On Friday evening, smog appeared in some regions of the country. Where is the air of poor and unhealthy quality? Check on the map.
On Friday, around 9:30 p.m., the worst air quality in terms of PM10 dust, defined as poor, occurred in Nowa Ruda. The measuring station showed the concentration of harmful particles in the air at 222 micrograms per cubic meter (µg/m3), which means 370 percent of the daily norm. IN Łomża people also breathed poor quality air. The concentration of harmful particles there was 144 µg/m3 (240% of the daily norm).
When it comes to air pollution in terms of PM2.5 dust, it was of poor quality in Lębork. There, 127 µg/m3 was recorded (352.8% of the daily norm). IN Działdowie people also breathed air of poor quality – the measuring station showed 97 µg/m3 (269.4% of the daily norm).
Many other cities reported unhealthy and average air quality.
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 – 60 micrograms per cubic meter (µg/m3);
- in the case of PM2.5 dust – 36 µg/m3;
- in the case of benzene – 10 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.
What is benzene
Benzo(a)pyrene is a carcinogenic and mutagenic chemical compound that is a representative of polycyclic aromatic hydrocarbons (PAHs). Benzo(a)pyrene has low acute toxicity and high chronic toxicity, which is related to its ability to accumulate in the body.
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