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
080035goodexcellent61excellent
070035goodexcellent61excellent
060040lightly pollutedexcellent51excellent
050040lightly pollutedexcellent51excellent
040034goodexcellent41excellent
030035goodexcellent51excellent
020033goodexcellent51excellent
010031goodexcellent51excellent
000028goodexcellent41excellent
230019goodexcellent31excellent
220017goodexcellent31excellent
210018goodexcellent31excellent
200017goodexcellent31excellent
190015goodexcellent31excellent
180016goodexcellent31excellent
170017goodexcellent31excellent
160021goodexcellent41excellent
150027goodexcellent61excellent
140036goodexcellent71excellent
130035goodexcellent71excellent
120031goodexcellent61excellent
110035goodexcellent61excellent
100035goodexcellent71excellent
090038lightly pollutedexcellent61excellent