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
15008excellentexcellent11excellent
14007excellentexcellent11excellent
13007excellentexcellent11excellent
12008excellentexcellent11excellent
11008excellentexcellent11excellent
10008excellentexcellent11excellent
09008excellentexcellent11excellent
080013goodexcellent11excellent
070016goodexcellent31excellent
060019goodexcellent31excellent
050016goodexcellent31excellent
040015goodexcellent31excellent
030016goodexcellent31excellent
020020goodexcellent31excellent
010019goodexcellent21excellent
000016goodexcellent21excellent
230016goodexcellent21excellent
220023goodexcellent21excellent
210025goodexcellent11excellent
200016goodexcellent11excellent
190012excellentexcellent11excellent
18008excellentexcellent11excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent