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
11007excellentexcellent11excellent
100020excellentexcellent11excellent
090015excellentexcellent21excellent
080023goodexcellent31excellent
070026goodexcellent31excellent
060027goodexcellent31excellent
050019excellentexcellent21excellent
040019excellentexcellent21excellent
030019excellentexcellent21excellent
020020excellentexcellent21excellent
010024goodexcellent21excellent
000012excellentexcellent11excellent
23008excellentexcellent11excellent
22005excellentexcellent11excellent
21003excellentexcellent11excellent
20005excellentexcellent11excellent
19002excellentexcellent11excellent
18001excellentexcellent11excellent
17001excellentexcellent11excellent
16002excellentexcellent11excellent
15001excellentexcellent11excellent
14002excellentexcellent11excellent
13006excellentexcellent11excellent