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Muroran (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

Light snow showers
-1°C
Light snow showers
Humidity
73.6%
Wind
9 m/s
Pressure
1013 hPa
Direction
290°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / -1°
Precip.
1.5mm
Max wind
10.3 m/s

Hourly Forecast

01.02
Now
Weather
-1°
0.2
9
01.02
18:00
Weather
-1°
0.1
9
01.02
19:00
Weather
-1°
0.5
9
01.02
20:00
Weather
-2°
0.3
9
01.02
21:00
Weather
-2°
9
01.02
22:00
Weather
-2°
9
01.02
23:00
Weather
-2°
8
02.02
00:00
Weather
-2°
0.1
8
02.02
01:00
Weather
-2°
8
02.02
02:00
Weather
-1°
9
02.02
03:00
Weather
-1°
9
02.02
04:00
Weather
-1°
9
02.02
05:00
Weather
-1°
9
02.02
06:00
Weather
-1°
0.1
10
02.02
07:00
Weather
-1°
0.1
10
02.02
08:00
Weather
-1°
10
02.02
09:00
Weather
-1°
10
02.02
10:00
Weather
-1°
10
02.02
11:00
Weather
-1°
9
02.02
12:00
Weather
-1°
9
02.02
13:00
Weather
-1°
0.1
8
02.02
14:00
Weather
-1°
9
02.02
15:00
Weather
-2°
8
02.02
16:00
Weather
-2°
7

Temperature

-1°C
-2°C
17:00
-1°C
18:00
-1°C
19:00
-1°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
-1°C
03:00
-1°C
04:00
-1°C
05:00
-1°C
06:00
-1°C
07:00
-1°C
08:00
-1°C
09:00
-1°C
10:00
-1°C
11:00
-1°C
12:00
-1°C
13:00
-1°C
14:00
-1°C
15:00
-2°C
16:00
-2°C
17:00 04:00 16:00

Precipitation

0.5mm
0mm
17:00
0.2mm
18:00
0.1mm
19:00
0.5mm
20:00
0.3mm
00:00
0.1mm
06:00
0.1mm
07:00
0.1mm
13:00
0.1mm
17:00 04:00 16:00

Wind

10.3m/s
0m/s
17:00
8.5 m/s
18:00
8.8 m/s
19:00
8.7 m/s
20:00
8.8 m/s
21:00
8.7 m/s
22:00
8.6 m/s
23:00
8 m/s
00:00
7.6 m/s
01:00
8.2 m/s
02:00
8.5 m/s
03:00
9 m/s
04:00
9.2 m/s
05:00
9.4 m/s
06:00
9.5 m/s
07:00
10 m/s
08:00
10.3 m/s
09:00
10.2 m/s
10:00
9.9 m/s
11:00
9.2 m/s
12:00
8.7 m/s
13:00
8.3 m/s
14:00
8.8 m/s
15:00
8 m/s
16:00
6.6 m/s
17:00 04:00 16:00

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
88.1 km
37
12.3%

Measurement time: 2026-02-01 17:00

Calculated from PM2.5/PM10

O3
88.1 km
24.1 µg/m3
15.1%

Measurement time: 2026-02-01 17:00

source: Aqicn

PM2.5
88.1 km
9 µg/m3
10.7%

Measurement time: 2026-02-01 17:00

source: Aqicn

NO2
88.1 km
14.9 µg/m3
7.4%

Measurement time: 2026-02-01 17:00

source: Aqicn

PM10
88.1 km
4 µg/m3
2.9%

Measurement time: 2026-02-01 17:00

source: Aqicn

SO2
88.1 km
1.5 µg/m3
0.4%

Measurement time: 2026-02-01 17:00

source: Aqicn

CO
88.1 km
0.0023 mg/m3
0%

Measurement time: 2026-02-01 17:00

source: Aqicn

Info


Country: Japan
Region: Hokkaido
Latitude: 42.31722
Longitude: 140.98806


Solar Energy

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0 W/m²
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About Air Quality in Muroran

Air quality in Muroran 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 Muroran

  • 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 Muroran?

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 Muroran

If you're planning outdoor activities in Muroran, 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.