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
13006excellentexcellent11excellent
12006excellentexcellent11excellent
110011excellentexcellent21excellent
100015excellentexcellent21excellent
090028goodexcellent51excellent
080037goodexcellent61excellent
070039goodexcellent51excellent
060027goodexcellent41excellent
050025goodexcellent31excellent
040026goodexcellent21excellent
030035goodexcellent31excellent
020017excellentexcellent21excellent
010020excellentexcellent31excellent
000025goodexcellent21excellent
230032goodexcellent21excellent
220038goodexcellent31excellent
210015excellentexcellent21excellent
200010excellentexcellent21excellent
19009excellentexcellent11excellent
18009excellentexcellent11excellent
170011excellentexcellent11excellent
160016excellentexcellent11excellent
150010excellentexcellent21excellent
14008excellentexcellent11excellent