Air Quality in Koganei, Japan

Drizzle
24.6°C · 77.1% humidity
24.6°
Feels 24.6°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
41 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
9 5pm
29
29
22 8pm
4
25
26 11pm
7
8
1 2am
1
0
0 5am
2
9
9 8am
29
29
29 11am
29
29
41 2pm
29
29
Station readings
11
35
CAMS model adj -25
34
54
54
54
34
54
54
34
34
27
27
25
25
27
34
34
54
54
54
54
54
66
54
54
AD 728×90

Air Quality Index Trend

40h · 1 stn

Koganei'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.

77.1%
Humidity
42.5 km/h
Wind ENE
1010.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.23 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Koganei?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.55.23 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (41 stations within 25 km)
5.23
Median
7.75
Average
1.9
Low
82.0
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +4.5

What is the 7-day forecast for Koganei?

09-05
27.4° 20.8°
19.19 mm
09-06
31.1° 23.4°
2.12 mm
09-07
31.0° 23.2°
2.06 mm
09-08
31.7° 22.8°
1.88 mm
09-09
27.7° 22.5°
8.75 mm
09-10
27.9° 24.2°
2.63 mm
09-11
31.8° 24.2°
0.19 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Koganei?

30
Honcho, Koganei, Tokyo, Japan (小金井市本町小金井市)
0.7 km PM2.5: 7.2 µg/m³
29
小金井市東町
1.3 km 82.5% RH PM2.5: 7.0 µg/m³ PM10: 9.0 µg/m³
17
西東京市南町
3.7 km 71.8% RH PM2.5: 4.0 µg/m³ PM10: 7.0 µg/m³
37
Nishitokyo (西東京市)
3.7 km PM2.5: 8.9 µg/m³
7
Ogawacho, Kodaira, Tokyo, Japan (小平市小川町小平市)
3.9 km PM2.5: 1.7 µg/m³
13
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
4.9 km PM2.5: 3.1 µg/m³
17
Jindaiji Minamimachi, Chofu, Tokyo, Japan (調布市深大寺南町調布市)
5.9 km PM2.5: 4.1 µg/m³
9
Jindaiji Minamimachi, Chofu, Tokyo, Japan (調布市深大寺南町調布市)
5.9 km PM2.5: 2.2 µg/m³
9
Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)
6.7 km PM2.5: 2.2 µg/m³
17
府中市四谷
7.3 km 75.5% RH PM2.5: 4.0 µg/m³ PM10: 8.0 µg/m³

What cities are near Koganei?

23 Kokubunji 21 Kodaira 29 Nishi-Tokyo-shi 23 Fuchū 25 Kamirenjaku 28 Tanashichō 26 Musashino 28 Chōfu 29 Higashikurume 28 Inokashira
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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 2026-09-05T11:15 UTC.