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Yoichi (Hokkaido) (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

Partly cloudy
7°C
Partly cloudy
Humidity
37.8%
Wind
7 m/s
Pressure
1009.8 hPa
Direction
168°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-0° / 7°
Precip.
6.8mm
Max wind
20.9 m/s

Hourly Forecast

20.03
Now
Weather
7
20.03
05:00
Weather
6
20.03
06:00
Weather
0.1
5
20.03
07:00
Weather
6
20.03
08:00
Weather
0.2
6
20.03
09:00
Weather
0.6
7
20.03
10:00
Weather
0.2
8
20.03
11:00
Weather
0.1
9
20.03
12:00
Weather
0.6
9
20.03
13:00
Weather
0.5
7
20.03
14:00
Weather
0.2
7
20.03
15:00
Weather
0.6
6
20.03
16:00
Weather
2.2
6
20.03
17:00
Weather
0.9
21
20.03
18:00
Weather
0.6
18
20.03
19:00
Weather
17
20.03
20:00
Weather
17
20.03
21:00
Weather
-0°
16
20.03
22:00
Weather
-0°
17
20.03
23:00
Weather
17
21.03
00:00
Weather
16
21.03
01:00
Weather
15
21.03
02:00
Weather
14
21.03
03:00
Weather
14

Temperature

7°C
-0°C
04:00
7°C
05:00
7°C
06:00
7°C
07:00
7°C
08:00
6°C
09:00
4°C
10:00
3°C
11:00
3°C
12:00
3°C
13:00
2°C
14:00
2°C
15:00
1°C
16:00
1°C
17:00
1°C
18:00
0°C
19:00
0°C
20:00
0°C
21:00
-0°C
22:00
-0°C
23:00
1°C
00:00
1°C
01:00
2°C
02:00
2°C
03:00
2°C
04:00 15:00 03:00

Precipitation

2.2mm
0mm
06:00
0.1mm
08:00
0.2mm
09:00
0.6mm
10:00
0.2mm
11:00
0.1mm
12:00
0.6mm
13:00
0.5mm
14:00
0.2mm
15:00
0.6mm
16:00
2.2mm
17:00
0.9mm
18:00
0.6mm
04:00 15:00 03:00

Wind

20.9m/s
0m/s
04:00
6.9 m/s
05:00
5.6 m/s
06:00
5.3 m/s
07:00
5.8 m/s
08:00
5.5 m/s
09:00
6.6 m/s
10:00
7.7 m/s
11:00
9.1 m/s
12:00
9.1 m/s
13:00
7.4 m/s
14:00
6.7 m/s
15:00
5.8 m/s
16:00
6.1 m/s
17:00
20.9 m/s
18:00
17.6 m/s
19:00
16.8 m/s
20:00
16.5 m/s
21:00
16.3 m/s
22:00
16.7 m/s
23:00
16.8 m/s
00:00
15.6 m/s
01:00
15.3 m/s
02:00
14.3 m/s
03:00
13.6 m/s
04:00 15:00 03:00

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
49.9 km
152
50.7%

Measurement time: 2026-03-20 04:00

Calculated from PM2.5/PM10

PM2.5
49.9 km
59 µg/m3
70.2%

Measurement time: 2026-03-20 04:00

source: Aqicn

O3
49.9 km
35.2 µg/m3
22%

Measurement time: 2026-03-20 04:00

source: Aqicn

PM10
49.9 km
15 µg/m3
10.7%

Measurement time: 2026-03-20 04:00

source: Aqicn

NO2
49.9 km
6.5 µg/m3
3.3%

Measurement time: 2026-03-20 04:00

source: Aqicn

SO2
49.9 km
1.5 µg/m3
0.4%

Measurement time: 2026-03-20 04:00

source: Aqicn

CO
49.9 km
0.0034 mg/m3
0%

Measurement time: 2026-03-20 04:00

source: Aqicn

Info


Country: Japan
Region: Hokkaido
Latitude: 43.20389
Longitude: 140.77028


Solar Energy

Moderate
326.3 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Yoichi

About Air Quality in Yoichi

Air quality in Yoichi 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 Yoichi

  • 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 Yoichi?

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 Yoichi

If you're planning outdoor activities in Yoichi, 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.