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
030028goodexcellent51excellent
020029goodexcellent51excellent
010030goodexcellent51excellent
000030goodexcellent51excellent
230029goodexcellent51excellent
220030goodexcellent51excellent
210028goodexcellent41excellent
200026goodexcellent31excellent
190024goodexcellent31excellent
180028goodexcellent31excellent
170025goodexcellent31excellent
160028goodexcellent31excellent
150034goodexcellent31excellent
140064moderately pollutedexcellent21excellent
130060lightly pollutedexcellent21excellent
120056lightly pollutedexcellent31excellent
110032goodexcellent31excellent
100024goodexcellent41excellent
090024goodexcellent41excellent
080023goodexcellent41excellent
070023goodexcellent41excellent
060020goodexcellent41excellent
050021goodexcellent41excellent
040021goodexcellent31excellent