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Rumoi (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

Cloudy
-1°C
Cloudy
Humidity
67.8%
Wind
12 m/s
Pressure
1015.6 hPa
Direction
257°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-1° / 2°
Precip.
0mm
Max wind
15.8 m/s

Hourly Forecast

03.02
Now
Weather
-1°
12
03.02
07:00
Weather
-1°
13
03.02
08:00
Weather
-0°
13
03.02
09:00
Weather
-0°
13
03.02
10:00
Weather
-0°
13
03.02
11:00
Weather
-0°
14
03.02
12:00
Weather
15
03.02
13:00
Weather
16
03.02
14:00
Weather
16
03.02
15:00
Weather
15
03.02
16:00
Weather
15
03.02
17:00
Weather
14
03.02
18:00
Weather
15
03.02
19:00
Weather
14
03.02
20:00
Weather
12
03.02
21:00
Weather
11
03.02
22:00
Weather
10
03.02
23:00
Weather
10
04.02
00:00
Weather
10
04.02
01:00
Weather
10
04.02
02:00
Weather
10
04.02
03:00
Weather
10
04.02
04:00
Weather
10
04.02
05:00
Weather
10

Temperature

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

Precipitation

0mm
0mm
06:00 17:00 05:00

Wind

15.8m/s
0m/s
06:00
12 m/s
07:00
12.5 m/s
08:00
12.8 m/s
09:00
12.8 m/s
10:00
13 m/s
11:00
14 m/s
12:00
14.8 m/s
13:00
15.5 m/s
14:00
15.8 m/s
15:00
15.3 m/s
16:00
14.8 m/s
17:00
14 m/s
18:00
14.8 m/s
19:00
13.6 m/s
20:00
12.4 m/s
21:00
11.1 m/s
22:00
10.4 m/s
23:00
10 m/s
00:00
10 m/s
01:00
9.9 m/s
02:00
9.9 m/s
03:00
10 m/s
04:00
10.2 m/s
05:00
10 m/s
06:00 17:00 05:00

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
99.7 km
126
42%

Measurement time: 2026-02-03 06:00

Calculated from PM2.5/PM10

PM2.5
99.7 km
46 µg/m3
54.8%

Measurement time: 2026-02-03 06:00

source: Aqicn

NO2
99.7 km
31.5 µg/m3
15.8%

Measurement time: 2026-02-03 06:00

source: Aqicn

PM10
99.7 km
12 µg/m3
8.6%

Measurement time: 2026-02-03 06:00

source: Aqicn

O3
99.7 km
12.8 µg/m3
8%

Measurement time: 2026-02-03 06:00

source: Aqicn

SO2
99.7 km
4.3 µg/m3
1.2%

Measurement time: 2026-02-03 06:00

source: Aqicn

CO
99.7 km
0.0045 mg/m3
0%

Measurement time: 2026-02-03 06:00

source: Aqicn

Info


Country: Japan
Region: Hokkaido
Latitude: 43.93444
Longitude: 141.64278


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About Air Quality in Rumoi

Air quality in Rumoi 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 Rumoi

  • 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 Rumoi?

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 Rumoi

If you're planning outdoor activities in Rumoi, 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.