Quality Index
Weather

Air Quality Index Is a report of air quality data
in a format that is easy to understand by the general public.
To publicize to the public about air pollution situations
In each area that is at what level Does it affect health?
Which the air quality index is a universal format
that is widely used in many countries such as
United States, Australia, Singapore, Malaysia and
Thailand etc.

Air quality index used in Thailand Calculated by comparing
the air quality standards in the general atmosphere
of 6 types of air pollutants, namely Ozone (O3) averaged 8 hours,
Nitrogen dioxide (NO2) an average of 1 hours average
Carbon monoxide (CO) 8 hours,
Sulfur dioxide (SO2) an average of 1 hour,
Dust size not exceeding 10 microns (PM10) average 24 hours,
Dust size not exceeding 2.5 microns (PM2.5) 24 hours average,
The previous calculated air quality index of any type
of air pollutant has the highest value.
Will be used as the air quality index of that day

Thailand's air quality index is divided into 5 levels.
is from 0 to 201 or more, each level uses color as
the symbol for the level of health impact.
hygiene (Table 1) by Air Quality Index 100
will have the same value as the air quality standards.
in general, if the air quality index is higher than 100,
shows that the concentration of air pollution is worth more than
standard and air quality on the day That will start in effect.
affecting people's health

Air quality index
criteria for Thailand

Very good quality
AQI 0-25
Very good air quality Suitable for outdoor activities and tourism
Good quality
AQI 26-50
Good air quality Can do outdoor activities and travel as usual
Medium
AQI 51-100
General people : can do outdoor activities as usual
People who need special health care : If there are basic symptoms such as coughing,difficulty breathing,eye irritation,should reduce the duration of outdoor activities.
Began to affect health
AQI 101-200
General people : should monitor health If there are basic symptoms such as coughing, difficulty breathing, eye irritation, should reduce the duration of outdoor activities. Or use self-protection equipment if necessary.
People who need special health care : should reduce the duration of outdoor activities Or use self-protection equipment if necessary If there are health symptoms such as coughing, dyspnea, eye inflammation, chest tightness, headache, irregular heart beat, nausea, fatigue, consult a doctor.
Affecting health
AQI AQI > 201
Everyone should avoid all kinds of outdoor activities. Avoid areas with high air pollution Or use self-protection equipment if necessary If there is a health condition, consult a doctor.

District

Station location

Latest data

PM10 (µg/m3)
(24 ชม.)

PM2.5 (µg/m3)
(24 ชม.)

