SMHI International Consulting Services

Air Quality At And Around Roads



Many municipalities have problems with high particulate levels. SIMAIR-road is an Internet based system that helps municipalities, air control associations and other regional operators to quickly and cost efficiently assess the levels of regulated air pollutants in the surrounding areas around roads.

SIMAIR-road is used in the air quality control in municipalities and cities. The Internet based system works as a cost efficient complement to measurements and as a tool in the physical planning.

SIMAIR-road is appropriate to use for evaluations of air quality in streets and near open roads. For evaluations further away from the road, in areas where contributions from several roads are of importance, and at junctions we recommend SIMAIR-crossing.

One simple click…

SIMAIR-road shows a map of your municipality or city. All necessary information about meteorology, dispersion, concentrations from long range transport of air pollutants and urban background are already stored in the system. You can easily add data, if you have own measurements from the city.

For each road link, information is stored regarding the amount of traffic, type of vehicles, width of the road, speed limit etc. from the Swedish Transport Administration’s national road database. You can modify the information for more precise model results.

The databases in SIMAIR-road are updated with data one year at a time. Scenarios for the year 2020 are available in the system.

… initiates advanced calculations

By clicking on a road link, an advanced dispersion calculation is initiated, showing the environmental quality norms for a substance and the risks of it being exceeded. The total levels can also be divided up into pollutant contributions from abroad, from other areas in Sweden, from the municipality as a whole and from the traffic on the road link in question.

You can compare SIMAIR-road results with your own measurements and then receive an overall view of the air quality.

Get started quickly

SIMAIR-road does not require an installation, you simply log in via your regular Internet browser. The results can be exported as images, shape, pdf and Excel files. We offer trainings on demand and can help you to get started with SIMAIR-road.

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