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
140021goodexcellent31excellent
130028goodexcellent51excellent
120031goodexcellent41excellent
110029goodexcellent41excellent
100047goodexcellent61excellent
090054goodexcellent81excellent
080066lightly pollutedexcellent91excellent
070061lightly pollutedexcellent101excellent
060085lightly pollutedexcellent111excellent
050052goodexcellent111excellent
040050goodexcellent91excellent
030054goodexcellent91excellent
020047goodexcellent71excellent
010047goodexcellent71excellent
000038goodexcellent61excellent
230048goodexcellent71excellent
220065lightly pollutedexcellent111excellent
210061lightly pollutedexcellent81excellent
200050goodexcellent71excellent
190041goodexcellent61excellent
180037goodexcellent61excellent
170036goodexcellent61excellent
160048goodexcellent81excellent
150051goodexcellent81excellent