Where Data Tells the Story
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This visualization explores changes in PM2.5 pollution levels across Nepal from 1998 to 2023, presented at three administrative levels: all 77 districts, the 7 provinces, and the country as a whole.
PM2.5 is fine particulate matter with a diameter of 2.5 micrometers or less. These tiny particles are a type of air pollutant and can remain suspended in the air for long periods of time. When inhaled, they can penetrate deep into the lungs and even enter the bloodstream, causing health problems such as respiratory issues, heart disease, and worsening of conditions like asthma.
Major sources of PM2.5 are vehicle emissions, industrial processes, forest fires, dust, and certain chemical reactions in the atmosphere.
PM2.5 concentrations are usually measured in micrograms per cubic meter of air (µg/m³).