Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
110014excellentexcellent11excellent
10009excellentexcellent21excellent
090036goodexcellent51excellent
080033goodexcellent41excellent
070032goodexcellent51excellent
060034goodexcellent51excellent
050025goodexcellent31excellent
040029goodexcellent51excellent
030043goodexcellent71excellent
020031goodexcellent51excellent
010020excellentexcellent41excellent
000021goodexcellent41excellent
230025goodexcellent41excellent
220025goodexcellent41excellent
210013excellentexcellent31excellent
200015excellentexcellent31excellent
190026goodexcellent21excellent
180017excellentexcellent31excellent
170098lightly pollutedexcellent61excellent
160061lightly pollutedexcellent91excellent
150062lightly pollutedexcellent81excellent
140072lightly pollutedexcellent71excellent
130057goodexcellent51excellent
120057goodexcellent41excellent