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
030017goodexcellent11excellent
02005excellentexcellent11excellent
01005excellentexcellent11excellent
00004excellentexcellent11excellent
23008excellentexcellent21excellent
22006excellentexcellent21excellent
21005excellentexcellent11excellent
20004excellentexcellent11excellent
19004excellentexcellent11excellent
1800109heavily pollutedexcellent11excellent
170024goodexcellent11excellent
16004excellentexcellent11excellent
15008excellentexcellent11excellent
140020goodexcellent11excellent
13006excellentexcellent21excellent
120029goodexcellent21excellent
11009excellentexcellent21excellent
100011excellentexcellent31excellent
090011excellentexcellent31excellent
080017goodexcellent41excellent
070019goodexcellent51excellent
060021goodexcellent41excellent
050020goodexcellent41excellent
040019goodexcellent41excellent