An air pollution monitor displays high PM2.5 and PM10 levels. This critical device is located on a busy city street, warning of unhealthy air quality.
Schlüsselwörter
air,
pollution,
monitor,
city,
environment,
health,
display,
indicator,
urban,
traffic,
road,
street,
digital,
carbon,
dioxide,
sensor,
gas,
emission,
particulate,
matter,
unhealthy,
risk,
warning,
modern,
technology,
daylight,
car,
building,
grey,
red,
white,
black,
measurement,
climate,
change,
global
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