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Muramatsu (Niigata) (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

Snow
1°C
Snow
Humidity
88.6%
Wind
2 m/s
Pressure
1018.6 hPa
Direction
226°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-5° / 2°
Precip.
1.6mm
Max wind
5.4 m/s

Hourly Forecast

02.02
Now
Weather
0.3
02.02
08:00
Weather
-0°
0.2
02.02
09:00
Weather
-0°
0.3
02.02
10:00
Weather
-1°
0.2
02.02
11:00
Weather
-1°
0.2
02.02
12:00
Weather
-2°
0.2
02.02
13:00
Weather
-2°
0.2
02.02
14:00
Weather
-1°
02.02
15:00
Weather
-1°
02.02
16:00
Weather
-1°
02.02
17:00
Weather
-2°
02.02
18:00
Weather
-3°
02.02
19:00
Weather
-4°
02.02
20:00
Weather
-5°
02.02
21:00
Weather
-5°
02.02
22:00
Weather
-4°
02.02
23:00
Weather
-2°
03.02
00:00
Weather
-1°
03.02
01:00
Weather
03.02
02:00
Weather
03.02
03:00
Weather
5
03.02
04:00
Weather
5
03.02
05:00
Weather
5
03.02
06:00
Weather
5

Temperature

2°C
-5°C
07:00
1°C
08:00
-0°C
09:00
-0°C
10:00
-1°C
11:00
-1°C
12:00
-2°C
13:00
-2°C
14:00
-1°C
15:00
-1°C
16:00
-1°C
17:00
-2°C
18:00
-3°C
19:00
-4°C
20:00
-5°C
21:00
-5°C
22:00
-4°C
23:00
-2°C
00:00
-1°C
01:00
1°C
02:00
2°C
03:00
2°C
04:00
2°C
05:00
2°C
06:00
2°C
07:00 18:00 06:00

Precipitation

0.3mm
0mm
07:00
0.3mm
08:00
0.2mm
09:00
0.3mm
10:00
0.2mm
11:00
0.2mm
12:00
0.2mm
13:00
0.2mm
07:00 18:00 06:00

Wind

5.4m/s
0m/s
07:00
1.5 m/s
08:00
1.4 m/s
09:00
1.6 m/s
10:00
2.1 m/s
11:00
1.9 m/s
12:00
2.1 m/s
13:00
2.4 m/s
14:00
2.7 m/s
15:00
2.6 m/s
16:00
2.5 m/s
17:00
3 m/s
18:00
2.9 m/s
19:00
3.3 m/s
20:00
3.2 m/s
21:00
3.3 m/s
22:00
3.6 m/s
23:00
3.7 m/s
00:00
4.2 m/s
01:00
4.3 m/s
02:00
4.7 m/s
03:00
5.4 m/s
04:00
5.4 m/s
05:00
5.4 m/s
06:00
5.2 m/s
07:00 18:00 06:00

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
11.8 km
52
17.3%

Measurement time: 2026-02-02 06:00

Calculated from PM2.5/PM10

O3
13.5 km
98.02 µg/m3
61.3%

Measurement time: 2026-02-02 07:12

source: OpenWeatherMap

PM2.5
11.8 km
13 µg/m3
15.5%

Measurement time: 2026-02-02 06:00

source: Aqicn

NO2
11.8 km
13 µg/m3
6.5%

Measurement time: 2026-02-02 06:00

source: Aqicn

PM10
11.8 km
3 µg/m3
2.1%

Measurement time: 2026-02-02 06:00

source: Aqicn

SO2
13.5 km
4.93 µg/m3
1.4%

Measurement time: 2026-02-02 07:12

source: OpenWeatherMap

CO
13.5 km
0.15306 mg/m3
1.1%

Measurement time: 2026-02-02 07:12

source: OpenWeatherMap

Info


Country: Japan
Region: Niigata
Latitude: 37.69257
Longitude: 139.17127

Cities in the area:


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0 W/m²
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About Air Quality in Muramatsu

Air quality in Muramatsu 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 Muramatsu

  • 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 Muramatsu?

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 Muramatsu

If you're planning outdoor activities in Muramatsu, 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.