Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
090025goodexcellent21excellent
080028goodexcellent31excellent
070024goodexcellent31excellent
060023goodexcellent31excellent
050024goodexcellent31excellent
040023goodexcellent31excellent
030024goodexcellent21excellent
020024goodexcellent31excellent
010023goodexcellent31excellent
000027goodexcellent31excellent
230025goodexcellent31excellent
220021goodexcellent21excellent
210020goodexcellent31excellent
200022goodexcellent21excellent
190022goodexcellent31excellent
180024goodexcellent21excellent
170016goodexcellent21excellent
160011excellentexcellent11excellent
150011excellentexcellent11excellent
140010excellentexcellent11excellent
130010excellentexcellent21excellent
120013goodexcellent21excellent
110013goodexcellent11excellent
100021goodexcellent21excellent