On Friday evening, smog hangs over Poland. There are places where the air quality is bad. Standards were exceeded at many measuring stations in southern Poland. Check what it’s like in your area.
According to data from 9 p.m., the worst air quality in terms of PM10 dust was recorded in Nowa Ruda, where the measuring station indicated 309 micrograms per cubic meter (µg/m3), i.e. 618 percent of the daily norm. Residents breathed unhealthy air Nowy Sącz (128 µg/m3, i.e. 256 percent of the daily norm), and the average – Kłodzko (93 µg/m3, or 186 percent of the daily norm).
In the evening, exceedances of the standards for PM2.5 dust were also observed. IN Kłodzko the measured concentration was 91 µg/m3, i.e. 364 percent of the daily norm, and in Skarżysko-Kamienna – 63 µg/m3, i.e. 252 percent of the daily norm.
Average air quality was also observed at other measurement stations in southern Poland, both in terms of PM10 and PM2.5 dust content.
When the air quality is good
We talk about good quality air when the concentration of harmful dust does not exceed:
- in the case of PM10 dust – 50 micrograms per cubic meter (µg/m3);
- in the case of PM2.5 dust – 25 µg/m3.
What is PM10
PM10 is a mixture of particles suspended in the air with a diameter not exceeding 10 micrometers. Its occurrence is related, among other things, to the combustion processes of solid and liquid fuels.
What is PM2.5
PM2.5 is a mixture of particles suspended in the air with a diameter not exceeding 2.5 micrometers. According to the World Health Organization, it is the most harmful atmospheric pollutant to humans. It reaches not only the respiratory system, but also the circulatory system. It stays in our body much longer.
Main photo source: Shutterstock