Air Quality in Koganei, Japan

Cloudy
21.5°C · 71.7% humidity
21.5°
Feels 21.5°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
52 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
38 8am
38
21
10 11am
13
15
17 2pm
18
19
20 5pm
37
38
38 8pm
38
39
39 11pm
39
101
39 2am
39
38
21 5am
21
9
Station readings
4
4
CAMS model adj -45
83
83
66
66
66
66
66
66
66
66
83
84
84
83
84
84
84
146
84
84
83
66
66
54
AD 728×90

Air Quality Index Trend

37h · 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.

71.7%
Humidity
29.8 km/h
Wind S
1015.4 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
10
2.3 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Koganei?

Temperature & Precipitation

PM2.5 Trend

37h · 1 station
PM2.52.3 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (52 stations within 25 km)
2.3
Median
4.49
Average
0.94
Low
11.0
High
PM2.5 µg/m³ · Model: 13.7 · Bias: +11.4

What is the 7-day forecast for Koganei?

06-09
23.3° 21.5°
0.13 mm
06-10
28.6° 19.0°
3.81 mm
06-11
26.3° 19.7°
0.38 mm
06-12
24.3° 19.6°
1.0 mm
06-13
30.7° 21.4°
3.69 mm
06-14
29.7° 18.3°
39.69 mm
06-15
27.2° 21.0°
12.0 mm
Both models agree Avg diff: 2.3°C

Where are air quality stations near Koganei?

4
小金井市東町
1.3 km 97.0% RH PM2.5: 1.0 µg/m³ PM10: 4.0 µg/m³
12
西東京市南町
3.7 km 96.6% RH PM2.5: 3.0 µg/m³ PM10: 5.0 µg/m³
42
Ogawacho, Kodaira, Tokyo, Japan (小平市小川町小平市)
3.9 km PM2.5: 10.1 µg/m³
69
Sekimae, Musashino, Tokyo, Japan (武蔵野市関前武蔵野市)
4.4 km PM2.5: 20.7 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
25
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
5.6 km PM2.5: 6.0 µg/m³
3
Yaho, Kunitachi, Tokyo, Japan (甲州街道国立国立市)
7.2 km PM2.5: 0.7 µg/m³
12
府中市四谷
7.3 km 93.0% RH PM2.5: 3.0 µg/m³ PM10: 4.0 µg/m³
10
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
8.6 km PM2.5: 2.4 µg/m³
38
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
8.6 km PM2.5: 9.1 µg/m³

What cities are near Koganei?

13 Kokubunji 16 Kodaira 30 Nishi-Tokyo-shi 14 Fuchū 15 Kamirenjaku 26 Tanashichō 17 Musashino 10 Chōfu 21 Higashikurume 20 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 2026-06-09T02:44 UTC.