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
030046lightly pollutedexcellent111excellent
020040lightly pollutedexcellent111excellent
010039lightly pollutedexcellent101excellent
000037lightly pollutedexcellent101excellent
230039lightly pollutedexcellent101excellent
220034goodexcellent81excellent
210038lightly pollutedexcellent71excellent
200032goodexcellent51excellent
190018goodexcellent41excellent
180012excellentexcellent31excellent
170010excellentexcellent31excellent
160012excellentexcellent31excellent
150014goodexcellent31excellent
140011excellentexcellent31excellent
130014goodexcellent31excellent
120013goodexcellent41excellent
110015goodexcellent41excellent
100020goodexcellent51excellent
090024goodexcellent61excellent
080028goodexcellent71excellent
070028goodexcellent61excellent
060026goodexcellent51excellent
050023goodexcellent51excellent
040024goodexcellent41excellent