Fine particles
20.4µg/m³CAMS model • Open-Meteo
ThailandAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
Thailand - average concentrations across available points: PM2.5: 20.4 µg/m³, PM10: 21.4 µg/m³, O₃: 57.1 µg/m³, NO₂: 21.3 µg/m³, SO₂: 10.9 µg/m³, CO: 1,121.9 µg/m³. Date range: October 23, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Hat Yai (8.6 µg/m³). Highest PM2.5: Nakhon Pathom (63.1 µg/m³). This comparison covers 19 cities on October 23, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
1 weather warning in effect for Thailand
All cities · Thailand
19 citiesThailand↗
Bangkok
PM2.534.7
PM1035.9
µg/m³
PM2.5 · ModerateNO₂ 47.7O₃ 64
October 23, 202608:00
Thailand↗
Samut Prakan Province
PM2.534.7
PM1035.9
µg/m³
PM2.5 · ModerateNO₂ 47.7O₃ 64
October 23, 202608:00
Thailand↗
Udon Thani
PM2.511.5
PM1013
µg/m³
PM2.5 · FairNO₂ 15O₃ 54
October 23, 202608:00
Thailand↗
Chonburi
PM2.514.1
PM1015
µg/m³
PM2.5 · FairNO₂ 21.3O₃ 70
October 23, 202608:00
Thailand↗
Nakhon Ratchasima
PM2.512
PM1012.5
µg/m³
PM2.5 · FairNO₂ 7.7O₃ 41
October 23, 202608:00
Thailand↗
Chiang Mai
PM2.521.5
PM1021.7
µg/m³
PM2.5 · ModerateNO₂ 23.6O₃ 53
October 23, 202608:00
Thailand↗
Hat Yai
PM2.58.6
PM109.9
µg/m³
PM2.5 · FairNO₂ 4.3O₃ 63
October 23, 202608:00
Thailand↗
Pak Kret
PM2.548.2
PM1049.5
µg/m³
PM2.5 · ModerateNO₂ 52O₃ 59
October 23, 202608:00
Thailand↗
Si Racha
PM2.514.1
PM1015
µg/m³
PM2.5 · FairNO₂ 21.3O₃ 70
October 23, 202608:00
Thailand↗
Lampang
PM2.516.5
PM1016.7
µg/m³
PM2.5 · ModerateNO₂ 13.1O₃ 70
October 23, 202608:00
Thailand↗
Khon Kaen
PM2.513.2
PM1015
µg/m³
PM2.5 · FairNO₂ 17.2O₃ 55
October 23, 202608:00
Thailand↗
Surat Thani
PM2.511.2
PM1012.8
µg/m³
PM2.5 · FairNO₂ 9.4O₃ 43
October 23, 202608:00
Thailand↗
Rangsit
PM2.518
PM1019.1
µg/m³
PM2.5 · ModerateNO₂ 16.9O₃ 53
October 23, 202608:00
Thailand↗
Ubon Ratchathani
PM2.513.6
PM1014
µg/m³
PM2.5 · FairNO₂ 12.8O₃ 49
October 23, 202608:00
Thailand↗
Nakhon Si Thammarat
PM2.511
PM1012.7
µg/m³
PM2.5 · FairNO₂ 4.7O₃ 43
October 23, 202608:00
Thailand↗
Khlong Luang District
PM2.518
PM1019.1
µg/m³
PM2.5 · ModerateNO₂ 16.9O₃ 53
October 23, 202608:00
Thailand↗
Nakhon Pathom
PM2.563.1
PM1063.6
µg/m³
PM2.5 · PoorNO₂ 43.2O₃ 70
October 23, 202608:00
Thailand↗
Rayong
PM2.511.7
PM1012
µg/m³
PM2.5 · FairNO₂ 14.6O₃ 56
October 23, 202608:00
Thailand↗
Phitsanulok
PM2.512.5
PM1012.7
µg/m³
PM2.5 · FairNO₂ 15.2O₃ 54
October 23, 202608:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Thailand
Particulate matter
21.4µg/m³Ozone
57.1µg/m³Nitrogen dioxide
21.3µg/m³Sulphur dioxide
10.9µg/m³Carbon monoxide
1,121.9µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · Thailand
Thailand - air pollution over recent days (2026-08-31 - 2026-10-22)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 6.7 2026-09-07Highest 22.16 2026-10-222026-08-31 - 2026-10-22
PM10Lowest 7.41 2026-09-07Highest 23.02 2026-10-222026-08-31 - 2026-10-22
