How do you read an air purifier reading?

What does PM 2.5 and PM 10 mean?

PM2. 5 refers to the atmospheric particulate matter that has a diameter of less than 2.5 micrometres, which is about 3% of the diameter of human hair. … PM10 are the particles with a diameter of 10 micrometers and they are also called fine particles.

How do air purifiers measure air quality?

The technology. Just about every air purifier that has a built-in air quality monitor (including our own) uses a dust sensor like this one to detect particulate matter. These devices use an infrared beam and a sensor. … The sensor picks up on this change, and makes a general estimation of the air quality.

What is a good PM 2.5 reading?

24-Hour PM2.5 Levels (μg/m3)

PM2.5 Air Quality Index
0 to 12.0 Good to 50
12.1 to 35.4 Moderate 51 to 100
35.5 to 55.4 Unhealthy for Sensitive Groups 101 to 150
55.5 to 150.4 Unhealthy 151 to 200

What does AQI 154 mean?

At 101 to 150, the air is considered unhealthy for sensitive groups: The elderly, children, and people with lung disease are vulnerable to the effects of ozone pollution; and the elderly, children and those with heart and lung disease are at risk from particulate matter.

IT IS AMAZING:  Question: What is HEPA health?

What are the 6 levels of air quality?

These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.

How bad is PM2 5?

For PM2. 5, short-term exposures (up to 24-hours duration) have been associated with premature mortality, increased hospital admissions for heart or lung causes, acute and chronic bronchitis, asthma attacks, emergency room visits, respiratory symptoms, and restricted activity days.

What is a safe PM 2.5 level?

In the US, exposure to very fine particulate matter known as PM2. 5 is considered safe by the US Environmental Protection Agency’s national ambient air quality standards so long as a person breathes in an average of 12 micrograms per cubic meter of air (μg/m3) or less per day over the duration of a year.

How safe are PM2 5 filters?

5 filter provide protection with less strain on your heart. When combined with a fitted multilayer cotton mask, PM2. 5 filters can block the vast majority of airborne particulates, with significantly less inhalation resistance than an airtight medical respirator like the N95 or KN95.