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
210021goodexcellent51excellent
200022goodexcellent41excellent
190014goodexcellent21excellent
18007excellentexcellent11excellent
17006excellentexcellent11excellent
16007excellentexcellent11excellent
15006excellentexcellent11excellent
14007excellentexcellent11excellent
13008excellentexcellent11excellent
12006excellentexcellent11excellent
11009excellentexcellent21excellent
10009excellentexcellent21excellent
09008excellentexcellent21excellent
080012excellentexcellent31excellent
070013goodexcellent31excellent
060022goodexcellent31excellent
050025goodexcellent41excellent
040024goodexcellent51excellent
030021goodexcellent41excellent
020025goodexcellent51excellent
010029goodexcellent51excellent
000029goodexcellent61excellent
230032goodexcellent51excellent
220026goodexcellent41excellent