Check air pollution today, 1 Feb 2026: Bangkok’s PM2.5 levels are trending upward, exceeding standards in 58 areas. Most air quality levels are orange, indicating the start of health effects.
On 1 February 2026, the Bangkok Air Quality Information Center reported PM2.5 particulate matter levels in Bangkok at 07:00, averaging 44.8 micrograms per cubic meter (µg/m³), exceeding the standard limit of 37.5 µg/m³.
Top 12 highest PM2.5 pollution areas in Bangkok:
1. Chatuchak District: 54.1 µg/m³.
2. Lat Krabang District: 53.4 µg/m³.
3. Bang Kho Laem District: 53.1 µg/m³.
4. Khlong Sam Wa District: 53.0 µg/m³.
5. Bang Rak District: 52.9 µg/m³.
6. Lak Si District: 52.3 µg/m³.
7. Thawi Watthana District: 50.7 µg/m³.
8. Nong Chok District: 50.3 µg/m³.
9. Phra Nakhon District: 50.2 µg/m³.
10. Sai Mai District: 50.1 µg/m³.
11. Min Buri District: 49.4 µg/m³.
12. Pathum Wan District: 49.0 µg/m³.
Northern Bangkok
Eastern Bangkok
Central Bangkok
Southern Bangkok
Northern Thonburi
Southern Thonburi
Particulate matter shows a rising trend.
Overall: Air quality at the level starting to affect health.
Health Recommendations Orange-level air quality: Beginning to affect health.
General public: Use protective equipment such as PM2.5 masks whenever going outside. Limit time spent doing strenuous outdoor activities or exercise. Watch for symptoms like coughing, difficulty breathing, or eye irritation.
At-risk groups: Use protective equipment such as PM2.5 masks whenever going outside. Avoid strenuous outdoor activities or exercise. Follow medical advice and seek medical attention immediately if symptoms occur.
Meanwhile,Bangkok Environment Officereported PM2.5 levels trending upward, exceeding standards in 59 areas. At 07:00, PM2.5 measurements ranged from 32.5 to 54.2 µg/m³, showing a decrease compared to the same time yesterday. The pollution level is orange, indicating beginning health effects (standard limit is 37.5 µg/m³), observed in 58 areas as follows:
