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Oyama (Tochigi) (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
16°C
Cloudy
Humidity
65.5%
Wind
5 m/s
Pressure
1015.6 hPa
Direction
159°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
14° / 18°
Precip.
12.2mm
Max wind
7.1 m/s

Hourly Forecast

09.04
Now
Weather
16°
09.04
10:00
Weather
16°
5
09.04
11:00
Weather
15°
6
09.04
12:00
Weather
15°
7
09.04
13:00
Weather
15°
7
09.04
14:00
Weather
15°
7
09.04
15:00
Weather
15°
0.1
6
09.04
16:00
Weather
15°
1.1
6
09.04
17:00
Weather
14°
1.2
09.04
18:00
Weather
14°
1.6
09.04
19:00
Weather
14°
0.3
09.04
20:00
Weather
14°
6
09.04
21:00
Weather
15°
6
09.04
22:00
Weather
16°
6
09.04
23:00
Weather
16°
6
10.04
00:00
Weather
17°
0.2
10.04
01:00
Weather
17°
0.5
6
10.04
02:00
Weather
17°
0.3
6
10.04
03:00
Weather
17°
0.5
6
10.04
04:00
Weather
17°
0.6
7
10.04
05:00
Weather
17°
0.5
7
10.04
06:00
Weather
18°
0.9
7
10.04
07:00
Weather
18°
1
10.04
08:00
Weather
18°
3.4

Temperature

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

Precipitation

3.4mm
0mm
15:00
0.1mm
16:00
1.1mm
17:00
1.2mm
18:00
1.6mm
19:00
0.3mm
00:00
0.2mm
01:00
0.5mm
02:00
0.3mm
03:00
0.5mm
04:00
0.6mm
05:00
0.5mm
06:00
0.9mm
07:00
1mm
08:00
3.4mm
09:00 20:00 08:00

Wind

7.1m/s
0m/s
09:00
4.5 m/s
10:00
5.1 m/s
11:00
5.7 m/s
12:00
6.5 m/s
13:00
6.9 m/s
14:00
6.5 m/s
15:00
6.2 m/s
16:00
6.2 m/s
17:00
5 m/s
18:00
3.7 m/s
19:00
4.8 m/s
20:00
6.1 m/s
21:00
6.1 m/s
22:00
6 m/s
23:00
6.2 m/s
00:00
5 m/s
01:00
6.2 m/s
02:00
6.3 m/s
03:00
6.4 m/s
04:00
6.7 m/s
05:00
7.1 m/s
06:00
7 m/s
07:00
4.7 m/s
08:00
2.1 m/s
09:00 20:00 08:00

Radiation

0.059 uSv
72.6 km
7.4%

Measurement time: 2026-04-09 07:00

source: remap_europe

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
96.3 km
107
35.7%

Measurement time: 2026-04-09 10:00

Calculated from PM2.5/PM10

PM2.5
96.3 km
38 µg/m3
45.2%

Measurement time: 2026-04-09 10:00

source: Aqicn

O3
96.3 km
47.2 µg/m3
29.5%

Measurement time: 2026-04-09 10:00

source: Aqicn

PM10
96.3 km
15 µg/m3
10.7%

Measurement time: 2026-04-09 10:00

source: Aqicn

NO2
87.5 km
11.2 µg/m3
5.6%

Measurement time: 2026-04-09 10:00

source: Aqicn

SO2
96.3 km
2.9 µg/m3
0.8%

Measurement time: 2026-04-09 10:00

source: Aqicn

CO
67.5 km
0.0023 mg/m3
0%

Measurement time: 2026-04-09 10:00

source: Aqicn

Info


Country: Japan
Region: Tochigi
Latitude: 36.3
Longitude: 139.8


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About Air Quality in Oyama

Air quality in Oyama 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 Oyama

  • 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 Oyama?

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 Oyama

If you're planning outdoor activities in Oyama, 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.