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
230036goodexcellent31excellent
220031goodexcellent31excellent
210026goodexcellent31excellent
200023goodexcellent21excellent
190024goodexcellent21excellent
180015excellentexcellent21excellent
170016excellentexcellent21excellent
160011excellentexcellent11excellent
150015excellentexcellent21excellent
140015excellentexcellent21excellent
130014excellentexcellent21excellent
120021goodexcellent31excellent
110019excellentexcellent31excellent
100025goodexcellent31excellent
090031goodexcellent31excellent
080028goodexcellent21excellent
070020excellentexcellent21excellent
060020excellentexcellent21excellent
050016excellentexcellent11excellent
040020excellentexcellent21excellent
030042goodexcellent51excellent
020046goodexcellent61excellent
010052goodexcellent51excellent
000032goodexcellent31excellent