PM
Particulate matter
What is it?
Particulate matter is a small solid or liquid particle. PM10 includes particles less than 10 µm in diameter, PM2.5 includes particles less than 2.5 µm in diameter.
Where does it come from?
The main source of fine particulate matter (PM2.5) in Ireland is from the burning of solid fuel for home heating (peat, coal, wood). PM2.5 is also generated by the wearing away of rubber tyres in traffic.
Why is it harmful?
PM2.5 is the air pollutant most harmful to human health. These particles are small enough to infiltrate deep into the lungs and bloodstream, causing respiratory damage, stroke and cardiovascular disease.
When does it cause the most harm?
High PM2.5 levels are of most concern during winter months as many households rely on the burning of solid fuels to heat their homes.
During hours with heavy traffic, PM2.5 levels also increase substantially in urban areas. Skipping the car is not an option for many as they people depend on their vehicles due to distance or work.
But minimising the use of our vehicles is the best thing we can do. If there are alternative means of travelling, consider using them.
During hours with heavy traffic, PM2.5 levels also increase substantially in urban areas. Skipping the car is not an option for many as they people depend on their vehicles due to distance or work.
But minimising the use of our vehicles is the best thing we can do. If there are alternative means of travelling, consider using them.