Air Quality in Yoichi, Japan
Windy
19.0°C · 83.2% humidity
19.0°
Feels 19.0°
64
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Yoichi's air quality — share it
AQI Forecast
54
5pm
54
54
64
8pm
61
59
58
11pm
57
56
55
2am
67
67
54
5am
54
54
54
8am
54
54
54
11am
54
54
54
2pm
54
54
Air Quality Index Trend
42h · 1 stnYoichi's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions. Current PM2.5 concentration in Yoichi is 1.2× the WHO 24-hour guideline of 15 µg/m³.
83.2%
Humidity
64.2 km/h
Wind SSW
1012.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
18.05 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Yoichi?
Temperature & Precipitation
PM2.5 Trend
42h · 1 stationPM2.518.05 µg/m³
×1.2 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
18.05
Median
18.05
Average
15.9
Low
20.2
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -7.2
What is the 7-day forecast for Yoichi?
09-05
24.0° 17.3°
0.06 mm
09-06
21.6° 18.3°
09-07
23.0° 17.8°
0.56 mm
09-08
23.7° 15.6°
1.81 mm
09-09
22.0° 19.6°
1.31 mm
09-10
25.1° 18.6°
0.75 mm
09-11
21.3° 17.2°
10.13 mm
Both models agree
Avg diff: 2.4°C
Where are air quality stations near Yoichi?
61
Katsunaichō, Otaru-shi, Hokkaidō, Japan (勝納小樽市)
59
Katsunaichō, Otaru-shi, Hokkaidō, Japan (勝納小樽市)
What cities are near Yoichi?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T11:14 UTC.