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
080013goodexcellent31excellent
070013goodexcellent31excellent
060022goodexcellent31excellent
050025goodexcellent41excellent
040024goodexcellent51excellent
030021goodexcellent41excellent
020025goodexcellent51excellent
010029goodexcellent51excellent
000029goodexcellent61excellent
230032goodexcellent51excellent
220026goodexcellent41excellent
210024goodexcellent41excellent
200027goodexcellent61excellent
190026goodexcellent41excellent
180016goodexcellent31excellent
170020goodexcellent41excellent
160017goodexcellent41excellent
150016goodexcellent31excellent
140016goodexcellent41excellent
130018goodexcellent41excellent
120020goodexcellent51excellent
110017goodexcellent41excellent
100023goodexcellent61excellent
090053lightly pollutedgood141excellent