Kunming pollen concentration

The third floor. According to the weather forecast of Kunming, on June 38, 2023+10/October 3, the pollen index of Kunming was predicted to be Grade 3, and the pollen concentration in suburbs and urban areas was high. Pollen concentration refers to the number of pollen grains per 1000 square millimeter in the air. Because the pollen concentration has obvious regional and seasonal characteristics, the distribution of trees and flowers in different regions is obviously different.