Face masks can protect against very high air quality index (AQI) readings like there were last October in the west with all the fires.
High 2.5 PMI (particulate mass index) readings are the most dangerous.
These 2.5 PMI readings were like in the 400 to 500 range across the west. I wore an N95 outside working while being exposed to our high Seattle area levels. Normal and safe readings are below 50. Today near Seattle, an air quality map showed excellent 2.5 PMI readings around 2. (Please note that is only a reading for those micro particles and that there are other gaseous measurements for air quality.)
On one of those very high level days last October I drove past a middle-age jogger who was working up a sweat in air so dangerous it looked like thick fog ! Perhaps he was unknowingly taking unnecessary risks...
Masks serve various purposes--one of them stopping the dangerous micro particulates from entering the deepest levels of the lungs, and those tiny impurities stay there for life.
Face masks can protect against very high air quality index (AQI) readings like there were last October in the west with all the fires.
High 2.5 PMI (particulate mass index) readings are the most dangerous.
These 2.5 PMI readings were like in the 400 to 500 range across the west. I wore an N95 outside working while being exposed to our high Seattle area levels. Normal and safe readings are below 50. Today near Seattle, an air quality map showed excellent 2.5 PMI readings around 2. (Please note that is only a reading for those micro particles and that there are other gaseous measurements for air quality.)
On one of those very high level days last October I drove past a middle-age jogger who was working up a sweat in air so dangerous it looked like thick fog ! Perhaps he was unknowingly taking unnecessary risks...
Masks serve various purposes--one of them stopping the dangerous micro particulates from entering the deepest levels of the lungs, and they stay there.
Face masks can protect against very high air quality index (AQI) readings like there were last October in the west with all the fires.
High 2.5 PMI (particulate mass index) readings are the most dangerous.
These 2.5 PMI readings were like in the 400 to 500 range across the west. I wore an N95 outside working while being exposed to our high Seattle area levels. Normal and safe readings are below 50. Today near Seattle, an air quality map showed excellent 2.5 PMI readings around 2. (Please note that is only a reading for those micro particles and that there are other gaseous measurements for air quality.)
On one of those very high level days last October I drove past a middle-age jogger who was working up a sweat in air so dangerous it looked like thick fog ! Perhaps he was unknowingly taking unnecessary risks...
Masks serve various purposes--one of them stopping the dangerous micro particulates from entering the deepest levels of the lungs.
Face masks can protect against very high air quality index (AQI) readings like there were last October in the west with all the fires.
High 2.5 PMI (particulate mass index) readings are the most dangerous.
These 2.5 PMI readings were like in the 400 to 500 range across the west. I wore an N95 outside working while being exposed to our high Seattle area levels. Normal and safe readings are below 50. Today near Seattle, an air quality map showed 2.5 PMI readings around 2. (Please note that is only a reading for those micro particles and that there are other gaseous measurements for air quality.)
On one of those very high level days last October I drove past a middle-age jogger who was working up a sweat in air so dangerous it looked like thick fog ! Perhaps he was unknowingly taking unnecessary risks...
Masks serve various purposes--one of them stopping the dangerous micro particulates from entering the deepest levels of the lungs.
Face masks can protect against very high air quality index (AQI) readings like there were last October in the west with all the fires.
High 2.5 PMI (particulate mass index) readings are the most dangerous.
These 2.5 PMI readings were like in the 400 to 500 range across the west. I wore an N95 outside working while being exposed to our high Seattle area levels.
On one of those very high level days, I drove past a middle-age jogger who was working up a sweat in air so dangerous it looked like thick fog ! Perhaps he was unknowingly taking unnecessary risks...
Masks serve various purposes--one of them stopping the dangerous micro particulates from entering the deepest levels of the lungs.