Air Quality in Usuki, Japan

Rain
17.9°C · 98.4% humidity
17.9°
Feels 17.9°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast
34 6am
34
34
30 9am
49
54
57 12pm
60
61
63 3pm
52
52
53 6pm
53
53
54 9pm
54
34
34 12am
34
34
34 3am
34
34
AD 728×90

Air Quality Index Trend

47h · 6 stn

Usuki'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 Usuki is 1.5× the WHO annual guideline of 5 µg/m³.

98.4%
Humidity
0.9 km/h
Wind SW
1003.4 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
30
7.26 µg/m³
PM10▲
56
66.15 µg/m³
050100150200300500

What is the weather forecast for Usuki?

Temperature & Precipitation

PM2.5 Trend

47h · 6 stations
PM2.57.26 µg/m³ ✓ WHO
Good
PM1066.15 µg/m³
Moderate
UV INDEX10.9
Extreme
AD 300×250
Station readings (4 stations within 25 km)
7.26
Median
7.27
Average
4.1
Low
9.1
High
PM2.5 µg/m³ · Model: 20.3 · Bias: +13.0

What is the 7-day forecast for Usuki?

05-29
18.1° 17.3°
8.5 mm
05-30
20.0° 16.2°
4.0 mm
05-31
23.9° 17.6°
0.19 mm
06-01
26.0° 17.2°
0.88 mm
06-02
19.0° 17.1°
1.94 mm
06-03
24.1° 15.0°
12.94 mm
06-04
23.3° 15.5°
2.81 mm
Both models agree Avg diff: 2.9°C

Where are air quality stations near Usuki?

42
Nakahetsugi, Oita, Oita Prefecture, Japan (戸次中学校大分市)
14.0 km PM2.5: 10.1 µg/m³
21
Saganoseki, Oita, Oita Prefecture, Japan (佐賀関大分市)
15.5 km PM2.5: 5.0 µg/m³
53
Yokota, Oita, Oita Prefecture, Japan (大在小学校大分市)
15.9 km PM2.5: 13.1 µg/m³
9
Nagashimamachi, Saeki, Oita Prefecture, Japan (南部振興局佐伯市)
20.0 km PM2.5: 2.2 µg/m³
18
Oita (大分)
22.3 km PM2.5: 4.3 µg/m³
19
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
25.4 km PM2.5: 4.6 µg/m³
34
Yokose, Oita, Oita Prefecture, Japan (西部清掃事業所大分市)
25.4 km PM2.5: 8.2 µg/m³
39
Miemachi Ichiba, Bungoono, Oita Prefecture, Japan (豊肥保健所豊後大野市)
26.5 km PM2.5: 9.4 µg/m³
57
Miemachi Ichiba, Bungoono, Oita Prefecture, Japan (豊肥保健所豊後大野市)
26.5 km PM2.5: 15.0 µg/m³

What cities are near Usuki?

27 Tsukumiura 37 Tsurusaki 26 Saiki 38 Ōita 24 Mie 38 Beppu 38 Kitsuki 35 Hiji 17 Yufu 20 Takedamachi
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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.