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Hitoyoshi (Kumamoto) (JP)

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

Cloudy
10°C
Cloudy
Humidity
92.2%
Wind
3 m/s
Pressure
1016.2 hPa
Direction
304°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
4° / 20°
Precip.
0mm
Max wind
3.8 m/s

Hourly Forecast

27.02
Now
Weather
10°
28.02
00:00
Weather
11°
28.02
01:00
Weather
13°
28.02
02:00
Weather
15°
28.02
03:00
Weather
17°
28.02
04:00
Weather
18°
28.02
05:00
Weather
19°
28.02
06:00
Weather
20°
28.02
07:00
Weather
19°
28.02
08:00
Weather
17°
28.02
09:00
Weather
14°
28.02
10:00
Weather
11°
28.02
11:00
Weather
10°
28.02
12:00
Weather
28.02
13:00
Weather
28.02
14:00
Weather
28.02
15:00
Weather
28.02
16:00
Weather
28.02
17:00
Weather
28.02
18:00
Weather
28.02
19:00
Weather
28.02
20:00
Weather
28.02
21:00
Weather
28.02
22:00
Weather

Temperature

20°C
4°C
23:00
10°C
00:00
11°C
01:00
13°C
02:00
15°C
03:00
17°C
04:00
18°C
05:00
19°C
06:00
20°C
07:00
19°C
08:00
17°C
09:00
14°C
10:00
11°C
11:00
10°C
12:00
9°C
13:00
8°C
14:00
8°C
15:00
7°C
16:00
7°C
17:00
6°C
18:00
6°C
19:00
5°C
20:00
4°C
21:00
4°C
22:00
4°C
23:00 10:00 22:00

Precipitation

0mm
0mm
23:00 10:00 22:00

Wind

3.8m/s
0m/s
23:00
3.1 m/s
00:00
3.8 m/s
01:00
2.5 m/s
02:00
1.8 m/s
03:00
2.4 m/s
04:00
2.9 m/s
05:00
3 m/s
06:00
3.3 m/s
07:00
3.2 m/s
08:00
3.2 m/s
09:00
2.1 m/s
10:00
1.8 m/s
11:00
1.2 m/s
12:00
1 m/s
13:00
1.1 m/s
14:00
1.2 m/s
15:00
1.2 m/s
16:00
1.1 m/s
17:00
1 m/s
18:00
0.9 m/s
19:00
1.1 m/s
20:00
1.4 m/s
21:00
1.2 m/s
22:00
1.4 m/s
23:00 10:00 22:00

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
63.3 km
97
32.3%

Measurement time: 2026-02-27 23:00

Calculated from PM2.5/PM10

O3
34.5 km
87.2 µg/m3
54.5%

Measurement time: 2026-02-27 23:28

source: OpenWeatherMap

PM2.5
63.3 km
34 µg/m3
40.5%

Measurement time: 2026-02-27 23:00

source: Aqicn

PM10
62.1 km
14.85 µg/m3
10.6%

Measurement time: 2026-02-28 00:19

source: OpenWeatherMap

SO2
62.1 km
36.25 µg/m3
10.4%

Measurement time: 2026-02-28 00:19

source: OpenWeatherMap

NO2
63.3 km
4.7 µg/m3
2.4%

Measurement time: 2026-02-27 23:00

source: Aqicn

CO
62.1 km
0.15789 mg/m3
1.1%

Measurement time: 2026-02-28 00:19

source: OpenWeatherMap

Info


Country: Japan
Region: Kumamoto
Latitude: 32.21667
Longitude: 130.75


Solar Energy

Low
299.4 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Hitoyoshi

About Air Quality in Hitoyoshi

Air quality in Hitoyoshi 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 Hitoyoshi

  • 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 Hitoyoshi?

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 Hitoyoshi

If you're planning outdoor activities in Hitoyoshi, 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.