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
18009excellentexcellent11excellent
170011excellentexcellent11excellent
160016excellentexcellent11excellent
150010excellentexcellent21excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
120010excellentexcellent11excellent
110012excellentexcellent21excellent
100016excellentexcellent31excellent
090027goodexcellent51excellent
080051goodexcellent91excellent
070079lightly pollutedexcellent111excellent
060084lightly pollutedexcellent121excellent
050096lightly pollutedexcellent91excellent
040092lightly pollutedexcellent71excellent
030080lightly pollutedexcellent111excellent
020081lightly pollutedexcellent131excellent
010088lightly pollutedexcellent131excellent
000086lightly pollutedexcellent131excellent
230081lightly pollutedexcellent121excellent
220070lightly pollutedexcellent111excellent
210062lightly pollutedexcellent81excellent
200055goodexcellent71excellent
190046goodexcellent61excellent