Air quality in Thailand
Air quality index (AQI⁺) and PM2.5 air pollution in Thailand • 19:09, Oct 06
Thailand Pollution Control DepartmentAir and Noise Quality Management Division BangkokGWF Air Detective VolunteerHappy & Healthy Bike LanePanyarat High SchoolSISB SchoolGreenpeace ThailandCondo Ban Rim NumChulalongkorn University Demonstration Elementary SchoolShrewsbury International SchoolIntronics co.ltd.Ladawan Kaset-NawaminChulalongkorn University Demonstration SchoolSt. Andrews International School Sukhumvit 107VELODOMECM MediclinicLang Hong GoldsmithSupachot WangchindaThammasat UniversityYip In Tsoi GroupInternational Community SchoolDenla British School BangkokTara Pattana International SchoolAster International School BangkokTHroboticsBangkok Prep International SchoolEnvironmental Research & InnovationAiroTEC CMRUWattana Wittaya AcademyOutdoor School Bangkok (OSB)Sriwittayapaknam SchoolThanaLa Petite Ecole - International SchoolSCG HeadquartersTYK Glass BangyaiThe American School of Bangkok (ASB)STOCK EXCHANGE OF THAILANDAmnuay Silpa SchoolScience and Technology Service Center, Chiang Mai University (STSC-CMU)Piyavit KhemarangsanAnya ราชพฤกษ์-นครอินทร์Space EateryPAOPAO BananaNoblewana WatcharapholSukkai Sabaijai PharmacyKaoChaoPrueklada Rangsit (Niti)Baan Siriporn ResortPhol Dhanya PCLPerfect Place Rt. SaimaMccraksakJohanChai Charoen Supplies Company LimitedHans G.Nut NutthamonSIPATPHONGMawinSiam Hospital Supply Co., Ltd.Sukhumvit81Anuwat SirithanchartNid PraditAlbiThe Royal Bangkok Sports ClubNantawan - SrinakarinAirQ@cnxHyundai Chiang RaiN.Team Accounting Co.,Ltd.Setthasiri Changwattana Prachachuen2Screen168SC Asset Corporation PLC.Greets Control Co., Ltd.ZynthierKUNALAIChartered Square Building The Athenee Hotel, a Luxury Collection, BangkokNeurological Institute of ThailandDonmuang HotelKrisda Condotel Cliff & Parkvission parkPark SilomMitraparp Memorial Hospitalสนามชัย1Embassy of Belgium in BangkokKoh Chang Dental ClinicPattayaBob YouTube Beach CamGJNหมู่บ้านจัดสรรลดาวัลย์ รังสิตGood Time FoundationHotel MAYUVilla Maraya PhuketSarutpat SutthithamLake view parkODPC 1Bueng Phra Subdistrictหมอจิรรุจน์Chiang Mai MunicipalityUNICEF Laos AQM ProjectAmethyst Hotel PattayaSeoul Clinic ThailandMmRonCoffeeCommunityMajor Grand Hotelพีร์ ศรีเจริญอลงกรณ์ หรเวชกุลPipat Dental-Repair Handpieceคลินิกทันตกรรมดีดีเดนทัลเดย์(DD Dental Day Clinic) ทำฟัน จัดฟัน บ้านบึงThe Box HouseDC Dental Clinic ChanthaburiMiradent Dental ClinicBanTonTan Pyramid ResortKlongyai Center HotelChill Hotel Khaoyai - โรงแรม ชิลล์ เขาใหญ่Hakuna Matata Villas PhraeEnvy BKPthanaras bumChiang Mai villaThesaban Tambon Ngim Subdistrict MunicipalityNopnaphawan Yuangphaกัญญาภัทร คิดอ่านThaksin HospitalSetthasiri Chaiyaphruek-ChaengwattanaThe Turtle Hotel Bangsaenองค์การบริหารส่วนตำบลลำทับอบต.ปอน
3 stations sponsored Thailand Pollution Control DepartmentAir and Noise Quality Management Division BangkokGWF Air Detective VolunteerHappy & Healthy Bike LanePanyarat High SchoolSISB SchoolGreenpeace ThailandCondo Ban Rim NumChulalongkorn University Demonstration Elementary SchoolShrewsbury International SchoolIntronics co.ltd.Ladawan Kaset-NawaminChulalongkorn University Demonstration SchoolSt. Andrews International School Sukhumvit 107VELODOMECM MediclinicLang Hong GoldsmithSupachot WangchindaThammasat UniversityYip In Tsoi GroupInternational Community SchoolDenla British School BangkokTara Pattana International SchoolAster International School BangkokTHroboticsBangkok Prep International SchoolEnvironmental Research & InnovationAiroTEC CMRUWattana Wittaya AcademyOutdoor School Bangkok (OSB)Sriwittayapaknam SchoolThanaLa Petite Ecole - International SchoolSCG HeadquartersTYK Glass BangyaiThe American School of Bangkok (ASB)STOCK EXCHANGE OF THAILANDAmnuay Silpa SchoolScience and Technology Service Center, Chiang Mai University (STSC-CMU)Piyavit KhemarangsanAnya ราชพฤกษ์-นครอินทร์Space EateryPAOPAO BananaNoblewana WatcharapholSukkai