Air Quality in Unzen, Japan

Rain
19.7°C · 96.3% humidity
19.7°
Feels 19.7°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
66 6am
66
66
38 9am
51
60
66 12pm
71
75
60 3pm
62
63
64 6pm
64
65
65 9pm
65
66
66 12am
66
66
66 3am
66
66
AD 728×90

Air Quality Index Trend

47h · 30 stn

Unzen'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 Unzen is 1.8× the WHO annual guideline of 5 µg/m³.

96.3%
Humidity
50.5 km/h
Wind SE
1005.0 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
38
9.13 µg/m³
PM10▲
60
73.05 µg/m³
050100150200300500

What is the weather forecast for Unzen?

Temperature & Precipitation

PM2.5 Trend

47h · 30 stations
PM2.59.13 µg/m³ ✓ WHO
Good
PM1073.05 µg/m³
Moderate
UV INDEX9.4
Very High
AD 300×250
Station readings (3 stations within 25 km)
9.13
Median
10.3
Average
8.9
Low
11.0
High
PM2.5 µg/m³ · Model: 23.15 · Bias: +14.0

What is the 7-day forecast for Unzen?

05-29
20.4° 19.1°
3.75 mm
05-30
21.5° 18.6°
0.25 mm
05-31
23.0° 19.7°
06-01
25.0° 18.6°
1.69 mm
06-02
23.4° 20.6°
0.06 mm
06-03
23.7° 17.8°
27.12 mm
06-04
24.3° 19.1°
62.38 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Unzen?

39
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
5.6 km PM2.5: 9.4 µg/m³
27
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
5.6 km PM2.5: 6.5 µg/m³
29
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
5.6 km PM2.5: 7.0 µg/m³
35
Shindenmachi, Shimabara, Nagasaki, Japan (島原大気測定局島原市)
12.0 km PM2.5: 8.4 µg/m³
53
Mawatarimachi, Isahaya, Nagasaki, Japan (諫早諌早市)
22.4 km PM2.5: 13.1 µg/m³
38
Mawatarimachi, Isahaya, Nagasaki, Japan (諫早諌早市)
22.4 km PM2.5: 9.1 µg/m³
5
Kawanobori, Arao-shi, Kumamoto-ken, Japan (荒尾運動公園荒尾市)
31.0 km PM2.5: 1.2 µg/m³
9
Kawanobori, Arao-shi, Kumamoto-ken, Japan (荒尾運動公園荒尾市)
31.0 km PM2.5: 2.2 µg/m³

What cities are near Unzen?

34 Minamishimabara 36 Shimabara 46 Isahaya 40 Nagasu 28 Ōyanomachi-noboritate 42 Arao 52 Ōmura 32 Nagasaki 41 Obita 46 Ōmuta
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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.