The maximum speed will be lowered by 20 km/h in Île-de-France, within a perimeter between the A86, announced Bruno Retailleau, Sunday evening, after a crisis meeting organized in his ministry on the current scorching episode and which must intensify in the coming hours. An announcement confirmed a few minutes later by the Paris police headquarters in a statement, indicating a number of restrictions and recommendations.
The decision is made due to the concentration of pollutants in the air in Île-de-France, favored by anticyclone responsible for high temperatures and fixes pollutants in the air, these cannot be dispersed in the environment (therefore heating the air). This decision is regularly taken by the police headquarters when crossing air pollution.
Ozone pollution in Île-de-France-Implementation of restrictive measures, in particular:
🔵 The reduction in the maximum speed authorized within the perimeter delimited by the A86 to the exclusion of this;
🔵 and the bypass by the Ile -de -France ring road… pic.twitter.com/pEsMS6T4LB– Police prefecture (@prefpolice) June 29, 2025
“The hot weather and the sunshine announced until the middle of next week being conducive to the increase in ozone concentrations, the prefect of police decided to implement (…) the system for combating pollution,” wrote the police prefecture this Sunday evening. “These measures will be applied each day between 5:30 and midnight,” up to the lifting of the decree, “she said.
The police prefecture confirms the lowering of the speed of 20 km/h on the roads currently limited to 130, 110, 90 and 80 km/h (with a lowering of 10 km/h only for the latter). Transit heavy goods vehicles over 3.5 tonnes must also bypass “by the Ile -de -France ring road,” said the Paris police headquarters in its press release. Controls will be set up, provides PP.
The use of the car to be avoided, the telework to be favored
“It is recommended to limit, as far as possible, travel by car, to favor telework and, if necessary, to practice carpooling,” writes the police prefecture. And the authorities to add: “It is also recommended to limit exposure to pollution, especially the most vulnerable people, remaining indoors during the hottest hours. »»
According to Air Parif forecasts, responsible for measuring air quality in the region, this quality was “degraded” this Sunday, but will be “bad” on Monday. “The summer weather conditions, warm and sunny, are favorable to the formation of ozone, the majority pollutant of the Ile -de -France air. Air quality will be average in the Île-de-France, ”writes the forecaster on his website.
France has undergone since June 19 its 50th wave of national heat since 1947, and its 33rd in the 21st century, with already temperatures around 40 degrees in the south this weekend, and it will further intensify in the coming days.
