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
21004excellentexcellent11excellent
20003excellentexcellent11excellent
19003excellentexcellent11excellent
18005excellentexcellent11excellent
17004excellentexcellent11excellent
16003excellentexcellent11excellent
15003excellentexcellent11excellent
14007excellentexcellent11excellent
13006excellentexcellent11excellent
12009excellentexcellent11excellent
11009excellentexcellent11excellent
10009excellentexcellent11excellent
090014excellentexcellent31excellent
080013excellentexcellent31excellent
07008excellentexcellent21excellent
06008excellentexcellent21excellent
05008excellentexcellent21excellent
04008excellentexcellent21excellent
03008excellentexcellent21excellent
02008excellentexcellent11excellent
01008excellentexcellent21excellent
00008excellentexcellent11excellent
23008excellentexcellent11excellent
22008excellentexcellent11excellent