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Nagai (Yamagata) (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

Clear sky
7°C
Clear sky
Humidity
43.8%
Wind
5 m/s
Pressure
1012 hPa
Direction
281°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-0° / 7°
Precip.
3mm
Max wind
10.7 m/s

Hourly Forecast

20.03
Now
Weather
20.03
09:00
Weather
20.03
10:00
Weather
5
20.03
11:00
Weather
0.3
7
20.03
12:00
Weather
1.5
8
20.03
13:00
Weather
0.8
9
20.03
14:00
Weather
0.2
10
20.03
15:00
Weather
-0°
10
20.03
16:00
Weather
-0°
0.2
9
20.03
17:00
Weather
-0°
8
20.03
18:00
Weather
8
20.03
19:00
Weather
-0°
8
20.03
20:00
Weather
-0°
8
20.03
21:00
Weather
-0°
8
20.03
22:00
Weather
8
20.03
23:00
Weather
10
21.03
00:00
Weather
11
21.03
01:00
Weather
11
21.03
02:00
Weather
11
21.03
03:00
Weather
11
21.03
04:00
Weather
11
21.03
05:00
Weather
10
21.03
06:00
Weather
10
21.03
07:00
Weather
9

Temperature

7°C
-0°C
08:00
7°C
09:00
5°C
10:00
4°C
11:00
3°C
12:00
3°C
13:00
2°C
14:00
1°C
15:00
-0°C
16:00
-0°C
17:00
-0°C
18:00
0°C
19:00
-0°C
20:00
-0°C
21:00
-0°C
22:00
1°C
23:00
2°C
00:00
2°C
01:00
3°C
02:00
3°C
03:00
4°C
04:00
4°C
05:00
4°C
06:00
4°C
07:00
4°C
08:00 19:00 07:00

Precipitation

1.5mm
0mm
11:00
0.3mm
12:00
1.5mm
13:00
0.8mm
14:00
0.2mm
16:00
0.2mm
08:00 19:00 07:00

Wind

10.7m/s
0m/s
08:00
4.8 m/s
09:00
4.3 m/s
10:00
5.2 m/s
11:00
7.3 m/s
12:00
7.9 m/s
13:00
9.2 m/s
14:00
10 m/s
15:00
10.4 m/s
16:00
9.4 m/s
17:00
8.2 m/s
18:00
7.7 m/s
19:00
7.9 m/s
20:00
7.9 m/s
21:00
7.9 m/s
22:00
7.6 m/s
23:00
10 m/s
00:00
10.7 m/s
01:00
10.5 m/s
02:00
10.7 m/s
03:00
10.7 m/s
04:00
10.6 m/s
05:00
10.2 m/s
06:00
9.7 m/s
07:00
8.8 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
78.8 km
126
42%

Measurement time: 2026-03-20 08:00

Calculated from PM2.5/PM10

O3
78.7 km
105.42 µg/m3
65.9%

Measurement time: 2026-03-20 09:42

source: OpenWeatherMap

PM2.5
78.8 km
46 µg/m3
54.8%

Measurement time: 2026-03-20 08:00

source: Aqicn

PM10
78.8 km
10 µg/m3
7.1%

Measurement time: 2026-03-20 08:00

source: Aqicn

NO2
78.7 km
7.63 µg/m3
3.8%

Measurement time: 2026-03-20 09:42

source: OpenWeatherMap

SO2
78.8 km
7.2 µg/m3
2.1%

Measurement time: 2026-03-20 08:00

source: Aqicn

CO
78.7 km
0.17417 mg/m3
1.2%

Measurement time: 2026-03-20 09:42

source: OpenWeatherMap

Info


Country: Japan
Region: Yamagata
Latitude: 38.10361
Longitude: 140.035


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About Air Quality in Nagai

Air quality in Nagai 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 Nagai

  • 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 Nagai?

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 Nagai

If you're planning outdoor activities in Nagai, 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.