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
230027goodexcellent41excellent
220023goodexcellent31excellent
210020goodexcellent21excellent
200016goodexcellent21excellent
190021goodexcellent21excellent
180021goodexcellent21excellent
170019goodexcellent21excellent
160019goodexcellent21excellent
150025goodexcellent21excellent
140027goodexcellent21excellent
130019goodexcellent21excellent
120025goodexcellent21excellent
110027goodexcellent31excellent
100026goodexcellent31excellent
090022goodexcellent31excellent
080018goodexcellent21excellent
070014goodexcellent21excellent
060013goodexcellent11excellent
050010excellentexcellent11excellent
04009excellentexcellent11excellent
03008excellentexcellent21excellent
020010excellentexcellent21excellent
010011excellentexcellent11excellent
000011excellentexcellent11excellent