UNICEF's Innocenti Research Center studied 39 countries from the Organization for Economic Co-operation and Development (OECD) and the European Union (EU) according to different criteria, including pesticide use, home humidity, lead exposure, access to light and waste generation.
While Spain, Ireland and Portugal performed relatively well, none of the countries studied were found to provide healthy environments for children, according to the report.
"Not only are the majority of rich countries failing to provide healthy environments for children within their borders, they are also contributing to the destruction of children's environments in other parts of the world," said the center's director Gunilla Olsson in a statement.
The report noted, however, that less wealthy countries in Latin America and Europe had a lower impact on the general state of the planet compared to some wealthier states studied.
While Finland, Iceland and Norway were in the lead for providing a healthy environment for their own youth, they were in last place in terms of their impact on the planet for their emissions rates, electronic waste volume and consumption level.
In Iceland, Latvia, Portugal and Britain, one in five children is exposed to damp and mold in their home, while in Cyprus, Hungary and Turkey, more than one child out of four was affected.
Many children breathe toxic air both indoors and out, especially in Mexico, although not in Finland and Japan, the report also found.
In Belgium, Israel, the Netherlands, Poland, the Czech Republic and Switzerland, more than one in twelve children are exposed to high levels of pesticide pollution, the report said.
In the 39 countries studied, more than 20 million children had high levels of lead in their blood, it added.