Close up portable air quality monitor detect PM , the low level is good air quality.

---

Size: 7360px × 4912px
Photo credit: © Norasit Kaewsai / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: , air, aqi, breath, care, danger, dangerous, detect, detector, device, digital, environment, environmental, equipment, fine, good, harmful, health, index, instrument, level, matter, measure, measurement, meter, microngrams, microns, monitor, particle, pm, , pollution, portable, quality, safe, sensitive, sensor, smog, unhealthy