The number of people exposed to unhealthy levels of particles from wildfire smoke increased 27-fold in the past decade

The five-year average of people exposed to at least one day of 100µg/m³ or more of fine particulate matter pollution (PM2.5) from smoke

10m people

8.3m

people

8m

2020 was an extreme year for

wildfires, causing a large spike

in the five-year average

6m

4m

2m

311k

people

0

2010

2012

2014

2016

2018

2020

10m people

8.3m

people

8m

2020 was an extreme year for

wildfires, causing a large spike

in the five-year average

6m

4m

2m

311k

people

0

2010

2012

2014

2016

2018

2020

2020 was an extreme year for

wildfires, causing a large spike

in the five-year average

10m people

8.3m

people

8m

6m

4m

2m

311k

people

0

2010

2012

2014

2016

2018

2020

2020 was an extreme year for

wildfires, causing a large spike

in the five-year average

10m people

8.3m

people

8m

6m

4m

2m

311k

people

0

2010

2012

2014

2016

2018

2020

2020 was an extreme year for

wildfires, causing a large spike

in the five-year average

10m people

8.3m

people

8m

6m

4m

2m

311k

people

0

2010

2012

2014

2016

2018

2020