Air Quality in Hiji, Japan
Rain
17.5°C · 96.1% humidity
17.5°
Feels 17.5°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations
Nearby Monitoring Stations
AQI Forecast
54
6am
54
54
35
9am
52
56
59
12pm
61
62
51
3pm
52
53
53
6pm
53
54
54
9pm
54
54
54
12am
54
54
54
3am
54
54
Air Quality Index Trend
47h · 7 stnHiji'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 Hiji is 1.7× the WHO annual guideline of 5 µg/m³.
96.1%
Humidity
35.2 km/h
Wind NE
1004.0 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
8.33 µg/m³
PM10▲
48.05 µg/m³
050100150200300500
What is the weather forecast for Hiji?
Temperature & Precipitation
PM2.5 Trend
47h · 7 stationsPM2.58.33 µg/m³
✓ WHO
Good
PM1048.05 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (4 stations within 25 km)
8.33
Median
7.32
Average
2.9
Low
9.1
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +8.0
What is the 7-day forecast for Hiji?
05-29
18.4° 17.3°
4.81 mm
05-30
20.8° 16.9°
3.19 mm
05-31
23.4° 18.1°
0.06 mm
06-01
26.8° 17.9°
0.13 mm
06-02
21.6° 16.9°
0.06 mm
06-03
23.6° 16.2°
14.13 mm
06-04
23.8° 15.9°
6.44 mm
Both models agree
Avg diff: 2.6°C
Where are air quality stations near Hiji?
27
Noguchihara, Beppu, Oita Prefecture, Japan (青山中学校別府市)
18
Oita (大分)
19
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
34
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
53
Yokota, Oita, Oita Prefecture, Japan (大在小学校大分市)
36
Shōnaichō Kakiharu, Yufu-shi, Ōita-ken, Japan (中部保健所由布保健部由布市)
42
Nakahetsugi, Oita, Oita Prefecture, Japan (戸次中学校大分市)
21
Kunisakimachi Tsurugawa, Kunisaki-shi, Ōita-ken, Japan (国東高等学校国東市)
What cities are near Hiji?
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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 2026-05-29T00:11 UTC.