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
080012excellentexcellent21excellent
070013excellentexcellent21excellent
060013excellentexcellent31excellent
050012excellentexcellent21excellent
040012excellentexcellent21excellent
030012excellentexcellent21excellent
020015excellentexcellent31excellent
010016excellentexcellent21excellent
000017excellentexcellent21excellent
230013excellentexcellent21excellent
22008excellentexcellent21excellent
21006excellentexcellent21excellent
20004excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17006excellentexcellent11excellent
16004excellentexcellent11excellent
150057goodexcellent11excellent
14008excellentexcellent11excellent
130074lightly pollutedexcellent11excellent
12006excellentexcellent11excellent
11004excellentexcellent11excellent
10004excellentexcellent11excellent
09006excellentexcellent11excellent