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
1900200severely pollutedexcellent11excellent
1800200severely pollutedexcellent11excellent
1700200severely pollutedexcellent11excellent
1600200severely pollutedexcellent11excellent
1500200severely pollutedexcellent11excellent
1400101heavily pollutedexcellent11excellent
130035goodexcellent11excellent
120014goodexcellent11excellent
11008excellentexcellent31excellent
100054lightly pollutedexcellent31excellent
090055lightly pollutedexcellent21excellent
080010excellentexcellent11excellent
07006excellentexcellent11excellent
06006excellentexcellent11excellent
05005excellentexcellent11excellent
04006excellentexcellent11excellent
030053lightly pollutedexcellent11excellent
020046lightly pollutedexcellent11excellent
01006excellentexcellent11excellent
000057lightly pollutedexcellent11excellent
23005excellentexcellent11excellent
22006excellentexcellent11excellent
21005excellentexcellent11excellent
20007excellentexcellent11excellent