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
20005excellentexcellent11excellent
19005excellentexcellent11excellent
18005excellentexcellent11excellent
17006excellentexcellent11excellent
16005excellentexcellent11excellent
15004excellentexcellent11excellent
140011excellentexcellent11excellent
13004excellentexcellent11excellent
12003excellentexcellent11excellent
110015excellentexcellent11excellent
100015excellentexcellent11excellent
09009excellentexcellent11excellent
080010excellentexcellent21excellent
070019excellentexcellent31excellent
060014excellentexcellent21excellent
050012excellentexcellent11excellent
040012excellentexcellent21excellent
030018excellentexcellent21excellent
020020excellentexcellent21excellent
010019excellentexcellent31excellent
000020excellentexcellent31excellent
230022goodexcellent31excellent
220023goodexcellent31excellent
210013excellentexcellent11excellent