Thailand: Air quality and weather – Monday to Friday – week 05-2025

Air quality and weather conditions in Thailand will vary over the coming week. Chiang Rai shows a clear improvement in air quality compared to last week, while Bangkok continues to struggle with deteriorating air quality. In Phuket, the air is stable, but rain and high humidity may affect outdoor activities.

Compared to this weekend's forecast, we see that the temperature is rising slightly in Chiang Rai and Bangkok, while Phuket continues to have high humidity and rain showers.

Chiang Rai: Improved air quality and rising temperatures

• Monday, January 27: AQI 73 – Moderate air quality, highest temperature 22°C, lowest 11°C.
• Tuesday, January 28: AQI 82 – Moderate air quality, highest temperature 25°C, lowest 11°C.
• Wednesday, January 29: AQI 91 – Moderate air quality, highest temperature 26°C, lowest 15°C.
• Thursday, January 30: AQI 86 – Moderate air quality, highest temperature 29°C, lowest 12°C.
• Friday, January 31: AQI 80 – Moderate air quality, highest temperature 30°C, lowest 13°C.

Change from the weekend: The temperature is rising steadily during the week. Air quality remains moderate but slightly improved compared to the weekend.

Bangkok: Unhealthy air towards the end of the week

• Monday, January 27: AQI 74 – Moderate air quality, highest temperature 30°C, lowest 20°C.
• Tuesday, January 28: AQI 83 – Moderate air quality, highest temperature 32°C, lowest 23°C.
• Wednesday, January 29: AQI 76 – Moderate air quality, highest temperature 31°C, lowest 23°C.
• Thursday, January 30: AQI 82 – Moderate air quality, highest temperature 32°C, lowest 24°C.
• Friday, January 31: AQI 94 – Unhealthy for sensitive groups, highest temperature 33°C, lowest 24°C.

Change from the weekend: Air quality will deteriorate significantly towards the end of the week. Temperatures will remain stable but rise slightly.

Phuket: Stable air quality and rainy weather

• Monday, January 27: AQI 63 – Moderate air quality, highest temperature 29°C, lowest 26°C.
• Tuesday, January 28: AQI 59 – Moderate air quality, highest temperature 30°C, lowest 26°C.
• Wednesday, January 29: AQI 58 – Moderate air quality, highest temperature 29°C, lowest 26°C.
• Thursday, January 30: AQI 61 – Moderate air quality, highest temperature 29°C, lowest 25°C.
• Friday, January 31: AQI 61 – Moderate air quality, highest temperature 28°C, lowest 25°C.

Change from the weekend: Air quality is stable. Temperatures remain high, and rain continues to characterize the week.

Summary and recommendations

• Chiang Rai: Air quality is moderate and showing signs of improvement. Residents can stay outdoors with some caution.
• Bangkok: Air pollution is increasing towards the end of the week. Sensitive groups are advised to minimize outdoor activities.
• Phuket: Air quality remains good, but high humidity and rain may limit outdoor activities.

Source: Air quality data is taken from IQ Air.

Stay informed and protect your health.

Text: The editorial staff

Image license: jplenio, Pixabay, original image