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
180022goodexcellent41excellent
170016goodexcellent31excellent
160018goodexcellent31excellent
150013goodexcellent31excellent
140015goodexcellent31excellent
130016goodexcellent31excellent
120021goodexcellent41excellent
110021goodexcellent41excellent
100021goodexcellent51excellent
090025goodexcellent51excellent
080020goodexcellent51excellent
070021goodexcellent41excellent
060023goodexcellent41excellent
050024goodexcellent41excellent
040026goodexcellent41excellent
030023goodexcellent31excellent
020019goodexcellent31excellent
010019goodexcellent21excellent
000017goodexcellent21excellent
230013goodexcellent11excellent
220013goodexcellent11excellent
21008excellentexcellent11excellent
20007excellentexcellent11excellent
19007excellentexcellent11excellent