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
200010excellentexcellent11excellent
190011excellentexcellent11excellent
180013excellentexcellent11excellent
170010excellentexcellent11excellent
16007excellentexcellent11excellent
150012excellentexcellent11excellent
14007excellentexcellent11excellent
130016excellentgood361excellent
120022goodexcellent81excellent
110039goodexcellent51excellent
100033goodexcellent31excellent
090061lightly pollutedexcellent31excellent
080030goodexcellent21excellent
070043goodexcellent31excellent
060031goodexcellent21excellent
050030goodexcellent31excellent
040034goodexcellent31excellent
030029goodexcellent31excellent
020023goodexcellent31excellent
010019excellentexcellent21excellent
000021goodexcellent31excellent
230017excellentexcellent21excellent
220016excellentexcellent21excellent
210014excellentexcellent11excellent