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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

Хмарно
10°C
Хмарно
Humidity
75.6%
Wind
2 m/s
Pressure
1011.1 hPa
Direction
303°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
3° / 10°
Precip.
6.2mm
Max wind
5.6 m/s

Hourly Forecast

27.02
Now
Weather
10°
27.02
09:00
Weather
27.02
10:00
Weather
27.02
11:00
Weather
27.02
12:00
Weather
27.02
13:00
Weather
27.02
14:00
Weather
27.02
15:00
Weather
27.02
16:00
Weather
27.02
17:00
Weather
27.02
18:00
Weather
27.02
19:00
Weather
0.4
27.02
20:00
Weather
1
27.02
21:00
Weather
1
27.02
22:00
Weather
1
27.02
23:00
Weather
0.5
28.02
00:00
Weather
28.02
01:00
Weather
0.2
28.02
02:00
Weather
0.1
28.02
03:00
Weather
10°
0.5
5
28.02
04:00
Weather
0.4
28.02
05:00
Weather
0.7
5
28.02
06:00
Weather
0.3
6
28.02
07:00
Weather
0.1
5

Temperature

10°C
3°C
08:00
10°C
09:00
7°C
10:00
6°C
11:00
5°C
12:00
4°C
13:00
3°C
14:00
3°C
15:00
4°C
16:00
5°C
17:00
5°C
18:00
5°C
19:00
5°C
20:00
5°C
21:00
5°C
22:00
5°C
23:00
5°C
00:00
6°C
01:00
7°C
02:00
8°C
03:00
10°C
04:00
9°C
05:00
9°C
06:00
8°C
07:00
8°C
08:00 19:00 07:00

Precipitation

1mm
0mm
19:00
0.4mm
20:00
1mm
21:00
1mm
22:00
1mm
23:00
0.5mm
01:00
0.2mm
02:00
0.1mm
03:00
0.5mm
04:00
0.4mm
05:00
0.7mm
06:00
0.3mm
07:00
0.1mm
08:00 19:00 07:00

Wind

5.6m/s
0m/s
08:00
1.8 m/s
09:00
1.3 m/s
10:00
2 m/s
11:00
2.1 m/s
12:00
1.5 m/s
13:00
0.7 m/s
14:00
1 m/s
15:00
1.2 m/s
16:00
2 m/s
17:00
2.3 m/s
18:00
2.4 m/s
19:00
2.8 m/s
20:00
2.7 m/s
21:00
2.8 m/s
22:00
3.4 m/s
23:00
3.3 m/s
00:00
3.2 m/s
01:00
4.1 m/s
02:00
4.7 m/s
03:00
5.2 m/s
04:00
4.6 m/s
05:00
5.2 m/s
06:00
5.6 m/s
07:00
5.3 m/s
08:00 19:00 07:00

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
11.9 km
126
42%

Measurement time: 2026-02-27 07:00

Calculated from PM2.5/PM10

PM2.5
11.9 km
46 µg/m3
54.8%

Measurement time: 2026-02-27 07:00

source: Aqicn

O3
35.9 km
77.92 µg/m3
48.7%

Measurement time: 2026-02-27 08:42

source: OpenWeatherMap

PM10
35.9 km
13.5 µg/m3
9.6%

Measurement time: 2026-02-27 08:42

source: OpenWeatherMap

NO2
11.9 km
13 µg/m3
6.5%

Measurement time: 2026-02-27 07:00

source: Aqicn

SO2
35.9 km
6.27 µg/m3
1.8%

Measurement time: 2026-02-27 08:42

source: OpenWeatherMap

CO
35.9 km
0.18751 mg/m3
1.3%

Measurement time: 2026-02-27 08:42

source: OpenWeatherMap

Info


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

Cities in the area:

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.