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
040013excellentexcellent11excellent
030012excellentexcellent11excellent
020011excellentexcellent11excellent
01009excellentexcellent11excellent
00005excellentexcellent11excellent
230010excellentexcellent11excellent
22006excellentexcellent21excellent
210081lightly pollutedexcellent11excellent
20006excellentexcellent11excellent
19005excellentexcellent11excellent
18008excellentexcellent11excellent
170065lightly pollutedexcellent11excellent
160052goodexcellent11excellent
150095lightly pollutedexcellent11excellent
140069lightly pollutedexcellent11excellent
130015excellentexcellent11excellent
120098lightly pollutedexcellent11excellent
110045goodexcellent11excellent
100050goodexcellent11excellent
090091lightly pollutedexcellent11excellent
08009excellentexcellent11excellent
070023goodexcellent11excellent
06006excellentexcellent11excellent
05008excellentexcellent11excellent