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
220018goodexcellent31excellent
210019goodexcellent21excellent
200015goodexcellent21excellent
190017goodexcellent31excellent
180015goodexcellent31excellent
170016goodexcellent41excellent
160019goodexcellent41excellent
150018goodexcellent41excellent
140017goodexcellent41excellent
130015goodexcellent31excellent
120014goodexcellent21excellent
11004excellentexcellent11excellent
10004excellentexcellent11excellent
09008excellentexcellent11excellent
08004excellentexcellent11excellent
07004excellentexcellent11excellent
060010excellentexcellent21excellent
05008excellentexcellent11excellent
04005excellentexcellent11excellent
03006excellentexcellent11excellent
02004excellentexcellent11excellent
01005excellentexcellent11excellent
00004excellentexcellent11excellent
23006excellentexcellent11excellent