1. Chatuchak District, in front of Kasetsart University: 54.2 µg/m³.
2. Bang Kho Laem District, at the Four-way intersection police booth on Thanon Tok Road: 53.9 µg/m³.
3. Lat Krabang District, in front of Nakharin Hospital: 53.4 µg/m³.
4. Bang Rak District, beside the police booth in front of Bang Rak Lovely Plaza: 52.9 µg/m³.
5. Lak Si District, inside Lak Si District Office: 52.7 µg/m³.
6. Khlong Sam Wa District, inside Khlong Sam Wa District Office: 52.7 µg/m³.
7. Nong Chok District, in front of Nong Chok District Office: 50.4 µg/m³.
8. Thawi Watthana District, entrance to Sanam Luang 2: 50.3 µg/m³.
9. Phra Nakhon District, inside Phra Nakhon District Office: 50.0 µg/m³.
10. Sai Mai District, bus stop in front of Sai Mai District Office: 49.9 µg/m³.
11. Pathum Wan District, in front of Samyan Mitrtown Mall: 49.4 µg/m³.
12. Min Buri District, Chalerm Phrakiat R9 Park opposite Min Buri District Office: 49.4 µg/m³.
13. Bueng Kum District, inside Bueng Kum District Office: 49.1 µg/m³.
14. Samphanthawong District, in front of the corner of Chalerm Phrakiat gate (Odean Circle): 48.9 µg/m³.
15. Bang Phlat District, inside Bang Phlat District Office: 48.5 µg/m³.
16. Prawet District, in front of Seacon Square Department Store: 48.5 µg/m³.
17. Seri Thai Park, Bueng Kum District: 48.4 µg/m³.
18. Don Mueang District, beside Don Mueang District Office: 47.5 µg/m³.
19. Bang Sue District, inside Bang Sue District Office: 46.9 µg/m³.
20. Taling Chan District, at Phutthamonthon Sai 1 Road intersecting Borommaratchachonnani Road: 46.9 µg/m³.
21. Bang Na District, in front of Big C Bang Na: 46.8 µg/m³.
22. Wang Thonglang District, in front of Bangchak gas station, Soi Ladprao 95: 46.6 µg/m³.
23. Ladprao District, inside Ladprao District Office: 45.9 µg/m³.
24. Khlong Toei District, inside Khlong Toei District Office: 45.6 µg/m³.
25. Bang Khen District, inside Bang Khen District Office: 45.5 µg/m³.
26. Nong Khaem District, three-way junction near police booth on Majaroen Road, Phetkasem 81: 45.5 µg/m³.
27. Khan Na Yao District, at the entrance where Suan Siam Road meets Ram Inthra Road: 45.1 µg/m³.
28. Phasi Charoen District, in front of Siam University (around Phetkasem 36 Alley), university entrance: 44.8 µg/m³.
29. Saphan Sung District, inside Saphan Sung District Office: 44.7 µg/m³.
30. Bang Khun Thian District, inside Bang Khun Thian District Office: 44.5 µg/m³.
31. Ratchathewi District, inside Ratchathewi District Office: 44.2 µg/m³.
32. Rommaninat Park, Thung Si Kan, Don Mueang District: 44.1 µg/m³.
33. Bangkok Noi District, in front of Bangkok Noi Railway Police Station: 43.7 µg/m³.
34. Queen Sirikit 60th Birthday Park, Lat Krabang District: 43.4 µg/m³.
35. Thonburi District, at the bus stop near Mahaichai Intersection: 43.3 µg/m³.
36. Sathorn District, intersection in front of Sathorn District Office, Soi Saint Louis Road: 42.6 µg/m³.
37. Rat Burana District, inside Rat Burana District Office: 42.5 µg/m³. 38. Phra Khanong District, inside Phra Khanong District Office: 42.4 µg/m³.
39. Phaya Thai District, in front of army flats near Vichaiyut Hospital, opposite Ministry of Finance: 41.7 µg/m³.
40. Chalerm Phrakiat 80th Birthday Park, Bangkok Noi District: 41.2 µg/m³.
41. Ram Inthra Sports Park, Bang Khen District: 41.2 µg/m³.
42. Chalerm Phrakiat 6-cycle Birthday Public Park, Bang Kho Laem District: 41.1 µg/m³.
43. Pom Prap Sattru Phai District, in front of the National Economic and Social Development Council office: 41.0 µg/m³.
44. Yannawa District, near Krungsri Bank headquarters: 40.8 µg/m³.
45. Nong Chok Park, Nong Chok District: 40.7 µg/m³.
46. Suan Luang District, in front of Suan Luang District Office: 40.4 µg/m³.
47. Bang Kapi District, beside police booth opposite Bang Kapi District Office: 39.7 µg/m³.
48. Chom Thong District, inside Chom Thong District Office: 39.6 µg/m³.
49. Bang Bon District, near Suksawadee Market: 39.2 µg/m³.
50. Thawi Watthana Park, Thawi Watthana District: 39.2 µg/m³.
51. Queen Sirikit Park, Chatuchak District: 39.0 µg/m³.
52. Dusit District, at the park opposite Dusit District Office: 38.9 µg/m³.
53. Khlong San District, in front of the library under Somdet Phra Chao Taksin Bridge: 38.5 µg/m³.
54. Wachirabenjathat Park, Chatuchak District: 38.4 µg/m³.
55. Benjasiri Park, Khlong Toei District: 38.0 µg/m³.
56. Huai Khwang District, inside Huai Khwang District Office (beside nursery), Pracha Uthit Road: 37.7 µg/m³.
57. Bangkok Yai District, at Tha Phra Intersection, Wat Tha Phra Subdistrict: 37.6 µg/m³.
58. Chatuchak Park, Chatuchak District: 37.6 µg/m³.
Information courtesy of the Bangkok Air Quality Information Center Facebook page.