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
090016goodexcellent21excellent
080015goodexcellent21excellent
070017goodexcellent31excellent
060019goodexcellent31excellent
050016goodexcellent31excellent
040022goodexcellent41excellent
030027goodexcellent41excellent
020023goodexcellent41excellent
010021goodexcellent41excellent
000023goodexcellent31excellent
230023goodexcellent41excellent
220027goodexcellent41excellent
210023goodexcellent41excellent
200020goodexcellent31excellent
190018goodexcellent31excellent
180013goodexcellent21excellent
170014goodexcellent21excellent
160015goodexcellent21excellent
15009excellentexcellent21excellent
14009excellentexcellent11excellent
13009excellentexcellent11excellent
120011excellentexcellent21excellent
110011excellentexcellent11excellent
100011excellentexcellent21excellent