Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
080022goodexcellent31excellent
070020excellentexcellent31excellent
060017excellentexcellent21excellent
050012excellentexcellent21excellent
040010excellentexcellent21excellent
030011excellentexcellent21excellent
020013excellentexcellent21excellent
010010excellentexcellent11excellent
000010excellentexcellent11excellent
230013excellentexcellent21excellent
220014excellentexcellent21excellent
210016excellentexcellent11excellent
20009excellentexcellent11excellent
19007excellentexcellent11excellent
180012excellentexcellent11excellent
170011excellentexcellent21excellent
160016excellentexcellent11excellent
150013excellentexcellent11excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
120012excellentexcellent11excellent
110010excellentexcellent11excellent
100010excellentexcellent11excellent
090012excellentexcellent21excellent