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
230012excellentexcellent31excellent
220014goodexcellent31excellent
210014goodexcellent31excellent
200012excellentexcellent21excellent
190012excellentexcellent21excellent
18009excellentexcellent21excellent
17008excellentexcellent21excellent
16009excellentexcellent21excellent
15009excellentexcellent21excellent
140012excellentexcellent21excellent
130013goodexcellent21excellent
120010excellentexcellent21excellent
110017goodexcellent31excellent
100029goodexcellent51excellent
090025goodexcellent41excellent
080036goodexcellent61excellent
070047lightly pollutedexcellent81excellent
060034goodexcellent61excellent
050030goodexcellent51excellent
040026goodexcellent31excellent
030028goodexcellent31excellent
020029goodexcellent41excellent
010027goodexcellent41excellent
000026goodexcellent41excellent