Acceptable for most, though unusually sensitive people may experience symptoms.
Updated 01:00 AM · European AQI 39
Fine particulate matter that penetrates deep into the lungs.
Coarse particulate matter from dust and pollen.
Carbon monoxide, mostly from vehicle exhaust.
Nitrogen dioxide, a traffic-related irritant.
Ground-level ozone formed in sunny, warm conditions.
Sulphur dioxide, mainly from industrial sources.
Safe for outdoor activities
Acceptable air quality for most people.
Sensitive groups should consider reducing prolonged outdoor exertion.
Safe for most activities; take breaks if exercising vigorously.
Mask optional during heavy exercise.