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Sasebo (Nagasaki) (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

Heavy rain
16°C
Heavy rain
Humidity
91.3%
Wind
5 m/s
Pressure
1005.1 hPa
Direction
282°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
10° / 17°
Precip.
1.8mm
Max wind
7.4 m/s

Hourly Forecast

10.04
Now
Weather
16°
1.8
5
10.04
03:00
Weather
15°
10.04
04:00
Weather
16°
10.04
05:00
Weather
16°
6
10.04
06:00
Weather
17°
10.04
07:00
Weather
16°
10.04
08:00
Weather
15°
10.04
09:00
Weather
14°
10.04
10:00
Weather
12°
10.04
11:00
Weather
12°
10.04
12:00
Weather
12°
10.04
13:00
Weather
12°
6
10.04
14:00
Weather
12°
7
10.04
15:00
Weather
11°
7
10.04
16:00
Weather
11°
7
10.04
17:00
Weather
10°
6
10.04
18:00
Weather
10°
6
10.04
19:00
Weather
10°
6
10.04
20:00
Weather
10°
6
10.04
21:00
Weather
10°
6
10.04
22:00
Weather
11°
6
10.04
23:00
Weather
12°
11.04
00:00
Weather
14°
11.04
01:00
Weather
16°

Temperature

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

Precipitation

1.8mm
0mm
02:00
1.8mm
02:00 13:00 01:00

Wind

7.4m/s
0m/s
02:00
5.4 m/s
03:00
4.5 m/s
04:00
5 m/s
05:00
5.8 m/s
06:00
4.3 m/s
07:00
4.6 m/s
08:00
4.5 m/s
09:00
4.1 m/s
10:00
4.1 m/s
11:00
4.6 m/s
12:00
4.9 m/s
13:00
6 m/s
14:00
7.4 m/s
15:00
7.3 m/s
16:00
7 m/s
17:00
5.9 m/s
18:00
5.7 m/s
19:00
6.1 m/s
20:00
6.4 m/s
21:00
6.3 m/s
22:00
5.7 m/s
23:00
4.4 m/s
00:00
3.6 m/s
01:00
2.7 m/s
02:00 13:00 01:00

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
80.1 km
69
23%

Measurement time: 2026-04-10 03:00

Calculated from PM2.5/PM10

O3
94.2 km
55.79 µg/m3
34.9%

Measurement time: 2026-04-10 02:11

source: OpenWeatherMap

PM2.5
80.1 km
21 µg/m3
25%

Measurement time: 2026-04-10 03:00

source: Aqicn

NO2
80.1 km
37.1 µg/m3
18.6%

Measurement time: 2026-04-10 03:00

source: Aqicn

PM10
94.2 km
15.11 µg/m3
10.8%

Measurement time: 2026-04-10 02:11

source: OpenWeatherMap

CO
94.2 km
0.13571 mg/m3
1%

Measurement time: 2026-04-10 02:11

source: OpenWeatherMap

SO2
94.2 km
2.93 µg/m3
0.8%

Measurement time: 2026-04-10 02:11

source: OpenWeatherMap

Info


Country: Japan
Region: Nagasaki
Latitude: 33.16834
Longitude: 129.72502


Solar Energy

Moderate
437 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Sasebo

About Air Quality in Sasebo

Air quality in Sasebo 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 Sasebo

  • 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 Sasebo?

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 Sasebo

If you're planning outdoor activities in Sasebo, 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.