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Tochio-honchō (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

Heavy sleet
2°C
Heavy sleet
Humidity
87.4%
Wind
3 m/s
Pressure
1019.6 hPa
Direction
257°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-3° / 2°
Precip.
7.7mm
Max wind
3.4 m/s

Hourly Forecast

02.02
Now
Weather
1.4
02.02
04:00
Weather
0.5
02.02
05:00
Weather
1
02.02
06:00
Weather
0.2
02.02
07:00
Weather
0.3
02.02
08:00
Weather
-0°
0.6
02.02
09:00
Weather
0.7
02.02
10:00
Weather
0.7
02.02
11:00
Weather
-0°
0.4
02.02
12:00
Weather
-0°
0.4
02.02
13:00
Weather
-1°
0.4
02.02
14:00
Weather
-1°
0.2
02.02
15:00
Weather
-1°
0.2
02.02
16:00
Weather
-1°
0.1
02.02
17:00
Weather
-1°
02.02
18:00
Weather
-1°
0.2
02.02
19:00
Weather
-1°
02.02
20:00
Weather
-1°
02.02
21:00
Weather
-3°
02.02
22:00
Weather
-3°
02.02
23:00
Weather
-2°
03.02
00:00
Weather
-0°
0.1
03.02
01:00
Weather
0.3
03.02
02:00
Weather

Temperature

2°C
-3°C
03:00
2°C
04:00
1°C
05:00
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
-1°C
18:00
-1°C
19:00
-1°C
20:00
-1°C
21:00
-3°C
22:00
-3°C
23:00
-2°C
00:00
-0°C
01:00
1°C
02:00
1°C
03:00 14:00 02:00

Precipitation

1.4mm
0mm
03:00
1.4mm
04:00
0.5mm
05:00
1mm
06:00
0.2mm
07:00
0.3mm
08:00
0.6mm
09:00
0.7mm
10:00
0.7mm
11:00
0.4mm
12:00
0.4mm
13:00
0.4mm
14:00
0.2mm
15:00
0.2mm
16:00
0.1mm
18:00
0.2mm
00:00
0.1mm
01:00
0.3mm
03:00 14:00 02:00

Wind

3.4m/s
0m/s
03:00
2.6 m/s
04:00
3.1 m/s
05:00
2.6 m/s
06:00
2.7 m/s
07:00
1.9 m/s
08:00
1.1 m/s
09:00
1.5 m/s
10:00
1.4 m/s
11:00
1.2 m/s
12:00
0.9 m/s
13:00
0.5 m/s
14:00
1 m/s
15:00
1.3 m/s
16:00
1.4 m/s
17:00
2.5 m/s
18:00
2.6 m/s
19:00
1.6 m/s
20:00
1.7 m/s
21:00
1.4 m/s
22:00
1.7 m/s
23:00
1.4 m/s
00:00
2.1 m/s
01:00
3.1 m/s
02:00
3.4 m/s
03:00 14:00 02:00

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
36 km
11
3.7%

Measurement time: 2026-02-02 02:46

Calculated from PM2.5/PM10

O3
36 km
82.34 µg/m3
51.5%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

SO2
36 km
13.56 µg/m3
3.9%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

PM2.5
36 km
2.82 µg/m3
3.4%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

NO2
36 km
6.1 µg/m3
3.1%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

PM10
36 km
3.13 µg/m3
2.2%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

CO
36 km
0.18798 mg/m3
1.3%

Measurement time: 2026-02-02 02:46

source: OpenWeatherMap

Info


Country: Japan
Region: Niigata
Latitude: 37.47642
Longitude: 138.99513

Cities in the area:


Solar Energy

Low
254.2 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Tochio-honchō

About Air Quality in Tochio-honchō

Air quality in Tochio-honchō 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 Tochio-honchō

  • 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 Tochio-honchō?

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 Tochio-honchō

If you're planning outdoor activities in Tochio-honchō, 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.