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
110013goodexcellent31excellent
100016goodexcellent31excellent
090016goodexcellent31excellent
080024goodexcellent31excellent
070023goodexcellent31excellent
060025goodexcellent31excellent
050026goodexcellent31excellent
040024goodexcellent41excellent
030023goodexcellent41excellent
020027goodexcellent41excellent
010030goodexcellent51excellent
000031goodexcellent51excellent
230034goodexcellent51excellent
220036goodexcellent51excellent
210036goodexcellent41excellent
200028goodexcellent31excellent
190021goodexcellent31excellent
180014goodexcellent21excellent
170013goodexcellent21excellent
160012excellentexcellent11excellent
15006excellentexcellent11excellent
140013goodexcellent31excellent
130020goodexcellent41excellent
120024goodexcellent61excellent