2025-04-17
This weekend in Thailand, rain is expected across the country, especially in the south and Bangkok, while the heat will linger in Chiang Rai with 37°C on Sunday. Air quality remains generally within moderate levels, but without much improvement.
Chiang Rai: Warm and sunny with rising air pollution
| Friday, April 18 | AQI 65 – Moderate air quality, highest temperature 35°C, lowest 22°C. Sunny. |
| Saturday 19 April | AQI 66 – Moderate air quality, high temperature 35°C, low 21°C. Rain, 70%. |
| Sunday, April 20 | AQI 72 – Moderate air quality, highest temperature 37°C, lowest 23°C. Sunny. |
Sunday looks set to be the hottest day of the weekend in the north, despite the week starting with rain. Air quality will remain around the border between good and moderate throughout the weekend.
Bangkok: Rainy weekend and stable air quality
| Friday, April 18 | AQI 69 – Moderate air, highest temperature 35°C, lowest 27°C. Rain, 100%. |
| Saturday 19 April | AQI 69 – Moderate air, highest temperature 35°C, lowest 28°C. Rain, 100%. |
| Sunday, April 20 | AQI 68 – Moderate air, highest temperature 33°C, lowest 28°C. Rain, 80%. |
Bangkok will have a warm but rainy weekend. Despite the humidity, air quality does not improve significantly and remains in the moderate range.
Phuket: Showers all weekend but the air is slightly better
| Friday, April 18 | AQI 62 – Moderate air quality, high temperature 30°C, low 27°C. Cloudy. |
| Saturday 19 April | AQI 60 – Moderate air quality, high temperature 29°C, low 27°C. Rain, 100%. |
| Sunday, April 20 | AQI 63 – Moderate air quality, high temperature 27°C, low 26°C. Rain, 100%. |
Phuket is the coolest of the three resorts. Despite the rain, the air quality remains moderate, but within safe levels for most people.
Summary and recommendations
Chiang Rai: Very hot – Sunday reaches 37°C. Avoid exertion in the middle of the day.
Bangkok: Rain and humid heat, but no immediate improvement in the air.
Phuket: Cooler weather, stable air – best option for sensitive groups.
What does AQI mean?
AQI (Air Quality Index) is an index of how healthy the air is. It is usually based on PM2.5 particles. High values mean poorer air quality. Values above 100 are unhealthy for sensitive groups, while values above 150 can be dangerous for everyone.
| 0–33 | very good | Enjoy outdoor activities |
| 34–66 | Bra | Enjoy outdoor activities |
| 67–99 | Moderate | Sensitive people should avoid exertion |
| 100–149 | Bad | Sensitive: avoid activity |
| 150–200 | Very bad | Everyone: avoid exertion |
| 200+ | Dangerous | Avoid all physical activity outdoors. |
Source: IQ Air
Stay informed and protect your health.
Text: The editorial staff
Image license: lehni, Pixabay, original image
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