O₃Lowest 42.34 2026-08-31Highest 92.58 2026-10-172026-08-31 - 2026-10-22
NO₂Lowest 9.21 2026-09-06Highest 20.75 2026-10-222026-08-31 - 2026-10-22
SO₂Lowest 4.25 2026-09-06Highest 10.56 2026-10-222026-08-31 - 2026-10-22
COLowest 302.54 2026-09-06Highest 923.48 2026-10-222026-08-31 - 2026-10-22
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-22 | 2026-10-21 | 2026-10-20 | 2026-10-19 | 2026-10-18 | 2026-10-17 | 2026-10-16 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 22.16 | 13.68 | 12.53 | 11.65 | 13.44 | 18.53 | 14.96 | 6.7 | 8.16 | 11.53 | 11.93 | 10.51 | 11.34 | 9.6 | 8.13 |
| PM10 | 23.02 | 14.43 | 13.26 | 12.26 | 14.15 | 19.5 | 15.8 | 7.41 | 9.53 | 14.87 | 15.23 | 13.91 | 14.42 | 12.5 | 10.1 |
| O₃ | 83.55 | 76.39 | 71 | 71.43 | 76.76 | 92.58 | 84.16 | 47.43 | 53.17 | 50.89 | 47.41 | 50.15 | 46.85 | 45.4 | 42.34 |
| NO₂ | 20.75 | 18.58 | 17.1 | 13.35 | 13.7 | 18.88 | 18.95 | 10.17 | 9.21 | 12.61 | 14.54 | 13 | 13.44 | 12.56 | 12.19 |
| SO₂ | 10.56 | 8.83 | 8.15 | 6.68 | 6.69 | 8.72 | 9.39 | 4.73 | 4.25 | 5.21 | 6.06 | 5.48 | 5.56 | 5.38 | 5 |
| CO | 923.48 | 799.8 | 641.64 | 575.85 | 548.75 | 681.36 | 668.37 | 372.8 | 302.54 | 401.95 | 397.19 | 380.24 | 440.19 | 372.96 | 418.18 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Thailand
Thailand - air pollution history (2015-06 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM10Lowest 21.9 2017-08Highest 74 2020-022015-06 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-12 | 2015-11 | 2015-10 | 2015-09 | 2015-08 | 2015-07 | 2015-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 32.8 | 42.3 | 47.8 | 74 | 65.8 | 60.1 | 47.3 | 33.9 | 28.1 | 24.3 | 27.7 | 26.2 | 35.9 | 40.4 | 51.5 | 47.7 | 62.7 | 44.4 | 38.8 | 30.3 | 24.5 | 27.3 | 26.7 | 27.4 | 28.2 | 40.5 | 48.8 | 63.3 | 42 | 44.9 | 35.4 | 27.3 | 23.5 | 21.9 | 22.3 | 24.3 | 31 | 35.6 | 49.4 | 62.2 | 42.6 | 49 | 37.1 | 27.1 | 25 | 26.2 | 24.2 | 24.6 | 33.4 | 49.3 | 65.2 | 61.9 | 42.7 | 46.9 | 34.3 | 43.4 | — | — | — | 42 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Environment and quality of life ratings · Thailand
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Thailand | laoPDR | Cambodia | Vietnam | Myanmar | Malaysia |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 42% | 37% | 36% | 42% | 33% | 54% |
| Pleasure of spending time in the city | 37% | 38% | 32% | 30% | 24% | 48% |
| Air Pollution | 71% | 72% | 68% | 78% | 83% | 53% |
| Garbage Disposal | 41% | 20% | 25% | 24% | 12% | 47% |
| Availability and quality of drinking water | 49% | 51% | 48% | 43% | 34% | 56% |
| Cleanliness and tidiness | 38% | 32% | 25% | 29% | 18% | 47% |
| Noise and Light pollution | 57% | 55% | 59% | 65% | 52% | 49% |
| Water Pollution | 69% | 73% | 73% | 73% | 74% | 62% |
WEATHER & SURROUNDINGS
Thailand · weather forecast
Daily maximum and minimum temperatures. Forecast point: 15.87, 100.9925.
Scroll the forecast to see the following days.
