys along secondary routes, passing through parks, etc.) should be favored as much as possible.

In the metro or RER, air quality is mixed. However, air pollution is of a different nature than in the outside air: particles are present in greater quantities, while nitrogen dioxide (emitted by the combustion of heat engines) is present in much greater quantities. small quantities. In a recent report, theANSES (National Agency for Food, Environmental and Occupational Health Safety) indicated that "Available data show greater oxidative stress for particles from underground railway enclosures and suggest increased toxicity in terms of systemic inflammation and pulmonary."

However, in view of the time spent in these environments, ANSES also recalled that "the public health priority concerns the reduction of ambient air pollution as a whole." In this context, the use of less polluting means of transport than road transport, including rail transport, remains to be encouraged. The air pollution suffered by road transport users appears more worrying for health than air pollution from underground railway enclosures taking into account the high concentrations in road traffic for several pollutants whose toxicity is proven, in particular: the number of fine particles, soot carbon, gases such as carbon monoxide, nitrogen dioxide. 

Discover the ANSES report “Air pollution in underground railway enclosures and risks for workers’ health.”

The plume of pollution produced by the Paris metropolitan area can extend over more than 50 km for nitrogen oxides and several hundred kilometers for ozone.

Consult all our pollution maps.

Wood heating generates potentially significant emissions of atmospheric pollutants, including fine particles (PM), carbon monoxide (CO), Volatile Organic Compounds (VOC) and Polycyclic Aromatic Hydrocarbons (PAH).

Based on current knowledge, these emissions appear to be very different depending on whether it is an individual, collective or industrial installation. In addition, a great variability in environmental and energy performance exists between the different technologies (Flamme Verte device versus old device).
The quality of the wood used and its humidity also have an influence on emission levels.

Airparif is not mandated to manage the nuisances linked to the use of wood heating and the related regulations.

For more information, we invite you to consult the website of the Regional and Interdepartmental Directorate for the Environment and Energy (DRIEE) Île-de-France.

More informations : http://biensechaufferaubois.ademe.fr/ et https://www.iledefrance.fr/chauffages
 

In order to obtain answers relating to the wearing of so-called "anti-pollution" masks, we invite you to consult the following recent publications from the National Agency for Health Safety, Food, Environment and Work (ANSES): 

- News “So-called “anti-pollution” masks: insufficient data to attest to a health benefit and recommend their use”  

- The opinion and the collective expert report entitled “Evaluation of the expected health benefit of so-called anti-pollution respiratory devices”

You can also contact the competent organizations on the health effects of pollution, such as theRegional Health Observatory (Intergovernmental Panel on Climate Change) and the Regional Health Agency.

Our atmosphere is made up of 78% nitrogen, 21% oxygen and 1% of so-called rare gases (argon, neon and helium, in particular). In addition to these gases, other compounds (gases and particles) are considered pollutants when they present a nuisance or a risk to health and the environment.

Visit our Air Pollutants page to find out more.

The measurement of emissions linked to airport platforms takes into account the following parameters:

• Emissions from aircraft and ground activities (excluding road traffic induced in the public areas of the platforms).
• Aircraft emissions (engine combustion) calculated according to the LTO (Landing Take Off) cycle defined by the International Civil Aviation Organization (ICAO) with durations adapted to the Ile-de-France platforms. This cycle covers the approach, taxiing, takeoff and climb phases, below the first 1000 meters. Beyond 1000 meters, aircraft emissions are considered negligible for the quality of the air breathed by Ile-de-France residents.
• Particle emissions linked to brake, tire and track abrasion are also included.
• Activities on the ground: the thermal power plants of the airport platforms, the APUs (Auxilary Power Units) used to supply the plane with electricity and for air conditioning as well as the GPUs (Ground Power Units) which are mobile units on the platform which can power planes with electricity instead of APUs.

For further information relating to airport pollution in Ile-de-France, you can consult this page.

- For requests concerning Paris:

• If it is a professional activity, you can contact the Action Office against professional nuisances (Paris Town Hall)
• If the activity is not professional, you can contact the Housing and Habitat Department.
•   If the request concerns a combustion device, with a potential risk of CO poisoning, you can contact the central laboratory of the Police Prefecture (LCPP.)

- For requests concerning the Little and Great Crown:
You can contact the Hygiene department of your municipality or your town hall

The impact of pollution depends on our state of health, the concentration of pollutants in the air, the duration of exposure, and the amount of physical effort we make. 

Pollutants are irritating and aggressive gases or particles which penetrate more or less far into the respiratory system and which can induce respiratory or cardiovascular effects such as: 

• An increase in respiratory conditions: bronchiolitis, rhinopharyngitis, etc.
• A deterioration of the ventilatory function: decrease in the respiratory capacity, excess of cough or asthma attacks.
• Bronchial hypersecretion.
• Increased eye irritation.
• An increase in cardiovascular morbidity (fine particles).
• A degradation of the body's defenses against microbial infections.
• Impact on short-term mortality from respiratory or cardiovascular conditions (sulfur dioxide and fine particles).
• Impact on long-term mortality due to mutagenic and carcinogenic effects (fine particles, benzene).

The air quality data recorded by Airparif and other French air quality monitoring associations are used by organizations such as the InVS (National Health Surveillance Institute) or theORS (Regional Health Observatory) to assess the impact of this pollution on health through epidemiological studies.

To find out more, see our file Health issues linked to air pollution

To contact the Île-de-France Regional Health Agency.

The French Atmo index, used until now and for around twenty years, characterizes the ambient air quality of a day for the Paris metropolitan area. Its scale varies from 1 to 10, with 6 qualifiers and 3 colors. To complete this information, Airparif participated in the establishment of a European air quality index (Citeair project). The scale extends from 0 to over 100, with 5 qualifiers and 5 colors. This new index concerns ambient pollution but also pollution near traffic, with an update every hour. It allows you to compare the air quality of around a hundred cities (see the website www.airqualitynow.eu). The redesign of the Airparif website was an opportunity to further promote the European index, and to roll it out across the Île-de-France region:

• The daily regional map now bears its colors.
• From the home page, you have the choice between the French or European index for the Paris metropolitan area.
• From there, you can access information by department (European index of the department and associated departmental map).
• Finally, the air quality indices by municipality are based on the European index.

The levels of air pollution measured in London and Paris are very similar, the sizes of these two cities being very similar as well as the weather conditions to which they are subject.

Airparif carries out an emissions inventory, both for atmospheric pollutants and for the main greenhouse gases. It allows us to know the geographical distribution of emissions, their evolution over time, and the responsibility of the different sources.

The emissions inventory is a valuable tool for identifying the sources of pollutants on which actions would be most effective and for testing reduction scenarios taking these two issues into account.

Synthetic, the three major sources of emissions, both for atmospheric pollutants and for greenhouse gases, are:

• The residential and tertiary sector, due to heating.
• Transportation.
• Industrial activities (industry, construction sites, energy and waste).

For CO2, these three sectors account for almost 90% of emissions.

Check out the shows page and more information.

As part of our activities, we broadcast, twice a week, the Paris allergo-pollen bulletin written by the RNSA (National Aerobiological Surveillance Networks) whose analyzes are carried out by the SPSE (Paris Environmental Health Service).
As such, we are dependent on their sending and only have a relay role. 

For further information, we invite you to consult the RNSA website.

For your information, the national aerobiological monitoring network (RNSA) has created a medical information site on vegetation in the city, with the aim of helping green space services and individuals manage their plant heritage and limit the allergenic potential of urban plantations.