The 65-year-old music icon, who was joined onstage by his two sons, was presented with award, which he in turn presented back to his sons as a gesture to "encourage their generation to care about the planet," reported People magazine.
"We have to love our planet, we have to want to make it more green. We have to make sure that we can sustain the planet and make sure that people are able to survive as it has always been meant to be," Wonder said.
"I've always been passionate about it but obviously as time has gone and I've been blessed to live some minutes in life, I've had the opportunity to see the changes in the weather.
"And to those who think that in a normal climate, when it's the reverse to what it's supposed to be, then there's something wrong with them," he said.
Wonder then donated his harmonica to Global Green to auction off, adding, "One that has a lot of spit in it, so you can raise money for a good cause.