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
000095lightly pollutedexcellent151excellent
230089lightly pollutedexcellent141excellent
220084lightly pollutedexcellent141excellent
210085lightly pollutedexcellent131excellent
200066lightly pollutedexcellent91excellent
190047goodexcellent81excellent
180040goodexcellent81excellent
170034goodexcellent41excellent
160029goodexcellent41excellent
150033goodexcellent51excellent
140031goodexcellent51excellent
130034goodexcellent71excellent
120040goodexcellent71excellent
110048goodexcellent81excellent
100051goodexcellent91excellent
090060goodexcellent101excellent
080084lightly pollutedexcellent141excellent
0700108moderately pollutedexcellent141excellent
0600104moderately pollutedexcellent141excellent
0500112moderately pollutedexcellent141excellent
0400103moderately pollutedexcellent111excellent
0300106moderately pollutedexcellent141excellent
0200126moderately pollutedexcellent131excellent
0100130moderately pollutedexcellent121excellent