Air quality in Porto
45
Moderate
Air Quality Index
Sensitive groups may experience health effects. The general public is not likely to be affected.
▲
Pollutants
PM2.5
5.5 µg/m³
PM10
6.9 µg/m³
NO₂
0.4 µg/m³
O₃
107 µg/m³
SO₂
0.2 µg/m³
CO
140 µg/m³
Pollen
Alder
60
High
Birch
16
Medium
Grass
2
Low