Air
pollution is a huge problem, especially in Asia and there are severe health
risks associated with it. The air is being polluted when any pollutants are
released to the air that are dangerous to human health as well as the planet.

Air pollution usually comes from energy use and production. 1 Common
sources are engine vehicles, industrial factories and combustion devices.

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Pollutants that have raised public concern include nitrogen and sulfur dioxide,
ozone, particulate matter and carbon monoxide.

2

Air
pollution is known to cause several respiratory and heart conditions and
cancer. The respiratory diseases include asthma and air pollution can be fatal. Global warming is linked to poor air
quality, which has an impact on the heart and can worsen cardiovascular diseases.3
Outdoor air pollution can be checked and reduced
by using Air Quality Index (AQI), which tells how clean the air is. When
calculating the index, the content of many different pollutants can be taken
into consideration. These include sulfur dioxide (SO2), nitrogen
dioxide (NO2), inhalable particles (PM10), particulate
matter (PM2.5), ozone (O3), carbon monoxide (CO) and
sulfur compounds (TRS). In the stations located around Finland, not all of
these pollutants are calculated to determine the AQI. 4

1 Mackenzie 2016, “Air Pollution: Everything You Need to
Know”, https://www.nrdc.org/stories/air-pollution-everything-you-need-know#sec2.

2 World Health Organization, “Air Pollution”, http://www.who.int/topics/air_pollution/en/.

3 National Institute of Environmental Health Sciences,
“Air Pollution”, https://www.niehs.nih.gov/health/topics/agents/air-pollution/index.cfm.

4 Ilmatieteen laitos, “Ilmanlaatuindeksi”, http://ilmatieteenlaitos.fi/ilmanlaatuindeksi.

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