AQI Level Health implications Advice
0–50 Good Air quality is satisfactory; little or no risk. None.
51–100 Moderate Acceptable; some pollutants may be a concern for a small number of sensitive people. Sensitive people: limit prolonged outdoor exertion.
101–150 Unhealthy for Sensitive Groups Sensitive groups may experience health effects; general public less likely. Sensitive people: reduce prolonged/heavy outdoor exertion.
151–200 Unhealthy Some people may experience health effects; sensitive groups may have more serious effects. Reduce prolonged/heavy outdoor exertion; sensitive people should avoid it.
201–300 Very Unhealthy Health alert: increased risk for everyone. Avoid prolonged/heavy outdoor exertion; sensitive people stay indoors if possible.
301+ Hazardous Health warning: emergency conditions; everyone is more likely affected. Avoid outdoor activity as much as possible.
US AQI (United States Air Quality Index) is an air quality index defined by the U.S. Environmental Protection Agency (EPA). The index ranges from 0 to 500, and higher values indicate greater potential health impacts. It is based on major air pollutants such as PM2.5, PM10, ozone (O₃), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), and carbon monoxide (CO), and is widely used by many websites worldwide, including AQICN (World Air Quality Index).

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Bangkok
scattered clouds
Latest PM2.5
27.52
PM10
31.49
scattered clouds
30.02°C (Feels like 35.83°C)
Humidity 73% / Wind 1.21 m/s
Nonthaburi
few clouds
Latest PM2.5
31.29
PM10
35.67
few clouds
31.17°C (Feels like 33.99°C)
Humidity 55% / Wind 1.54 m/s
Pak Kret
few clouds
Latest PM2.5
31.29
PM10
35.67
few clouds
30.87°C (Feels like 33.42°C)
Humidity 55% / Wind 1.54 m/s
Pathum Thani
few clouds
Latest PM2.5
35.06
PM10
39.85
few clouds
30.68°C (Feels like 33.29°C)
Humidity 56% / Wind 1.54 m/s
Rangsit
few clouds
Latest PM2.5
32.04
PM10
37.54
few clouds
30.56°C (Feels like 32.86°C)
Humidity 55% / Wind 1.54 m/s
Samut Prakan
scattered clouds
Latest PM2.5
28.33
PM10
32.30
scattered clouds
29.45°C (Feels like 33.74°C)
Humidity 70% / Wind 2.24 m/s
Phra Pradaeng
scattered clouds
Latest PM2.5
27.52
PM10
31.49
scattered clouds
29.54°C (Feels like 33.94°C)
Humidity 70% / Wind 2.24 m/s
Bang Phli
scattered clouds
Latest PM2.5
27.77
PM10
32.69
scattered clouds
30.99°C (Feels like 32.80°C)
Humidity 51% / Wind 2.06 m/s
Samut Sakhon
broken clouds
Latest PM2.5
29.21
PM10
32.25
broken clouds
31.02°C (Feels like 34.16°C)
Humidity 57% / Wind 1.99 m/s
Nakhon Pathom
scattered clouds
Latest PM2.5
32.60
PM10
35.81
scattered clouds
31.59°C (Feels like 33.41°C)
Humidity 49% / Wind 1.01 m/s
Chachoengsao
few clouds
Latest PM2.5
26.30
PM10
31.73
few clouds
31.01°C (Feels like 35.12°C)
Humidity 61% / Wind 1.00 m/s
Ayutthaya
scattered clouds
Latest PM2.5
38.84
PM10
44.02
scattered clouds
31.66°C (Feels like 36.87°C)
Humidity 62% / Wind 1.61 m/s
Chon Buri
scattered clouds
Latest PM2.5
25.10
PM10
30.92
scattered clouds
32.43°C (Feels like 39.43°C)
Humidity 79% / Wind 3.55 m/s
Chiang Mai
clear sky
Latest PM2.5
14.63
PM10
15.68
clear sky
29.55°C (Feels like 30.13°C)
Humidity 48% / Wind 1.62 m/s
Phuket
broken clouds
Latest PM2.5
4.80
PM10
5.87
broken clouds
30.06°C (Feels like 35.43°C)
Humidity 71% / Wind 1.43 m/s
Pattaya
broken clouds
Latest PM2.5
22.63
PM10
28.28
broken clouds
31.01°C (Feels like 35.64°C)
Humidity 63% / Wind 3.75 m/s
Rayong
scattered clouds
Latest PM2.5
20.40
PM10
25.07
scattered clouds
32.21°C (Feels like 39.21°C)
Humidity 78% / Wind 5.36 m/s
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