Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0500300severely pollutedexcellent21excellent
0400300severely pollutedexcellent11excellent
0300300severely pollutedexcellent11excellent
0200300severely pollutedexcellent11excellent
0100300severely pollutedexcellent11excellent
0000300severely pollutedexcellent11excellent
2300300severely pollutedexcellent11excellent
2200300severely pollutedexcellent21excellent
2100300severely pollutedexcellent21excellent
2000300severely pollutedexcellent11excellent
1900300severely pollutedexcellent11excellent
1800300severely pollutedexcellent11excellent
1700300severely pollutedexcellent11excellent
1600300severely pollutedexcellent11excellent
1500300severely pollutedexcellent11excellent
1400152heavily pollutedexcellent11excellent
130026goodexcellent11excellent
120013excellentexcellent11excellent
110020excellentexcellent42excellent
100061lightly pollutedexcellent31excellent
090083lightly pollutedexcellent21excellent
080014excellentexcellent21excellent
070024goodexcellent21excellent
060010excellentexcellent11excellent