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Hayama (Kanagawa) (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

Cloudy
16°C
Cloudy
Humidity
73.7%
Wind
9 m/s
Pressure
1016.9 hPa
Direction
207°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
16° / 19°
Precip.
19.9mm
Max wind
16.5 m/s

Hourly Forecast

09.04
Now
Weather
16°
9
09.04
12:00
Weather
16°
9
09.04
13:00
Weather
16°
9
09.04
14:00
Weather
16°
9
09.04
15:00
Weather
16°
9
09.04
16:00
Weather
16°
0.2
8
09.04
17:00
Weather
16°
0.4
8
09.04
18:00
Weather
16°
0.2
11
09.04
19:00
Weather
16°
0.4
11
09.04
20:00
Weather
16°
0.4
11
09.04
21:00
Weather
16°
0.5
11
09.04
22:00
Weather
17°
0.3
12
09.04
23:00
Weather
17°
0.7
12
10.04
00:00
Weather
18°
1.2
13
10.04
01:00
Weather
18°
1.3
13
10.04
02:00
Weather
18°
1.3
11
10.04
03:00
Weather
18°
1.3
11
10.04
04:00
Weather
17°
1.4
11
10.04
05:00
Weather
18°
1.7
13
10.04
06:00
Weather
18°
1.1
14
10.04
07:00
Weather
19°
0.9
16
10.04
08:00
Weather
19°
1.2
16
10.04
09:00
Weather
19°
1.6
17
10.04
10:00
Weather
19°
3.8
15

Temperature

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

Precipitation

3.8mm
0mm
16:00
0.2mm
17:00
0.4mm
18:00
0.2mm
19:00
0.4mm
20:00
0.4mm
21:00
0.5mm
22:00
0.3mm
23:00
0.7mm
00:00
1.2mm
01:00
1.3mm
02:00
1.3mm
03:00
1.3mm
04:00
1.4mm
05:00
1.7mm
06:00
1.1mm
07:00
0.9mm
08:00
1.2mm
09:00
1.6mm
10:00
3.8mm
11:00 22:00 10:00

Wind

16.5m/s
0m/s
11:00
8.9 m/s
12:00
9 m/s
13:00
9.1 m/s
14:00
9 m/s
15:00
8.6 m/s
16:00
7.6 m/s
17:00
8.3 m/s
18:00
10.6 m/s
19:00
11 m/s
20:00
11.4 m/s
21:00
10.9 m/s
22:00
11.5 m/s
23:00
11.7 m/s
00:00
12.6 m/s
01:00
12.9 m/s
02:00
10.9 m/s
03:00
10.7 m/s
04:00
11.1 m/s
05:00
12.8 m/s
06:00
14.1 m/s
07:00
15.6 m/s
08:00
15.9 m/s
09:00
16.5 m/s
10:00
15.3 m/s
11:00 22:00 10:00

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
19.4 km
107
35.7%

Measurement time: 2026-04-09 12:00

Calculated from PM2.5/PM10

PM2.5
19.4 km
38 µg/m3
45.2%

Measurement time: 2026-04-09 12:00

source: Aqicn

O3
19.4 km
48.1 µg/m3
30.1%

Measurement time: 2026-04-09 12:00

source: Aqicn

PM10
19.4 km
12 µg/m3
8.6%

Measurement time: 2026-04-09 12:00

source: Aqicn

NO2
19.4 km
8.4 µg/m3
4.2%

Measurement time: 2026-04-09 12:00

source: Aqicn

SO2
19.4 km
1.5 µg/m3
0.4%

Measurement time: 2026-04-09 12:00

source: Aqicn

CO
29.3 km
0.0023 mg/m3
0%

Measurement time: 2026-04-09 12:00

source: Aqicn

Info


Country: Japan
Region: Kanagawa
Latitude: 35.27651
Longitude: 139.57733


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About Air Quality in Hayama

Air quality in Hayama 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 Hayama

  • 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 Hayama?

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 Hayama

If you're planning outdoor activities in Hayama, 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.