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Iwanai (Hokkaido) (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

Partly cloudy
6°C
Partly cloudy
Humidity
52%
Wind
5 m/s
Pressure
1008.6 hPa
Direction
177°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-0° / 6°
Precip.
15.1mm
Max wind
18 m/s

Hourly Forecast

20.03
Now
Weather
5
20.03
06:00
Weather
6
20.03
07:00
Weather
7
20.03
08:00
Weather
0.8
8
20.03
09:00
Weather
1.5
5
20.03
10:00
Weather
1.6
7
20.03
11:00
Weather
1.7
7
20.03
12:00
Weather
1.3
6
20.03
13:00
Weather
0.8
7
20.03
14:00
Weather
2
5
20.03
15:00
Weather
2.5
20.03
16:00
Weather
1.2
18
20.03
17:00
Weather
0.3
16
20.03
18:00
Weather
0.5
15
20.03
19:00
Weather
0.4
15
20.03
20:00
Weather
0.4
15
20.03
21:00
Weather
-0°
15
20.03
22:00
Weather
15
20.03
23:00
Weather
15
21.03
00:00
Weather
14
21.03
01:00
Weather
0.1
13
21.03
02:00
Weather
12
21.03
03:00
Weather
11
21.03
04:00
Weather
11

Temperature

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

Precipitation

2.5mm
0mm
08:00
0.8mm
09:00
1.5mm
10:00
1.6mm
11:00
1.7mm
12:00
1.3mm
13:00
0.8mm
14:00
2mm
15:00
2.5mm
16:00
1.2mm
17:00
0.3mm
18:00
0.5mm
19:00
0.4mm
20:00
0.4mm
01:00
0.1mm
05:00 16:00 04:00

Wind

18m/s
0m/s
05:00
5.3 m/s
06:00
6 m/s
07:00
7.2 m/s
08:00
7.8 m/s
09:00
5.1 m/s
10:00
7.1 m/s
11:00
7.1 m/s
12:00
6 m/s
13:00
6.9 m/s
14:00
5.2 m/s
15:00
4.7 m/s
16:00
18 m/s
17:00
15.7 m/s
18:00
14.5 m/s
19:00
15.4 m/s
20:00
15.2 m/s
21:00
15 m/s
22:00
14.9 m/s
23:00
14.7 m/s
00:00
13.5 m/s
01:00
12.8 m/s
02:00
11.7 m/s
03:00
11.1 m/s
04:00
10.5 m/s
05:00 16:00 04:00

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
69.4 km
152
50.7%

Measurement time: 2026-03-20 05:00

Calculated from PM2.5/PM10

PM2.5
69.4 km
59 µg/m3
70.2%

Measurement time: 2026-03-20 05:00

source: Aqicn

O3
69.4 km
34.4 µg/m3
21.5%

Measurement time: 2026-03-20 05:00

source: Aqicn

PM10
69.4 km
16 µg/m3
11.4%

Measurement time: 2026-03-20 05:00

source: Aqicn

NO2
69.4 km
5.6 µg/m3
2.8%

Measurement time: 2026-03-20 05:00

source: Aqicn

SO2
69.4 km
1.5 µg/m3
0.4%

Measurement time: 2026-03-20 05:00

source: Aqicn

CO
69.4 km
0.0034 mg/m3
0%

Measurement time: 2026-03-20 05:00

source: Aqicn

Info


Country: Japan
Region: Hokkaido
Latitude: 42.97444
Longitude: 140.50889


Solar Energy

Low
216.1 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Iwanai

About Air Quality in Iwanai

Air quality in Iwanai 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 Iwanai

  • 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 Iwanai?

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 Iwanai

If you're planning outdoor activities in Iwanai, 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.