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
020017excellentexcellent21excellent
010016excellentexcellent21excellent
000017excellentexcellent21excellent
230013excellentexcellent21excellent
22008excellentexcellent21excellent
21006excellentexcellent21excellent
20004excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17006excellentexcellent11excellent
16004excellentexcellent11excellent
150057goodexcellent11excellent
14008excellentexcellent11excellent
130074lightly pollutedexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10004excellentexcellent11excellent
09006excellentexcellent11excellent
080012excellentexcellent21excellent
07009excellentexcellent11excellent
06007excellentexcellent11excellent
05006excellentexcellent11excellent
04006excellentexcellent11excellent
03007excellentexcellent11excellent