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
130015goodexcellent41excellent
120018goodexcellent41excellent
110018goodexcellent41excellent
100020goodexcellent41excellent
090024goodexcellent41excellent
080026goodexcellent41excellent
070030goodexcellent51excellent
060033goodexcellent41excellent
050030goodexcellent31excellent
040028goodexcellent41excellent
030029goodexcellent41excellent
020028goodexcellent41excellent
010026goodexcellent41excellent
000026goodexcellent41excellent
230021goodexcellent41excellent
220015goodexcellent51excellent
210021goodexcellent51excellent
200027goodexcellent61excellent
190033goodexcellent61excellent
180023goodexcellent41excellent
170016goodexcellent41excellent
160017goodexcellent41excellent
150021goodexcellent41excellent
140022goodexcellent41excellent