Air pollution Hotspots are created by three main factors:
- low ventilation
- a high density of people or long dwell time
- high emission of pollution
These three factors often combine on city side-walks, where there is low ventilation due to city buildings and street canyons, masses of cars and buses pass regularly, and crowds of people walking throughout the day.
This buildup of pollution has a drastic effect on humans as they are areas that humans tend to dwell and spend plenty of time in, for example waiting for a bus or eating at an outdoor café. These are the areas where maximum air cleaning is needed because high concentrations of pollutants can be very dangerous to humans.
Airlabs technology can filter out the three most prominent forms of urban air pollution: NOx, particulate matter, and ozone. Learn more about the pollutants.
The EU mandated threshold for daily exposure to fine particles (PM2.5) is 25 µg/m3. NO2 is limited to a yearly average of 40 µg/m3. London surpassed its annual limits just 5 days into 2017!