"peak popularity" is a correct and usable phrase in written English.
It is typically used to describe the highest point of popularity or fame for a person, product, or trend. Example: During the 1980s, Madonna reached her peak popularity as the "Queen of Pop." Example: The iPhone reached its peak popularity in 2012 with the release of the iPhone 5.
The link between forest cover and water yield reached its peak popularity in the 1870s and 1880s before suffering scientific and popular criticism that led to its decline globally in the 1900s and on.
Oddly, though, Coney's peak popularity was not attained until the parks began to burn and crumble.
The compilation Absolute begins in exactly that kind of delirious pop daze, with a five-track assault from Scritti's period of peak popularity.
"Vern is always selected as one of the top designers," said Jon Hein, founder of jumptheshark.com, which tracks television shows from their peak popularity to their decline.
This high-concept thumb-biting failed to register during the meme's peak popularity, when enthusiastic participants generated up to seven posts a second.
In between rolls of antacid and scoops of ice cream, the unofficial finish to a fried-clam meal, we found that this summertime classic is even more fleeting than the season of its peak popularity.
The name Gary reached the peak of popularity in the US in the 1950s, helped by the popular and ruggedly masculine actor Gary Cooper (real name Frank).
Front porches on American homes were first popularized about the time that Hudson River School art was at its peak of popularity before the Civil War -- porches were considered perfect perches for looking at the landscape.
I was at school in the 00s during peak Pokémon popularity.
At its peak of popularity in the 1970s, Humbard's program attracted some 20 million viewers.
The mystery religions reached their peak of popularity in the first three centuries ad.
