In the air of Mogilev, in the area of Pervomaiskaya Street,10 on September 13, 2023 the average daily concentration of nitrogen dioxide exceeded the MPC standard by 1.1 times, in the area of Kashtanova street, 5 – 1.2 times (there was a south-east wind with a speed of 1-4 m/s, the air temperature ranged from +12.0°C to +23.8°C, relative humidity – from 42% to 81%). In the area of Kashtanova street,5 on September 14, 2023 at 07:00 the concentration of nitrogen dioxide was 1.4 MPC (a weak east wind was observed, the air temperature was +11.7°C, relative humidity – 71%). In the area of house Pervomaiskaya Street,10 on September 14,2023 at 19:00 the concentration of nitrogen dioxide was 2.0 MPC (there was a weak east wind, the air temperature was +15.5°C, relative humidity – 96%), the average daily concentration of nitrogen dioxide in the area of Pervomayskaya Street,10 exceeded the MPC standard by 2.2 times, in the area of Kashtanova Street,5 – by 1.2 times (there was a south-east, east, south wind with a speed of 1-4 m/s, the air temperature ranged from +11.7°C to +22.1°C, relative humidity – from 43% to 98%). In the area of Kashtanova street,5 on September 16,2023 at 07:00 the concentration of nitrogen dioxide was 1.2 MPC (there was a weak north-east wind, the air temperature was +9.6°C, relative humidity – 85%); the average daily concentration of nitrogen dioxide in the area of Pervomayskaya Street,10 and Kashtanova Street,5 exceeded the MPC norm by 1.6 three times (there was a south-east, north, north-east wind with a speed of 1 m/s, the air temperature ranged from +7.7°C to +18.4°C; relative humidity – from 40% to 98%). In the area of Pervomayskaya Street,10 on September 18 ,2023 the concentration of nitrogen dioxide at 01:00 was 1.2 MPC, in the area of Kashtanova Street,5 – 1.3 MPC (calm wind was observed, the air temperature was +10.9°C, relative humidity – 96%), at 07:00 in the area of house Pervomayskaya Street,10 – 1.3 MPC (south wind was observed at a speed of 1 m/s, the air temperature was +14.6°C, relative humidity – 77%), the average daily concentration of nitrogen dioxide on Chelyuskintsev Street,45 exceeded the standard by 1.5 times, in the area of Pervomayskaya Street,10 – by 2.4 times, in the area of Kashtanova street,5 – 1.7 times (there was a calm, south-west, south wind with a speed of 1-2 m/s, the air temperature ranged from +10.9°C up to +23.9°C; relative humidity – from 50% to 96%). In the area of Movchansky street, 4 on September 19,2023, the average daily concentration of nitrogen dioxide exceeded the MPC standard by 1.1 times, in the area of Pervomayskaya Street,10 – 1.5 times, in the area Kashtanova Street,5 – 1.3 times (there was a south-east, south wind with a speed of 1 – 4 m/s, the air temperature ranged from +13.3°C to +24.9°C, relative humidity – from 33% to 74%).
In the air of Zhlobin in the area of Prigorodnaya street,12 on September 14,2023, the average daily concentration of solid particles, fractions up to 2.5 microns in size was 1.71 MPC, the average daily concentration of solid particles, fractions up to 10 microns in size was 1.01 MPC (a south–east wind with an average speed of 2 m/s was observed, gusts up to 8 m/s, rain, air temperature ranged from +13.1°C to +24.3°C, relative humidity – from 46 % up to 93%), on September 18,2023, the average daily concentration of solid particles, fractions up to 2.5 microns in size was 1.08 MPC (south wind was observed with an average speed of 1 m/s, gusts up to 8 m/s, air temperature ranged from +10.7°C to +27.1°C, relative humidity – from 45% to 95%). In the specified area on September 19,2023, the average daily concentration of solid particles, fractions up to 2.5 microns in size was 2.37 MPC, the average daily concentration of solid particles, fractions up to 10 microns in size was 1.22 MPC (south wind with an average speed of 2 m/s, gusts were observed up to 12 m/s, rain, air temperature ranged from +10.7°C to +26.0°C, relative humidity – from 33% to 88%).
In the air of Novopolotsk in the area of residential building N135 on Molodezhnaya Street on September 21,2023 at 07:00 the concentration of solid particles (undifferentiated dust/aerosol composition) was 1.41 MPC (there was a south wind with a speed of 1 m/s, the air temperature was +12.2°C, relative humidity – 89%), in the 8th microdistrict - 1.27 MPC (calm was observed, the air temperature was +12.7° C, relative humidity – 88%).
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