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
230028goodexcellent41excellent
220030goodexcellent41excellent
210027goodexcellent31excellent
200025goodexcellent31excellent
190018goodexcellent21excellent
180014goodexcellent21excellent
170013goodexcellent21excellent
160014goodexcellent21excellent
150017goodexcellent21excellent
140014goodexcellent31excellent
130016goodexcellent31excellent
120017goodexcellent31excellent
110016goodexcellent31excellent
100025goodexcellent51excellent
090031goodexcellent51excellent
080037lightly pollutedexcellent71excellent
070034goodexcellent71excellent
060043lightly pollutedexcellent71excellent
050029goodexcellent61excellent
040027goodexcellent61excellent
030029goodexcellent61excellent
020028goodexcellent51excellent
010024goodexcellent51excellent
000021goodexcellent41excellent