AQI
compare

The standard

Dindaung districtAlong Vibhavadi Rangsit Road19-05-2025 18:005314.128Good quality
Dindaung district (PCD Station)National Housing Huaykwang Din Daeng, Khet Din Daeng, Bangkok02-05-2025 12:00-25.552Medium
Dindaung district (PCD Station)National Housing Authority Dindaeng Din Daeng Rd. Khet Din Daeng, Bangkok19-05-2025 18:005021.742Good quality
Prakanong districtWithin Prakanong District Office19-05-2025 18:00-16.429Good quality
ฑatburana districtWithin Ratburana District Office19-05-2025 18:00-25.854Medium
Rachathewi districtWithin Ratchathewi District Office19-05-2025 18:00-21.943Good quality
Dusit districtThe garden area opposite the Dusit District Office19-05-2025 18:00-21.842Good quality
Pom Prap Sattru Phai DistrictIn front of the Office of the National Economic and Social Development Board (Lan Luang intersection)19-05-2025 18:00-2038Good quality
Samphanthawong DistrictAround the corner Chalermprakiat Arch (Odean Circle)19-05-2025 18:00-14.515Very good quality
Phaya Thai DistrictFront of the Army Flats near Vichaiyut Hospital Opposite the Ministry of Finance19-05-2025 18:00-21.341Good quality
Phaya Thai District (PCD Station)The Government Public Relations Department Phaya Thai, Khet Phaya Thai, Bangkok19-05-2025 18:002714.314Very good quality
Wang Thonglang DistrictIn front of Bangchak gas station Soi Ladprao 9519-05-2025 18:00-30.472Medium
Wang Thonglang District (PCD Station)Bodindecha Sing Singhaseni School Pubpla, Khet Wang Thonglang, Bangkok19-05-2025 18:00-17.532Good quality
Wang Thonglang District (PCD Station)Bodindecha Sing Singhaseni School Pubpla, Khet Wang Thonglang, Bangkok19-05-2025 18:00-21.341Good quality
Pathumwan DistrictIn front of Sam Yan Mitrtown mall19-05-2025 18:00-24.348Good quality
Pathumwan District (PCD Station)Chulalongkorn Hospital Rama IV Rd. Khet Pathum Wan, Bangkok19-05-2025 18:00-20.539Good quality
Bangsak DistinctBeside the police yard in front of Bang Rak Lovely Plaza19-05-2025 18:00-21.942Good quality
Sathon DistrictThe intersection in front of the Sathorn District Office, Soi St. Louis Road19-05-2025 18:00-27.460Medium
Bang Kho Laem DistrictPolice area, the road intersection23-10-2023 07:00-21.441Good quality
Yannawa DistrictNear Bank of Ayudhya, Head Office19-05-2025 18:00-15.326Good quality
Yannawa District (PCD Station)Nonsi Witthaya School Chong Nonsi, Khet Yannawa, Bangkok19-05-2025 18:00-17.532Good quality
Wattana DistrictOpposite the noble Reveal (beside MK gold restaurants)19-05-2025 18:00-1414Very good quality
Suan Luang DistrictIn front of Suan Luang District Office19-05-2025 18:00-2038Good quality
Bang Na DistrictIn front of the mall Big C Bangna Department Store19-05-2025 18:00-2345Good quality
Bang Na District (PCD Station)Thai Meteorological Department Bang Na, Khet Bang Na, Bangkok19-05-2025 18:00-n/an/an/a
Chatuchak DistrictIn front of Kasetsart University19-05-2025 19:00-22.344Good quality
Don Mueng DistrictBeside Don Mueang District Office19-05-2025 18:00-21.942Good quality
Sai Mai DistrictBus stop in front of Saimai District Office19-05-2025 18:00-n/an/an/a
Bangkapi DistrictBeside the police fort opposite the Bang Kapi District Office19-05-2025 18:00-15.226Good quality
Bangkapi District (PCD Station)National Housing Authority Klongchan Khlong Chan, Khet Bang Kapi, Bangkok01-05-2025 00:00-30.271Medium
Khan Na Yao DistrictAt the entrance to Suan Siam Road intersects with Ram Inthra Road.19-05-2025 18:00-15.327Good quality
Lat Krabang DistrictIn front of Lat Krabang Hospital beside the police fort19-05-2025 18:00-26.456Medium
Meenburi DistrictChalermprakiat Rama IX Park opposite the clock tower Opposite Min Buri District Office19-05-2025 18:00-21.441Good quality
Nong Chok DistrictIn front of Nong Chok District Office19-05-2025 18:00-26.155Medium
Prawet DistrictIn front of Seacon Square Department Store19-05-2025 18:00-21.842Good quality
Thon Buri DistrictAlong the bus stop in the area19-05-2025 18:00-22.243Good quality
Thon Buri District (PCD Station)Along the bus stop in the area19-05-2025 18:00n/a17.933Good quality
Thon Buri District (PCD Station)Thonburi Power Sub-Station Intarapitak Rd. Khet Thon Buri, Bangkok19-05-2025 18:00n/a20.739Good quality
Khlong San DistrictIn front of the library under the bridge of King Taksin Bridge19-05-2025 18:00-19.236Good quality
Bangkok Yai DistrictAt Tha Phra Intersection Wat Tha Phra Sub-district19-05-2025 18:00-23.145Good quality
Bangkok Noi DistrictIn front of Bangkok Noi Railway Police Station19-05-2025 18:00-21.441Good quality
Taling Chan DistrictPhutthamonthon Sai 1 Road, intersecting with Borommaratchachonnani Road19-05-2025 18:00-2038Good quality
