Air Quality in Isahaya, Japan

Drizzle
20.3°C · 94.1% humidity
20.3°
Feels 20.3°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast
66 3am
66
66
35 6am
44
67
73 9am
75
77
62 12pm
63
64
64 3pm
65
65
65 6pm
54
54
54 9pm
54
54
54 12am
54
54
AD 728×90

Air Quality Index Trend

47h · 24 stn

Isahaya'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 Isahaya is 1.7× the WHO annual guideline of 5 µg/m³.

94.1%
Humidity
47.6 km/h
Wind ESE
1004.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
35
8.53 µg/m³
PM10▲
44
48.05 µg/m³
050100150200300500

What is the weather forecast for Isahaya?

Temperature & Precipitation

PM2.5 Trend

47h · 24 stations
PM2.58.53 µg/m³ ✓ WHO
Good
PM1048.05 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (8 stations within 25 km)
8.53
Median
7.88
Average
4.8
Low
11.0
High
PM2.5 µg/m³ · Model: 19.2 · Bias: +10.7

What is the 7-day forecast for Isahaya?

05-28
21.7° 15.1°
55.69 mm
05-29
21.2° 18.7°
1.5 mm
05-30
21.4° 18.4°
0.06 mm
05-31
23.8° 19.8°
06-01
26.8° 18.7°
1.88 mm
06-02
24.9° 20.9°
06-03
23.0° 17.2°
28.75 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Isahaya?

17
Mawatarimachi, Isahaya, Nagasaki, Japan (諫早諌早市)
1.8 km PM2.5: 4.1 µg/m³
34
Mawatarimachi, Isahaya, Nagasaki, Japan (諫早諌早市)
1.8 km PM2.5: 8.2 µg/m³
41
Nishisanjocho, Omura, Nagasaki, Japan (大村大気測定局大村市)
11.2 km PM2.5: 9.8 µg/m³
17
Yagamimachi, Nagasaki, Nagasaki, Japan (東長崎支所長崎市)
11.2 km PM2.5: 4.1 µg/m³
30
Yagamimachi, Nagasaki, Nagasaki, Japan (東長崎支所長崎市)
11.2 km PM2.5: 7.2 µg/m³
45
Nodago, Nagasaki, Japan (時津小学校大気測定局西彼杵郡時津町)
18.4 km PM2.5: 10.8 µg/m³
34
Nagasaki (長崎)
18.5 km PM2.5: 8.2 µg/m³
21
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
19.8 km PM2.5: 5.0 µg/m³
35
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
19.8 km PM2.5: 8.4 µg/m³
38
Obamacho Kitahonmachi, Unzen, Nagasaki, Japan (小浜大気測定局雲仙市)
19.8 km PM2.5: 9.1 µg/m³

What cities are near Isahaya?

23 Ōmura 27 Obita 26 Nagasaki 20 Togitsu 27 Unzen 26 Minamishimabara 41 Kashima 41 Ureshinomachi-shimojuku 32 Shimabara 23 Saikai
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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 2026-05-28T21:37 UTC.