How does the air quality in Chiang Mai change throughout the year?

Air quality in Chiang Mai can vary significantly, especially during the burning season from February to April, when agricultural burning occurs nearby.

• During this period, the air can become quite hazy and unhealthy, particularly in March.

• The best air quality is usually from November to January, making it a great time for outdoor activities.

Practical Chiang Mai planning note: For weather and air quality, check a current forecast and a live air-quality source shortly before the activity. Northern Thailand can experience strong seasonal variation, and conditions differ between the city, foothills and higher mountains.