Ventusky: Weather Forecast Maps

Map shows concentration of carbon monoxide at 10 meters above ground. About half of the carbon monoxide in Earth's atmosphere is from the burning of fossil fuels and biomass (such as forest and bushfires). Most of the rest of carbon monoxide comes from chemical reactions with organic compounds emitted by human activities and plants. Carbon monoxide is a temporary atmospheric pollutant in some urban areas, chiefly from the exhaust of internal combustion engines.