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
110028goodexcellent31excellent
100026goodexcellent31excellent
090022goodexcellent31excellent
080018goodexcellent21excellent
070014goodexcellent21excellent
060013goodexcellent11excellent
050010excellentexcellent11excellent
04009excellentexcellent11excellent
03008excellentexcellent21excellent
020010excellentexcellent21excellent
010011excellentexcellent11excellent
000011excellentexcellent11excellent
230012excellentexcellent11excellent
220013goodexcellent21excellent
210016goodexcellent21excellent
200012excellentexcellent11excellent
190013goodexcellent11excellent
180022goodexcellent11excellent
170018goodexcellent11excellent
160023goodexcellent21excellent
150024goodexcellent21excellent
140023goodexcellent21excellent
130025goodexcellent21excellent
120025goodexcellent21excellent