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
120010excellentexcellent11excellent
110013excellentexcellent11excellent
100015excellentexcellent21excellent
090018excellentexcellent21excellent
080026goodexcellent41excellent
070040goodexcellent51excellent
060037goodexcellent41excellent
050036goodexcellent41excellent
040037goodexcellent41excellent
030036goodexcellent31excellent
020039goodexcellent41excellent
010047goodexcellent31excellent
000041goodexcellent31excellent
230035goodexcellent31excellent
220031goodexcellent31excellent
210026goodexcellent31excellent
200023goodexcellent21excellent
190024goodexcellent21excellent
180015excellentexcellent21excellent
170016excellentexcellent21excellent
160011excellentexcellent11excellent
150015excellentexcellent21excellent
140015excellentexcellent21excellent
130014excellentexcellent21excellent