👉 Jun fumes, also known as "summer haze" or "smog," are a common environmental issue that occurs during hot summer months when high temperatures and low wind conditions trap pollutants in the air. These pollutants primarily include particulate matter (PM2.5 and PM10), nitrogen oxides (NOx), volatile organic compounds (VOCs), and ozone. The combination of sunlight, heat, and stagnant air leads to chemical reactions that form these harmful substances, reducing air quality and posing health risks such as respiratory issues and exacerbated asthma.