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Phra Nakhon Si Ayutthaya (Phra Nakhon Si Ayutthaya) (TH)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Sans nuages
27°C
Sans nuages
Humidity
82.1%
Wind
3 m/s
Pressure
1006.6 hPa
Direction
177°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
24° / 35°
Precip.
0.7mm
Max wind
4.2 m/s

Hourly Forecast

27.02
Now
Weather
27°
27.02
19:00
Weather
26°
27.02
20:00
Weather
26°
0.7
27.02
21:00
Weather
25°
27.02
22:00
Weather
24°
27.02
23:00
Weather
24°
28.02
00:00
Weather
24°
28.02
01:00
Weather
25°
28.02
02:00
Weather
28°
28.02
03:00
Weather
30°
28.02
04:00
Weather
32°
28.02
05:00
Weather
33°
28.02
06:00
Weather
34°
28.02
07:00
Weather
35°
28.02
08:00
Weather
35°
28.02
09:00
Weather
35°
28.02
10:00
Weather
34°
28.02
11:00
Weather
33°
28.02
12:00
Weather
31°
28.02
13:00
Weather
30°
28.02
14:00
Weather
28°
28.02
15:00
Weather
28°
28.02
16:00
Weather
27°
28.02
17:00
Weather
27°

Temperature

35°C
24°C
18:00
27°C
19:00
26°C
20:00
26°C
21:00
25°C
22:00
24°C
23:00
24°C
00:00
24°C
01:00
25°C
02:00
28°C
03:00
30°C
04:00
32°C
05:00
33°C
06:00
34°C
07:00
35°C
08:00
35°C
09:00
35°C
10:00
34°C
11:00
33°C
12:00
31°C
13:00
30°C
14:00
28°C
15:00
28°C
16:00
27°C
17:00
27°C
18:00 05:00 17:00

Precipitation

0.7mm
0mm
20:00
0.7mm
18:00 05:00 17:00

Wind

4.2m/s
0m/s
18:00
3 m/s
19:00
2.9 m/s
20:00
3.7 m/s
21:00
3.1 m/s
22:00
3 m/s
23:00
3.4 m/s
00:00
3.4 m/s
01:00
3.3 m/s
02:00
3.8 m/s
03:00
3.3 m/s
04:00
3.1 m/s
05:00
3.3 m/s
06:00
3.4 m/s
07:00
3.4 m/s
08:00
3.1 m/s
09:00
3.3 m/s
10:00
3.5 m/s
11:00
2.8 m/s
12:00
3.6 m/s
13:00
4.1 m/s
14:00
4.2 m/s
15:00
4 m/s
16:00
3.7 m/s
17:00
3.1 m/s
18:00 05:00 17:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
66.7 km
155
51.7%

Measurement time: 2026-02-27 20:00

Calculated from PM2.5/PM10

PM2.5
66.7 km
65 µg/m3
77.4%

Measurement time: 2026-02-27 20:00

source: Aqicn

PM10
69.5 km
50 µg/m3
35.7%

Measurement time: 2026-02-27 18:00

source: Aqicn

NO2
69.5 km
15.6 µg/m3
7.8%

Measurement time: 2026-02-27 18:00

source: Aqicn

O3
49.6 km
6.4 µg/m3
4%

Measurement time: 2026-02-27 20:00

source: Aqicn

SO2
49.6 km
0.6 µg/m3
0.2%

Measurement time: 2026-02-27 20:00

source: Aqicn

CO
49.6 km
0.0001 mg/m3
0%

Measurement time: 2026-02-27 20:00

source: Aqicn

Info


Country: Thailand
Latitude: 14.35167
Longitude: 100.57739

Cities in the area:

About Air Quality in Phra Nakhon Si Ayutthaya

Air quality in Phra Nakhon Si Ayutthaya is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Phra Nakhon Si Ayutthaya

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Phra Nakhon Si Ayutthaya?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Phra Nakhon Si Ayutthaya

If you're planning outdoor activities in Phra Nakhon Si Ayutthaya, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.