Is human pollution causing clouds to form near the edge of space?

It's a good time to look for noctilucent clouds in the north. Noctilucent is a good description of the beautiful cloud formations. They can be seen glowing against the western sky after the sun sets.

Noctilucent clouds are the highest known clouds in the atmosphere and are located at an altitude of 80 km. The Krmn line is defined as being 100 km high.

Noctilucent clouds are not known. Water must condense around a dust grain in a cloud. Understanding how such material gets high in the atmosphere is a problem. The dust is thought to be caused by the disintegration of meteorites.

There is a chance that pollutants reaching the upper atmosphere are acting as nuclei. It's possible that industrial pollution is to blame for noctilucent clouds not being seen before 1885.