Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
170045lightly pollutedexcellent31excellent
160060lightly pollutedexcellent31excellent
150059lightly pollutedexcellent31excellent
140061moderately pollutedexcellent41excellent
130073moderately pollutedexcellent31excellent
120090heavily pollutedexcellent31excellent
1100101heavily pollutedexcellent41excellent
100035goodexcellent51excellent
090036goodexcellent51excellent
080033goodexcellent61excellent
070031goodexcellent61excellent
060031goodexcellent61excellent
050030goodexcellent51excellent
040029goodexcellent51excellent
030028goodexcellent51excellent
020029goodexcellent51excellent
010030goodexcellent51excellent
000030goodexcellent51excellent
230029goodexcellent51excellent
220030goodexcellent51excellent
210028goodexcellent41excellent
200026goodexcellent31excellent
190024goodexcellent31excellent
180028goodexcellent31excellent