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
20004excellentexcellent11excellent
19004excellentexcellent11excellent
1800109heavily pollutedexcellent11excellent
170024goodexcellent11excellent
16004excellentexcellent11excellent
15008excellentexcellent11excellent
140020goodexcellent11excellent
13006excellentexcellent21excellent
120029goodexcellent21excellent
11009excellentexcellent21excellent
100011excellentexcellent31excellent
090011excellentexcellent31excellent
080017goodexcellent41excellent
070019goodexcellent51excellent
060021goodexcellent41excellent
050020goodexcellent41excellent
040019goodexcellent41excellent
030015goodexcellent41excellent
020018goodexcellent41excellent
010017goodexcellent31excellent
000020goodexcellent41excellent
230023goodexcellent41excellent
220023goodexcellent31excellent
210018goodexcellent31excellent