Sabaijai PharmacyKaoChaoPrueklada Rangsit (Niti)Baan Siriporn ResortPhol Dhanya PCLPerfect Place Rt. SaimaMccraksakJohanChai Charoen Supplies Company LimitedHans G.Nut NutthamonSIPATPHONGMawinSiam Hospital Supply Co., Ltd.Sukhumvit81Anuwat SirithanchartNid PraditAlbiThe Royal Bangkok Sports ClubNantawan - SrinakarinAirQ@cnxHyundai Chiang RaiN.Team Accounting Co.,Ltd.Setthasiri Changwattana Prachachuen2Screen168SC Asset Corporation PLC.Greets Control Co., Ltd.ZynthierKUNALAIChartered Square Building The Athenee Hotel, a Luxury Collection, BangkokNeurological Institute of ThailandDonmuang HotelKrisda Condotel Cliff & Parkvission parkPark SilomMitraparp Memorial Hospitalสนามชัย1Embassy of Belgium in BangkokKoh Chang Dental ClinicPattayaBob YouTube Beach CamGJNหมู่บ้านจัดสรรลดาวัลย์ รังสิตGood Time FoundationHotel MAYUVilla Maraya PhuketSarutpat SutthithamLake view parkODPC 1Bueng Phra Subdistrictหมอจิรรุจน์Chiang Mai MunicipalityUNICEF Laos AQM ProjectAmethyst Hotel PattayaSeoul Clinic ThailandMmRonCoffeeCommunityMajor Grand Hotelพีร์ ศรีเจริญอลงกรณ์ หรเวชกุลPipat Dental-Repair Handpieceคลินิกทันตกรรมดีดีเดนทัลเดย์(DD Dental Day Clinic) ทำฟัน จัดฟัน บ้านบึงThe Box HouseDC Dental Clinic ChanthaburiMiradent Dental ClinicBanTonTan Pyramid ResortKlongyai Center HotelChill Hotel Khaoyai - โรงแรม ชิลล์ เขาใหญ่Hakuna Matata Villas PhraeEnvy BKPthanaras bumChiang Mai villaThesaban Tambon Ngim Subdistrict MunicipalityNopnaphawan Yuangphaกัญญาภัทร คิดอ่านThaksin HospitalSetthasiri Chaiyaphruek-ChaengwattanaThe Turtle Hotel Bangsaenองค์การบริหารส่วนตำบลลำทับอบต.ปอน
3 stations sponsored 
Live most polluted city ranking
Real-time Thailand most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Samut Sakhon | 78 | |
| 2 | Surat Thani | 77 | |
| 3 | Nakhon Pathom | 71 | |
| 4 | Ban Bueng | 70 | |
| 5 | Bang Bua Thong | 69 | |
| 6 | Rayong | 69 | |
| 7 | Saraburi | 66 | |
| 8 | Ayutthaya | 65 | |
| 9 | Khlong Luang | 64 | |
| 10 | Sattahip | 62 |
2025 Thailand most polluted city
| Om Noi, Samut Sakhon | 94 |
Live cleanest city ranking
Real-time Thailand cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Khlong Nueng | 13 | |
| 2 | Chaloem Phra Kiat | 14 | |
| 3 | Bang Kaeo | 22 | |
| 4 | Bueng Kham Phroi | 22 | |
| 5 | Ban Pho | 23 | |
| 6 | Mueang | 25 | |
| 7 | Suthep | 27 | |
| 8 | Mae On | 28 | |
| 9 | Phitsanulok | 28 | |
| 10 | Doi Saket | 33 |
2025 Thailand cleanest city
| Phra Sing, Chiang Mai | 42 |
2025 Thailand air quality
2025 country air quality average
How polluted is Thailand?
In 2025 in Thailand, the annual PM2.5 concentration was 3.6 times the WHO annual PM2.5 guideline.
2025 AQI⁺ country ranking
Which country had the worst air quality in 2025?
Worldwide PM2.5 ranking
2025 Thailand global rank in air pollution
48/143
Wildfires in Thailand
Real-time information
Active fires
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Learn more about global air quality
Which is the most polluted state in Thailand?
- Amnat Charoen
- Ang Thong
- Bangkok
- Buriram
- Chachoengsao
- Chai Nat
- Chaiyaphum
- Changwat Bueng Kan
- Changwat Ubon Ratchathani
- Chanthaburi
- Chiang Mai
- Chiang Rai
- Chon Buri
- Chumphon
- Kalasin
- Kamphaeng Phet
- Kanchanaburi
- Khon Kaen
- Krabi
- Lampang
- Lamphun
- Loei
- Lopburi
- Mae Hong Son
- Maha Sarakham
- Mukdahan
- Nakhon Nayok
- Nakhon Pathom
- Nakhon Phanom
- Nakhon Ratchasima
- Nakhon Sawan
- Nakhon Si Thammarat
- Nan
- Narathiwat
- Nong Bua Lamphu
- Nong Khai
- Nonthaburi
- Pathum Thani
- Pattani
- Phangnga
- Phatthalung
- Phayao
- Phetchabun
- Phetchaburi
- Phichit
- Phitsanulok
- Phra Nakhon Si Ayutthaya
- Phrae
- Phuket
- Prachin Buri
- Prachuap Khiri Khan
- Ranong
- Ratchaburi
- Rayong
- Roi Et
- Sa Kaeo
- Sakon Nakhon
- Samut Prakan
- Samut Sakhon
- Samut Songkhram
- Sara Buri
- Satun
- Sing Buri
- Sisaket
- Songkhla
- Sukhothai
- Suphan Buri
- Surat Thani
- Surin
- Tak
- Trang
- Trat
- Udon Thani
- Uthai Thani
- Uttaradit
- Yala
- Yasothon
