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
040031goodexcellent41excellent
030032goodexcellent41excellent
020030goodexcellent41excellent
010027goodexcellent41excellent
000029goodexcellent31excellent
230028goodexcellent31excellent
220030goodexcellent31excellent
210023goodexcellent41excellent
200019excellentexcellent31excellent
190014excellentexcellent21excellent
180018excellentexcellent21excellent
170016excellentexcellent21excellent
160018excellentexcellent21excellent
150017excellentexcellent31excellent
140018excellentexcellent21excellent
130018excellentexcellent21excellent
120035goodexcellent51excellent
110042goodexcellent51excellent
100038goodexcellent31excellent
090048goodexcellent51excellent
080042goodexcellent41excellent
070033goodexcellent31excellent
060029goodexcellent31excellent
050033goodexcellent51excellent