2025-04-06
Thailand enters week 15 with continued extreme heat in Chiang Rai, where temperatures reach 39°C, while air quality fluctuates between unhealthy and moderate. Bangkok will see rain every day but with milder air pollution compared to the previous week. Phuket will see cooler temperatures towards the end of the week and show a positive trend in air quality.
Chiang Rai: Heat persists, air quality slightly improved
| Date | Forecast |
|---|---|
| Monday, April 7 | AQI 105 – Unhealthy for sensitive groups, highest temperature 29°C, lowest 21°C. Rain. |
| Tuesday 8 April | AQI 111 – Unhealthy for sensitive groups, highest temperature 36°C, lowest 21°C. Cloudy. |
| Wednesday, April 9 | AQI 99 – Moderate air quality, high temperature 39°C, low 22°C. Cloudy. |
| Thursday, April 10 | AQI 90 – Moderate air quality, high temperature 30°C, low 24°C. Cloudy. |
| Friday, April 11 | AQI 84 – Moderate air quality, high temperature 25°C, low 21°C. Rain. |
Change from week 14: Air quality has improved slightly but temperatures remain extremely high midweek.
Bangkok: Rainy week with varied air quality
| Date | Forecast |
|---|---|
| Monday, April 7 | AQI 73 – Moderate air quality, high temperature 34°C, low 28°C. Rain. |
| Tuesday 8 April | AQI 88 – Moderate air quality, high temperature 33°C, low 28°C. Rain. |
| Wednesday, April 9 | AQI 82 – Moderate air quality, high temperature 34°C, low 28°C. Cloudy. |
| Thursday, April 10 | AQI 68 – Moderate air quality, high temperature 34°C, low 28°C. Cloudy. |
| Friday, April 11 | AQI 69 – Moderate air quality, high temperature 34°C, low 28°C. Rain. |
Change from week 14: Air quality is stable at a moderate level. Rain every day.
Phuket: Heavy rain but improved air quality
| Date | Forecast |
|---|---|
| Monday, April 7 | AQI 64 – Moderate air quality, high temperature 31°C, low 27°C. Cloudy. |
| Tuesday 8 April | AQI 63 – Moderate air quality, high temperature 30°C, low 27°C. Rain. |
| Wednesday, April 9 | AQI 61 – Moderate air quality, high temperature 29°C, low 27°C. Rain. |
| Thursday, April 10 | AQI 45 – Good air quality, highest temperature 28°C, lowest 26°C. Rain. |
| Friday, April 11 | AQI 25 – Very good air quality, highest temperature 28°C, lowest 27°C. Rain. |
Change from week 14: Significantly improved air quality during the week.
Summary and recommendations
Chiang Rai: Extreme heat midweek and varied air quality.
Bangkok: Rainy week with stable moderate air.
Phuket: Both rain and cooler air provide a clear improvement in air quality.
Follow our weekly weather forecasts to stay up to date on air quality and temperature changes in Thailand.
What does AQI mean?
The AQI (Air Quality Index) is an index that shows how healthy or unhealthy the air is. It is usually based on the levels of PM2.5 – small particles in the air that are smaller than 2,5 micrometers. The higher the value, the worse the air quality. Values above 100 affect sensitive groups, while levels above 150 can be harmful to everyone.
| AQI category | Health advice |
|---|---|
| 0-33 Very good | Enjoy outdoor activities |
| 34-66 Good | Enjoy outdoor activities |
| 67-99 Moderate | People who are unusually sensitive to air pollution should plan strenuous outdoor activities when the air quality is better. |
| 100-149 Poor | Sensitive groups: Reduce or reschedule strenuous outdoor activities |
| 150-200 Very poor | Sensitive groups: Avoid strenuous outdoor activities Everyone: Reduce or reschedule strenuous outdoor activities |
| 200+ Dangerous | Sensitive groups: Avoid all physical activity outdoors Everyone: Severely limit outdoor activities |
Source: Air quality data is taken from IQ Air.
Stay informed and protect your health.
Text: The editorial staff
Image license: Quang Praha, Pixabay, original image
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