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
07002excellentexcellent11excellent
06001excellentexcellent11excellent
05007excellentexcellent11excellent
040017excellentexcellent11excellent
030016excellentexcellent11excellent
020036goodexcellent41excellent
010050goodexcellent51excellent
000039goodexcellent41excellent
230032goodexcellent31excellent
220028goodexcellent31excellent
210021goodexcellent31excellent
200018excellentexcellent21excellent
190015excellentexcellent11excellent
180015excellentexcellent21excellent
170014excellentexcellent21excellent
160015excellentexcellent21excellent
150013excellentexcellent21excellent
140017excellentexcellent21excellent
130014excellentexcellent21excellent
120014excellentexcellent21excellent
110017excellentexcellent31excellent
100027goodexcellent41excellent
090038goodexcellent71excellent
080054goodexcellent81excellent