Addressing NO2 levels requires a multi-pronged approach tailored to the Cambodian landscape:

Nitrogen Dioxide (NO2) is a reddish-brown gas that is a major component of air pollution. It belongs to a group of highly reactive gases known as oxides of nitrogen (NOx). In the context of Cambodia’s growing economy, NO2 is primarily a byproduct of high-temperature combustion. Primary Sources of NO2 in Cambodia

The Ministry of Environment (MoE) has made significant strides in monitoring air quality. In recent years, the installation of air quality monitoring stations across Phnom Penh has allowed for real-time tracking of PM2.5 and NO2.

High levels of NO2 can irritate the airways in the human respiratory system. Such exposures over short periods can aggravate respiratory diseases, particularly asthma, leading to hospital admissions.

While Cambodia is moving toward renewables, the reliance on diesel generators during peak hours or in rural areas adds to the localized NO2 concentration. The Impact on the Khmer Population

Children and the elderly in Khmer communities are at the highest risk. Developing lungs in children are particularly sensitive to the corrosive nature of the gas.