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
AD 728×90

Air Quality Index Trend

47h · 7 stn

Hiji'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
35
8.33 µg/m³
PM10▲
44
48.05 µg/m³
050100150200300500

What is the weather forecast for Hiji?

Temperature & Precipitation

PM2.5 Trend

47h · 7 stations
PM2.58.33 µg/m³ ✓ WHO
Good
PM1048.05 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
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)
10.2 km PM2.5: 6.5 µg/m³
18
Oita (大分)
16.3 km PM2.5: 4.3 µg/m³
19
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
20.5 km PM2.5: 4.6 µg/m³
34
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
20.5 km PM2.5: 8.2 µg/m³
53
Yokota, Oita, Oita Prefecture, Japan (大在小学校大分市)
22.2 km PM2.5: 13.1 µg/m³
36
Shōnaichō Kakiharu, Yufu-shi, Ōita-ken, Japan (中部保健所由布保健部由布市)
23.4 km PM2.5: 8.6 µg/m³
42
Nakahetsugi, Oita, Oita Prefecture, Japan (戸次中学校大分市)
27.5 km PM2.5: 10.1 µg/m³
21
Kunisakimachi Tsurugawa, Kunisaki-shi, Ōita-ken, Japan (国東高等学校国東市)
28.0 km PM2.5: 5.0 µg/m³

What cities are near Hiji?

38 Kitsuki 38 Beppu 38 Ōita 37 Tsurusaki 26 Bungo-Takada-shi 17 Yufu 28 Yokkaichi 40 Kunisaki 46 Tsukawaki 30 Usuki
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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.