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
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
32.86°C (Feels like 35.73°C)
Humidity 49% / Wind 6.40 m/s
Nonthaburi
overcast clouds
Latest PM2.5
2.00
PM10
2.00
overcast clouds
33.25°C (Feels like 36.50°C)
Humidity 49% / Wind 6.37 m/s
Pak Kret
overcast clouds
Latest PM2.5
2.00
PM10
2.00
overcast clouds
33.36°C (Feels like 36.73°C)
Humidity 49% / Wind 6.63 m/s
Pathum Thani
overcast clouds
Latest PM2.5
3.00
PM10
3.00
overcast clouds
33.51°C (Feels like 37.34°C)
Humidity 50% / Wind 7.11 m/s
Rangsit
overcast clouds
Latest PM2.5
3.00
PM10
3.00
overcast clouds
33.52°C (Feels like 37.05°C)
Humidity 49% / Wind 6.97 m/s
Samut Prakan
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
31.78°C (Feels like 34.93°C)
Humidity 54% / Wind 7.96 m/s
Phra Pradaeng
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
32.31°C (Feels like 35.20°C)
Humidity 51% / Wind 7.18 m/s
Bang Phli
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
31.67°C (Feels like 34.23°C)
Humidity 52% / Wind 7.41 m/s
Samut Sakhon
overcast clouds
Latest PM2.5
1.00
PM10
1.00
overcast clouds
31.98°C (Feels like 35.60°C)
Humidity 55% / Wind 7.25 m/s
Nakhon Pathom
overcast clouds
Latest PM2.5
1.00
PM10
1.00
overcast clouds
32.49°C (Feels like 36.10°C)
Humidity 53% / Wind 7.29 m/s
Chachoengsao
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
31.08°C (Feels like 33.37°C)
Humidity 53% / Wind 7.30 m/s
Ayutthaya
overcast clouds
Latest PM2.5
3.00
PM10
4.00
overcast clouds
34.10°C (Feels like 39.31°C)
Humidity 52% / Wind 7.34 m/s
Chon Buri
overcast clouds
Latest PM2.5
1.00
PM10
2.00
overcast clouds
26.09°C (Feels like 26.09°C)
Humidity 53% / Wind 6.48 m/s
Chiang Mai
overcast clouds
Latest PM2.5
22.00
PM10
23.00
overcast clouds
36.56°C (Feels like 43.56°C)
Humidity 48% / Wind 1.32 m/s
Phuket
overcast clouds
Latest PM2.5
5.00
PM10
12.00
overcast clouds
28.38°C (Feels like 33.07°C)
Humidity 80% / Wind 7.15 m/s
Pattaya
overcast clouds
Latest PM2.5
1.00
PM10
3.00
overcast clouds
26.08°C (Feels like 26.08°C)
Humidity 58% / Wind 7.21 m/s
Rayong
overcast clouds
Latest PM2.5
1.00
PM10
4.00
overcast clouds
31.86°C (Feels like 38.86°C)
Humidity 69% / Wind 6.28 m/s
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