The prime minister said that World Environment Day is a day to bow to mother earth and to "reaffirm our pledge to protect the environment, making our planet cleaner and greener".
"We are blessed to be a part of a culture where living in complete harmony with the environment is central to our ethos," Modi said.
"Let's ensure that even the smallest step we take in our daily lives will be an effort towards conserving nature and natural resources," he said.