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Hannō (Saitama) (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
-2°C
Clear sky
Humidity
63.2%
Wind
2 m/s
Pressure
1016.8 hPa
Direction
272°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-3° / 8°
Precip.
0.7mm
Max wind
4.1 m/s

Hourly Forecast

01.02
Now
Weather
-2°
01.02
21:00
Weather
-2°
01.02
22:00
Weather
-2°
01.02
23:00
Weather
02.02
00:00
Weather
02.02
01:00
Weather
02.02
02:00
Weather
02.02
03:00
Weather
02.02
04:00
Weather
02.02
05:00
Weather
02.02
06:00
Weather
02.02
07:00
Weather
0.2
02.02
08:00
Weather
0.3
02.02
09:00
Weather
0.2
02.02
10:00
Weather
02.02
11:00
Weather
02.02
12:00
Weather
-0°
02.02
13:00
Weather
-1°
02.02
14:00
Weather
-2°
02.02
15:00
Weather
-3°
02.02
16:00
Weather
-3°
02.02
17:00
Weather
-3°
02.02
18:00
Weather
-3°
02.02
19:00
Weather
-2°

Temperature

8°C
-3°C
20:00
-2°C
21:00
-2°C
22:00
-2°C
23:00
2°C
00:00
5°C
01:00
6°C
02:00
7°C
03:00
8°C
04:00
8°C
05:00
8°C
06:00
7°C
07:00
6°C
08:00
4°C
09:00
3°C
10:00
2°C
11:00
2°C
12:00
-0°C
13:00
-1°C
14:00
-2°C
15:00
-3°C
16:00
-3°C
17:00
-3°C
18:00
-3°C
19:00
-2°C
20:00 07:00 19:00

Precipitation

0.3mm
0mm
07:00
0.2mm
08:00
0.3mm
09:00
0.2mm
20:00 07:00 19:00

Wind

4.1m/s
0m/s
20:00
1.6 m/s
21:00
1.7 m/s
22:00
1.7 m/s
23:00
1.7 m/s
00:00
1.5 m/s
01:00
2.1 m/s
02:00
2.2 m/s
03:00
2.5 m/s
04:00
3.1 m/s
05:00
2.6 m/s
06:00
2 m/s
07:00
2.3 m/s
08:00
4.1 m/s
09:00
4.1 m/s
10:00
3.1 m/s
11:00
2.1 m/s
12:00
1.9 m/s
13:00
2.1 m/s
14:00
1.9 m/s
15:00
2.1 m/s
16:00
2 m/s
17:00
2.1 m/s
18:00
2.6 m/s
19:00
3.2 m/s
20:00 07:00 19:00

Radiation

0.06 uSv
43.4 km
7.5%

Measurement time: 2026-02-01 18:00

source: remap_europe

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
53.5 km
11
3.7%

Measurement time: 2026-02-01 20:42

Calculated from PM2.5/PM10

O3
53.5 km
66.13 µg/m3
41.3%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

NO2
53.5 km
6.78 µg/m3
3.4%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

PM2.5
53.5 km
2.85 µg/m3
3.4%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

PM10
53.5 km
3.24 µg/m3
2.3%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

CO
53.5 km
0.21805 mg/m3
1.6%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

SO2
53.5 km
2.76 µg/m3
0.8%

Measurement time: 2026-02-01 20:42

source: OpenWeatherMap

Info


Country: Japan
Region: Saitama
Latitude: 35.85194
Longitude: 139.31806


Solar Energy

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0 W/m²
Solar Radiation
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About Air Quality in Hannō

Air quality in Hannō 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 Hannō

  • 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 Hannō?

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 Hannō

If you're planning outdoor activities in Hannō, 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.