Overview

• Speed limits have been reduced region-wide from 05:30 to midnight, with autoroutes capped at 110 km/h instead of 130 km/h, secondary highways cut from 110 km/h to 90 km/h, and other major roads limited to 70 km/h.
• Heavy trucks over 3.5 tonnes are required to bypass central Paris via the rocade francilienne to cut vehicular emissions.
• Open-air burning is banned and maintenance work that emits volatile organic compounds has been postponed under the prefecture’s emergency measures.
• Airparif’s forecast predicts ozone concentrations will exceed the 180 µg/m3 information threshold, classifying the episode as persistent and potentially harmful.
• Residents are advised to reduce car use, favor carpooling, and stay indoors during peak heat hours to limit exposure, especially those with respiratory conditions.