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Kōya (Wakayama) (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

مطر
10°C
مطر
Humidity
88.8%
Wind
6 m/s
Pressure
1015.1 hPa
Direction
169°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
10° / 17°
Precip.
30.3mm
Max wind
9.9 m/s

Hourly Forecast

09.04
Now
Weather
10°
0.4
6
09.04
10:00
Weather
10°
0.4
7
09.04
11:00
Weather
10°
0.6
7
09.04
12:00
Weather
10°
0.7
7
09.04
13:00
Weather
11°
1.3
8
09.04
14:00
Weather
11°
0.3
9
09.04
15:00
Weather
11°
9
09.04
16:00
Weather
11°
3.8
9
09.04
17:00
Weather
11°
2
10
09.04
18:00
Weather
11°
0.9
10
09.04
19:00
Weather
12°
1.7
8
09.04
20:00
Weather
12°
3.7
8
09.04
21:00
Weather
12°
0.9
8
09.04
22:00
Weather
13°
1.1
8
09.04
23:00
Weather
14°
1.5
8
10.04
00:00
Weather
15°
1.8
9
10.04
01:00
Weather
16°
1.5
9
10.04
02:00
Weather
17°
1
9
10.04
03:00
Weather
17°
0.6
10
10.04
04:00
Weather
17°
1.6
9
10.04
05:00
Weather
17°
1.9
10
10.04
06:00
Weather
17°
1.2
9
10.04
07:00
Weather
17°
0.9
10
10.04
08:00
Weather
17°
0.5
9

Temperature

17°C
10°C
09:00
10°C
10:00
10°C
11:00
10°C
12:00
10°C
13:00
11°C
14:00
11°C
15:00
11°C
16:00
11°C
17:00
11°C
18:00
11°C
19:00
12°C
20:00
12°C
21:00
12°C
22:00
13°C
23:00
14°C
00:00
15°C
01:00
16°C
02:00
17°C
03:00
17°C
04:00
17°C
05:00
17°C
06:00
17°C
07:00
17°C
08:00
17°C
09:00 20:00 08:00

Precipitation

3.8mm
0mm
09:00
0.4mm
10:00
0.4mm
11:00
0.6mm
12:00
0.7mm
13:00
1.3mm
14:00
0.3mm
16:00
3.8mm
17:00
2mm
18:00
0.9mm
19:00
1.7mm
20:00
3.7mm
21:00
0.9mm
22:00
1.1mm
23:00
1.5mm
00:00
1.8mm
01:00
1.5mm
02:00
1mm
03:00
0.6mm
04:00
1.6mm
05:00
1.9mm
06:00
1.2mm
07:00
0.9mm
08:00
0.5mm
09:00 20:00 08:00

Wind

9.9m/s
0m/s
09:00
6.2 m/s
10:00
7.2 m/s
11:00
7.4 m/s
12:00
7.3 m/s
13:00
7.9 m/s
14:00
9 m/s
15:00
9.1 m/s
16:00
9.2 m/s
17:00
9.8 m/s
18:00
9.7 m/s
19:00
8.3 m/s
20:00
7.8 m/s
21:00
7.9 m/s
22:00
7.6 m/s
23:00
8 m/s
00:00
8.7 m/s
01:00
9.2 m/s
02:00
9 m/s
03:00
9.9 m/s
04:00
9.2 m/s
05:00
9.7 m/s
06:00
9.1 m/s
07:00
9.5 m/s
08:00
8.5 m/s
09:00 20:00 08:00

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
65.9 km
158
52.7%

Measurement time: 2026-04-09 10:00

Calculated from PM2.5/PM10

PM2.5
65.9 km
70 µg/m3
83.3%

Measurement time: 2026-04-09 10:00

source: Aqicn

O3
65.9 km
43.2 µg/m3
27%

Measurement time: 2026-04-09 10:00

source: Aqicn

NO2
54.6 km
46.3 µg/m3
23.2%

Measurement time: 2026-04-09 11:00

source: Aqicn

PM10
54.6 km
21 µg/m3
15%

Measurement time: 2026-04-09 11:00

source: Aqicn

SO2
54.6 km
8.6 µg/m3
2.5%

Measurement time: 2026-04-09 11:00

source: Aqicn

CO
65.9 km
0.0023 mg/m3
0%

Measurement time: 2026-04-09 10:00

source: Aqicn

Info


Country: Japan
Region: Wakayama
Latitude: 34.21294
Longitude: 135.62244


Solar Energy

Night
0 W/m²
Solar Radiation
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About Air Quality in Kōya

Air quality in Kōya 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 Kōya

  • 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 Kōya?

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 Kōya

If you're planning outdoor activities in Kōya, 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.