Air pollution means contamination of air. This contamination takes place due to the pollutants present in the air. These pollutants can be Particulate Matter, Gaseous and Heavy Metals. Origin of air pollutants can be Natural or man-made.
Minor breathing discomfort to sensitive people
Breathing discomfort to the people with lungs, asthma and heart diseases
Breathing discomfort to most people on prolonged exposure
Respiratory illness on prolonged exposure
Affects healthy people and seriously impacts those with existing diseases
Outdoor air pollution is also known as Ambient air pollution. This pollution is caused by emissions from cars, trucks, industries, construction sites, and many more activities. These emitted pollutants are harmful to our health. Out of all pollutants, Fine Particulate matter is most harmful. Majority of the fine particulate matter comes from the burning of coal diesel and petrol by vehicles, power plants, industries and biomass burning.
Indoor air pollution is also known as household air pollution. It means contamination of air inside houses, buildings and work areas. Chulhas, dust & smoke contribute to household air pollution. Indoor Air pollution is equally, if not more harmful than Outdoor air pollution.
Poor air quality is due to various sources in & around Delhi-NCR:
According to IQAir World Air Quality Report 2019: