What affects air quality?
Air quality can be impacted by various pollutants and weather events. Air pollutants that threaten the quality of our air include ozone, nitrogen oxides, carbon monoxide and sulphur dioxide. If these pollutants are present in the air at high levels, they can become hazardous to us and our environment. Pollutant levels are influenced by air movements. Calm air movements, with little winds, mean that pollutants cannot disperse which causes them to build up to high levels. Whereas, turbulent air movements, where strong winds blow, pollutants can disperse quickly causing pollutant levels to drop.
Poor air quality can also be a result of extreme weather events such as dust storms and bushfires. They affect air quality immediately by causing:
– A decrease in air quality
– Health problems due to inhalation of fine particles, which may increase the chance of respiratory and cardiovascular disease particularly in children, and cause harm to the elderly and those with pre-existing medical conditions
– Reduction in visibility
– Residues on surfaces
Bushfires also release large amounts of substances which can result in the creation of ozone and carbon dioxide into the atmosphere. This has the potential for widespread damage to property, the environment, and human life.