Thawi Watthana DistrictEntrance to Sanam Luang 219-05-2025 18:00-20.339Good quality
Phasi Charoen DistrictIn front of Siam University (about Soi Phetkasem 36), the entrance to the university is about 10 meters.19-05-2025 18:00-17.231Good quality
Nong Khaem DistrictThree intersections, next to the police fort, Maarearoen Phetkasem Road 8119-05-2025 18:00-22.143Good quality
Bang Bon DistrictNear Bang Bon Market19-05-2025 18:00-21.542Good quality
Thung Khru DistrictIn front of King Mongkut s University of Technology Thonburi19-05-2025 18:00-17.231Good quality
Phra Nakhon DistrictWithin the Phra Nakhon District Office19-05-2025 18:00-23.647Good quality
Huai Khwang DistrictWithin the Huai Khwang District Office (Beside the nursery) Pracha Uthit Road19-05-2025 18:00-17.432Good quality
Khlong Toei DistrictWithin the Khlong Toei District Office19-05-2025 18:00-23.747Good quality
Bang Sue DistrictWithin Bang Sue District Office19-05-2025 18:00-2140Good quality
Ladphrao DistrictInside the Lat Phrao District Office19-05-2025 18:00-18.935Good quality
Laksi DistrictWithin the Laksi District Office19-05-2025 18:00-20.138Good quality
Bang Khen DistrictWithin Bang Khen District Office19-05-2025 18:00-19.537Good quality
Saphan Sung DistrictWithin the Saphan Sung district office19-05-2025 18:00-15.727Good quality
Buengkum DistrictWithin Bueng Kum District Office19-05-2025 18:00-1414Very good quality
Klong Samwa DistrictWithin the Khlong Sam Wa District Office19-05-2025 18:00-22.544Good quality
Chom Thong DistrictWithin Chomthong District Office19-05-2025 18:00-1628Good quality
Bang Phlat DistrictWithin Bang Phlat District Office19-05-2025 18:00-23.947Good quality
Bang Khae DistrictWithin Bang Khae District Office19-05-2025 18:00-16.128Good quality
Bang Khun Thian DistrictWithin Bang Khun Thian District Office19-05-2025 18:00-22.544Good quality
Bang Khun Thian District (PCD Station)Highway NO.3902 km.13 +600 Kanchanaphisek Rd, Bang Khun Thian, Bangkok19-05-2025 17:00-20.740Good quality
Pathumwan Districtlumpini park19-05-2025 17:00-13.714Very good quality
Chatuchak DistrictWacchirabenchatat Park19-05-2025 17:00-2140Good quality
Chatuchak DistrictChatuchak Park19-05-2025 18:00-17.532Good quality
Prawet DistrictSuan Luang Rama IX19-05-2025 18:00-12.112Very good quality
Lat Krabang District60th Anniversary of Queen Sirikit Park19-05-2025 18:00-1936Good quality
Khlong Toei DistrictBenchasiri Park19-05-2025 18:00-13.914Very good quality
Buengkum DistrictNawaminpilom Park19-05-2025 18:00-18.634Good quality
Thung Khru DistrictThonburirom Park19-05-2025 18:00-14.815Very good quality
Khlong Toei DistrictBenjakitti Park19-05-2025 18:00-15.126Good quality
Chatuchak DistrictQueen Sirikit Park19-05-2025 18:00-14.515Very good quality
Bangkok Noi District80th Anniversary Commemoration Park19-05-2025 18:00-20.138Good quality
Buengkum DistrictSiri Thai park19-05-2025 18:00-19.938Good quality
Bangkae DistrictBang Khae Phirom Park19-05-2025 18:00-16.128Good quality
Thawi Watthana DistrictThawee Wanarom Park19-05-2025 18:00-17.331Good quality
Lat Krabang DistrictPhra Nakhon Park19-05-2025 18:00-12.112Very good quality
Nong Chok DistrictNong Chok Park19-05-2025 18:00-15.928Good quality
Bang Khen DistrictRamintra Sports Park19-05-2025 18:00-18.334Good quality
Bang Kho Laem DistrictPublic Park to commemorate the sixth anniversary of His Majesty the King19-05-2025 18:00-16.429Good quality
Rachathewi districtSantiphap Park19-05-2025 18:00-14.615Very good quality
Bang Phlat DistrictRama VIII Park19-05-2025 18:00-19.637Good quality
Around the Bangkok Christian HospitalVehicle air quality monitoring registration number 7427 7116-05-2025 14:00-17.431Good quality
Opposite Soi Phahonyothin 7Vehicle air quality monitoring registration number 7428 7219-05-2025 18:00-n/an/an/a
Bangkok Art and Culture Center areaVehicle air quality monitoring registration number 7430 7319-05-2025 18:00-19.637Good quality
In the area of ​​Samsen Nai Post OfficeVehicle air quality monitoring registration number 7431 7417-05-2025 13:00-23.647Good quality
Pathumwan District19-05-2025 18:00-n/an/an/a
06-04-2025 01:00-15.527Good quality
19-05-2025 18:00-15.126Good quality
28-03-2023 06:00-20.840Good quality
Pathumwan District16-06-2023 08:00-8.79Very good quality
Explanation

PM10 Unit: micrograms per cubic meter (µg/m3)

PM2.5 Unit: micrograms per cubic meter (µg/m3)

- : No measuring equipment

n/a : No measurement data

The information shown is information that has passed the preliminary examination only
If there are questions and suggestions Please contact the Air Quality and Noise Management Division
Environment Bureau Bangkok
Copyright 2018 Bangkok Air Quality