Health and air quality
What to do at each pollution level: advice for everyone and for vulnerable groups — children, pregnant and breastfeeding women, the elderly, people with chronic respiratory and cardiovascular diseases.
The advice is general and does not replace medical consultation.
Good
level 1 of 5Everyone can spend time and exercise outdoors. No restrictions.
Satisfactory
level 2 of 5No risk for most people. Unusually sensitive people may notice mild discomfort.
Fair
level 3 of 5Reduce prolonged, intense outdoor exertion. Vulnerable groups should take care.
Poor
level 4 of 5Limit time outdoors and keep windows closed. Vulnerable groups should stay indoors; seek medical advice if symptoms appear.
Very poor
level 5 of 5Avoid going outdoors, cancel physical activity and use air purifiers. Seek medical help if breathing becomes difficult.