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
040013goodexcellent31excellent
030016goodexcellent31excellent
020019goodexcellent41excellent
010016goodexcellent41excellent
000015goodexcellent41excellent
230017goodexcellent41excellent
220017goodexcellent41excellent
210021goodexcellent51excellent
200015goodexcellent51excellent
190012excellentexcellent51excellent
180016goodexcellent41excellent
170016goodexcellent41excellent
160017goodexcellent41excellent
150020goodexcellent41excellent
140019goodexcellent51excellent
130034goodexcellent51excellent
120023goodexcellent41excellent
110019goodexcellent41excellent
100017goodexcellent51excellent
090023goodexcellent51excellent
080016goodexcellent51excellent
070019goodexcellent61excellent
060027goodexcellent61excellent
050024goodexcellent61excellent