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
100010excellentexcellent11excellent
090010excellentexcellent11excellent
080010excellentexcellent11excellent
070014excellentexcellent21excellent
060020excellentexcellent31excellent
050036goodexcellent31excellent
040037goodexcellent41excellent
030046goodexcellent61excellent
020054goodexcellent61excellent
010047goodexcellent71excellent
000040goodexcellent51excellent
230034goodexcellent41excellent
220029goodexcellent41excellent
210024goodexcellent41excellent
200018excellentexcellent41excellent
190039goodexcellent41excellent
180026goodexcellent41excellent
170025goodexcellent41excellent
160025goodexcellent31excellent
150019excellentexcellent41excellent
140017excellentexcellent31excellent
130016excellentexcellent31excellent
120016excellentexcellent31excellent
110012excellentexcellent21excellent