PM 2.5
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]
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230047lightly pollutedexcellent91excellent
220047lightly pollutedexcellent91excellent
210048lightly pollutedexcellent91excellent
200038lightly pollutedexcellent71excellent
190027goodexcellent51excellent
180017goodexcellent31excellent
170012excellentexcellent21excellent
160012excellentexcellent21excellent
150013goodexcellent21excellent
140011excellentexcellent21excellent
13009excellentexcellent21excellent
12009excellentexcellent11excellent
11008excellentexcellent21excellent
100015goodexcellent31excellent
090023goodexcellent51excellent
080029goodexcellent61excellent
070033goodexcellent51excellent
060027goodexcellent41excellent
050028goodexcellent41excellent
040025goodexcellent41excellent
030028goodexcellent41excellent
020030goodexcellent41excellent
010032goodexcellent41excellent
000026goodexcellent41excellent