Thailand · October 20, 2026: minimum temperature 26.7°C, maximum 34.2°C. Wind: 7.7 km/h. Humidity: 70%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-20 | 31.3 | 26.7 | 34.2 | 27.3 | 0.5 | 2.1 | 70 | 58 |
| 2026-10-21 | 31.2 | 26.3 | 33.6 | 27.5 | 0.9 | 2.3 | 73 | 1 |
| 2026-10-22 | 30.5 | 25.8 | 33.3 | 27 | 1.4 | 2.2 | 72 | 6 |
| 2026-10-23 | 32.8 | 24.9 | 33.6 | 27.1 | 0.3 | 2.4 | 65 | 7 |
| 2026-10-24 | 30.9 | 23.3 | 31.8 | 25.8 | 1.3 | 2.2 | 66 | 100 |
| 2026-10-25 | 32 | 23.3 | 32 | 25.6 | 5.4 | 1.5 | 63 | 38 |
| 2026-10-26 | 28.5 | 24.2 | 31.5 | 24.6 | 5.9 | 2.3 | 78 | 100 |
| 2026-10-27 | 28.2 | 22.6 | 30.1 | 24.2 | 9.9 | 6.7 | 74 | 11 |
| 2026-10-28 | 27.8 | 22.4 | 29.8 | 23.8 | 2.6 | 5.7 | 69 | 17 |
| 2026-10-29 | 27.6 | 22 | 30.3 | 24.2 | 1.6 | 2.3 | 73 | 79 |
| 2026-10-30 | 27.9 | 23.2 | 30.4 | 24.9 | 5.4 | 2.2 | 76 | 97 |
| 2026-10-31 | 26.6 | 23.5 | 29.6 | 24.7 | 4.7 | 1.9 | 82 | 97 |
| 2026-11-01 | 27.3 | 22.9 | 29.8 | 25 | 7.3 | 1.8 | 81 | 71 |
| 2026-11-02 | 28.4 | 23.4 | 31.2 | 24.9 | 2.8 | 2.4 | 75 | 83 |
| 2026-11-03 | 28.4 | 23.3 | 29.8 | 23.6 | 4.7 | 6.8 | 74 | 88 |
| 2026-11-04 | 26.8 | 22.1 | 29.3 | 23.5 | 1.4 | 4.1 | 72 | 13 |
| 2026-11-05 | 27.2 | 21.8 | 30.2 | 23.3 | 2.7 | 4.2 | 75 | 41 |
| 2026-11-06 | 27.2 | 22.1 | 29.9 | 24.1 | 4.1 | 3.3 | 77 | 66 |
UV index by day · Thailand
Data for a country reference point. Local conditions may differ.
SPF 30-50, hat and sunglasses are a must. Better to stay in the shade 11:00-15:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Thailand · October 22, 2026: UV index: 7.6 .
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 | 2026-10-26 | 2026-10-27 | 2026-10-28 | 2026-10-29 | 2026-10-30 | 2026-10-31 | 2026-11-01 | 2026-11-02 | 2026-11-03 | 2026-11-04 | 2026-11-05 | 2026-11-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 7.6 | 7.7 | 7.6 | 7.6 | 6.6 | 7.5 | 7.4 | 7.3 | 7.2 | 7.4 | 2 | 2.9 | 7.3 | 7.2 | 7.2 | — |
AIR QUALITY QUESTIONS
Thailand · air pollution - questions and answers
What do the latest air quality data show for Thailand?
Thailand - average concentrations across available points: PM2.5: 20.4 µg/m³, PM10: 21.4 µg/m³, O₃: 57.1 µg/m³, NO₂: 21.3 µg/m³, SO₂: 10.9 µg/m³, CO: 1,121.9 µg/m³. Date range: October 23, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in Thailand over the past week?
The highest available daily mean PM2.5 was 22.2 µg/m³ (October 22, 2026). This comparison covers 7 days with data in the seven days before October 23, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in Thailand have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Hat Yai (8.6 µg/m³). Highest PM2.5: Nakhon Pathom (63.1 µg/m³). This comparison covers 19 cities on October 23, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
What period does the pollution history for Thailand cover?
Available monthly means cover 2015-06 - 2020-05. The tables include PM10. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Thailand an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Thailand?
For October 22, 2026, the forecast UV index is 7.6. The UV section also shows the following available days.
What wind speed is forecast for Thailand?
For October 20, 2026, forecast wind speed is 7.7 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.