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
020017goodexcellent71excellent
010023goodexcellent81excellent
000029goodexcellent81excellent
230032goodexcellent71excellent
220025goodexcellent71excellent
210029goodexcellent61excellent
200024goodexcellent61excellent
190028goodexcellent71excellent
180034goodexcellent71excellent
170034goodexcellent81excellent
160036goodexcellent91excellent
150028goodexcellent71excellent
140026goodexcellent61excellent
130024goodexcellent61excellent
120019goodexcellent51excellent
110015goodexcellent41excellent
100017goodexcellent41excellent
090014goodexcellent41excellent
080016goodexcellent31excellent
070014goodexcellent31excellent
060013goodexcellent31excellent
050013goodexcellent21excellent
040015goodexcellent31excellent
030015goodexcellent31excellent