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
120014excellentexcellent21excellent
110017excellentexcellent31excellent
100027goodexcellent41excellent
090038goodexcellent71excellent
080054goodexcellent81excellent
070060goodexcellent81excellent
060047goodexcellent71excellent
050047goodexcellent61excellent
040049goodexcellent61excellent
030046goodexcellent61excellent
020049goodexcellent71excellent
010060goodexcellent81excellent
000061lightly pollutedexcellent71excellent
230051goodexcellent71excellent
220062lightly pollutedexcellent81excellent
210039goodexcellent61excellent
200013excellentexcellent11excellent
190012excellentexcellent11excellent
18008excellentexcellent11excellent
17006excellentexcellent11excellent
16006excellentexcellent11excellent
15007excellentexcellent11excellent
14006excellentexcellent11excellent
13008excellentexcellent21excellent