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
000018goodexcellent31excellent
230014goodexcellent31excellent
220026goodexcellent31excellent
210019goodexcellent31excellent
200014goodexcellent31excellent
190015goodexcellent31excellent
180015goodexcellent21excellent
17009excellentexcellent11excellent
16009excellentexcellent11excellent
15008excellentexcellent11excellent
14007excellentexcellent11excellent
13007excellentexcellent11excellent
12008excellentexcellent11excellent
11008excellentexcellent11excellent
10008excellentexcellent11excellent
09008excellentexcellent11excellent
080013goodexcellent11excellent
070016goodexcellent31excellent
060019goodexcellent31excellent
050016goodexcellent31excellent
040015goodexcellent31excellent
030016goodexcellent31excellent
020020goodexcellent31excellent
010019goodexcellent21excellent