2024 Environment Day Theme. His highness sheikh mohamed bin zayed al nahyan, president of the united arab emirates, announced that 2024 will be the continuation of the “year of sustainability”, building on the success of last year’s theme and.  — world environment day is annually celebrated on june 5, and in 2024, it is being observed today, wednesday.

World environment day is the biggest international day for the environment. The theme highlights critical environmental challenges affecting communities and ecosystems worldwide.