PM 2.5
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]
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
23007excellentexcellent11excellent
22007excellentexcellent11excellent
21007excellentexcellent11excellent
20006excellentexcellent11excellent
19007excellentexcellent11excellent
18008excellentexcellent11excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent
15008excellentexcellent11excellent
14007excellentexcellent11excellent
130010excellentgood161excellent
120015goodexcellent31excellent
110024goodexcellent41excellent
100019goodexcellent31excellent
090035goodexcellent31excellent
080017goodexcellent21excellent
070028goodexcellent21excellent
060020goodexcellent21excellent
050018goodexcellent31excellent
040020goodexcellent21excellent
030018goodexcellent21excellent
020015goodexcellent21excellent
010012excellentexcellent21excellent
000013goodexcellent21excellent