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Sasayama (Hyōgo) (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

Rain
11°C
Rain
Humidity
94.1%
Wind
2 m/s
Pressure
1011.2 hPa
Direction
356°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
6° / 11°
Precip.
3.3mm
Max wind
8.8 m/s

Hourly Forecast

27.02
Now
Weather
11°
0.5
27.02
09:00
Weather
10°
0.4
27.02
10:00
Weather
0.3
27.02
11:00
Weather
0.5
27.02
12:00
Weather
0.4
27.02
13:00
Weather
0.3
27.02
14:00
Weather
27.02
15:00
Weather
27.02
16:00
Weather
27.02
17:00
Weather
5
27.02
18:00
Weather
6
27.02
19:00
Weather
0.1
6
27.02
20:00
Weather
0.1
7
27.02
21:00
Weather
0.1
7
27.02
22:00
Weather
7
27.02
23:00
Weather
0.1
7
28.02
00:00
Weather
0.2
9
28.02
01:00
Weather
0.1
9
28.02
02:00
Weather
0.2
9
28.02
03:00
Weather
8
28.02
04:00
Weather
9
28.02
05:00
Weather
8
28.02
06:00
Weather
8
28.02
07:00
Weather
7

Temperature

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

Precipitation

0.5mm
0mm
08:00
0.5mm
09:00
0.4mm
10:00
0.3mm
11:00
0.5mm
12:00
0.4mm
13:00
0.3mm
19:00
0.1mm
20:00
0.1mm
21:00
0.1mm
23:00
0.1mm
00:00
0.2mm
01:00
0.1mm
02:00
0.2mm
08:00 19:00 07:00

Wind

8.8m/s
0m/s
08:00
2.4 m/s
09:00
3.1 m/s
10:00
4 m/s
11:00
3.2 m/s
12:00
3.1 m/s
13:00
3.3 m/s
14:00
3.4 m/s
15:00
4.2 m/s
16:00
4.9 m/s
17:00
5.4 m/s
18:00
6.1 m/s
19:00
6.2 m/s
20:00
6.8 m/s
21:00
6.8 m/s
22:00
7.3 m/s
23:00
6.9 m/s
00:00
8.8 m/s
01:00
8.6 m/s
02:00
8.6 m/s
03:00
8.3 m/s
04:00
8.8 m/s
05:00
8.4 m/s
06:00
8 m/s
07:00
7.2 m/s
08:00 19:00 07:00

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
49 km
151
50.3%

Measurement time: 2026-02-27 09:00

Calculated from PM2.5/PM10

PM2.5
49 km
57 µg/m3
67.9%

Measurement time: 2026-02-27 09:00

source: Aqicn

NO2
41.9 km
39.9 µg/m3
20%

Measurement time: 2026-02-27 08:00

source: Aqicn

O3
41.9 km
24.1 µg/m3
15.1%

Measurement time: 2026-02-27 08:00

source: Aqicn

PM10
49 km
16 µg/m3
11.4%

Measurement time: 2026-02-27 09:00

source: Aqicn

SO2
49 km
7.2 µg/m3
2.1%

Measurement time: 2026-02-27 09:00

source: Aqicn

CO
41.9 km
0.0034 mg/m3
0%

Measurement time: 2026-02-27 08:00

source: Aqicn

Info


Country: Japan
Region: Hyōgo
Latitude: 35.06667
Longitude: 135.21667


Solar Energy

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0 W/m²
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About Air Quality in Sasayama

Air quality in Sasayama 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 Sasayama

  • 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 Sasayama?

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 Sasayama

If you're planning outdoor activities in Sasayama, 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.