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
220035goodexcellent51excellent
210030goodexcellent41excellent
200024goodexcellent31excellent
190031goodexcellent41excellent
180024goodexcellent31excellent
170024goodexcellent41excellent
160027goodexcellent41excellent
150013excellentexcellent21excellent
140014excellentexcellent21excellent
130015excellentexcellent21excellent
120018excellentexcellent31excellent
110023goodexcellent31excellent
100023goodexcellent31excellent
090018excellentexcellent21excellent
080026goodexcellent31excellent
070027goodexcellent31excellent
060032goodexcellent31excellent
050026goodexcellent31excellent
040031goodexcellent41excellent
030030goodexcellent41excellent
020028goodexcellent41excellent
010040goodexcellent51excellent
000040goodexcellent51excellent
230032goodexcellent31excellent