Carbon Monoxide Concentration - Indian Cities

Carbon Monoxide Concentration in Indian Cities (as of 29 Apr 2022)

Colorless, odorless, and poisonous, carbon monoxide is a gas that comes from burning fossil fuels, like the gas in cars, and burning vegetation. Carbon monoxide is not one of the gases that is causing global warming, but it is one of the air pollutants that leads to smog.

Carbon monoxide is present in Earth's atmosphere at very low concentrations. A typical concentration of CO in Earth's troposphere is around 100 ppb (parts per billion; meaning one hundred out of every billion air molecules is carbon monoxide), although especially clean air can have concentrations as low as 50 ppb. Carbon monoxide has a typical "lifespan" of several months in Earth's atmosphere. The gas eventually reacts with oxygen (O2) to form carbon dioxide (CO2).