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
20008excellentexcellent11excellent
19007excellentexcellent11excellent
18006excellentexcellent11excellent
170012excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent
14006excellentexcellent11excellent
13005excellentexcellent11excellent
12008excellentexcellent11excellent
11006excellentexcellent11excellent
100010excellentexcellent21excellent
090012excellentexcellent21excellent
080012excellentexcellent21excellent
070016excellentexcellent31excellent
060025goodexcellent31excellent
050030goodexcellent41excellent
040031goodexcellent51excellent
030031goodexcellent61excellent
020034goodexcellent41excellent
010032goodexcellent51excellent
000038goodexcellent51excellent
230028goodexcellent51excellent
220027goodexcellent41excellent
210026goodexcellent31excellent