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
040082lightly pollutedexcellent41excellent
030068lightly pollutedexcellent41excellent
020075lightly pollutedexcellent51excellent
010079lightly pollutedexcellent71excellent
000092lightly pollutedexcellent71excellent
230093lightly pollutedexcellent51excellent
220088lightly pollutedexcellent71excellent
2100180heavily pollutedexcellent131excellent
2000179heavily pollutedgood241excellent
1900148heavily pollutedgood211excellent
1800146heavily pollutedgood231excellent
1700203severely pollutedgood271excellent
1600172heavily pollutedgood241excellent
1500171heavily pollutedgood281excellent
1400148heavily pollutedgood241excellent
1300152heavily pollutedgood261excellent
1200163heavily pollutedgood271excellent
1100174heavily pollutedgood261excellent
1000181heavily pollutedgood231excellent
0900199heavily pollutedexcellent171excellent
0800193heavily pollutedexcellent161excellent
0700170heavily pollutedexcellent201excellent
0600133moderately pollutedexcellent191excellent
0500131moderately pollutedexcellent161excellent