When is rush hour in Paris?

Rush hour in Paris typically occurs twice a day: in the morning between 8:00 AM and 10:00 AM, and in the evening between 6:00 PM and 8:00 PM. During these times, traffic congestion can be heavy in the city centre and on major roads leading into and out of the city. Public transportation, such as the metro, buses, and RER trains, can also be very crowded during these periods.