NO2 (Nitrogen Dioxide)

Nitrogen dioxide (NO2) is a reddish-brown gas produced mainly from vehicle emissions, industrial processes, and combustion of fossil fuels. It is a significant air pollutant that can irritate the respiratory system, worsen asthma, and decrease lung function. NO2 also contributes to the formation of ground-level ozone and particulate matter, which further harm air quality and health. While some nitrogen dioxide naturally occurs in small amounts, elevated levels from human activities pose health risks, especially in urban areas with high traffic and industrial activity. Monitoring and controlling NO2 emissions are essential for protecting public health and the environment.