Air Quality in Koganei, Japan

Partly Cloudy
24.9°C · 69.1% humidity
24.9°
Feels 24.9°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
36 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
9 9pm
0
0
23 12am
19
13
10 3am
7
5
4 6am
3
2
1 9am
10
10
0 12pm
0
0
0 3pm
0
0
0 6pm
0
0
Station readings
7
9
1
CAMS model adj -57
66
54
54
54
54
34
34
34
34
54
54
54
54
66
66
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

23h · 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. Current PM2.5 concentration in Koganei is 1.1× the WHO annual guideline of 5 µg/m³.

69.1%
Humidity
19.9 km/h
Wind NNE
1003.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
23
5.54 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Koganei?

Temperature & Precipitation

PM2.5 Trend

23h · 1 station
PM2.55.54 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (36 stations within 25 km)
5.54
Median
6.75
Average
1.39
Low
14.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +4.5

What is the 7-day forecast for Koganei?

05-29
24.9° 19.9°
0.06 mm
05-30
24.8° 19.7°
0.44 mm
05-31
27.1° 20.3°
06-01
28.2° 21.4°
06-02
27.4° 20.8°
0.06 mm
06-03
28.1° 23.1°
0.06 mm
06-04
26.5° 18.8°
Both models agree Avg diff: 3.1°C

Where are air quality stations near Koganei?

25
小金井市東町
1.3 km 29.3% RH PM2.5: 6.0 µg/m³ PM10: 10.0 µg/m³
12
西東京市南町
3.7 km 33.6% RH PM2.5: 3.0 µg/m³ PM10: 6.0 µg/m³
16
Ogawacho, Kodaira, Tokyo, Japan (小平市小川町小平市)
3.9 km PM2.5: 3.8 µg/m³
52
Sekimae, Musashino, Tokyo, Japan (武蔵野市関前武蔵野市)
4.4 km PM2.5: 12.6 µg/m³
63
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
4.9 km PM2.5: 17.8 µg/m³
58
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
5.6 km PM2.5: 15.4 µg/m³
31
Yaho, Kunitachi, Tokyo, Japan (甲州街道国立国立市)
7.2 km PM2.5: 7.4 µg/m³
12
府中市四谷
7.3 km 33.1% RH PM2.5: 3.0 µg/m³ PM10: 9.0 µg/m³
44
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
8.6 km PM2.5: 10.6 µg/m³
25
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
8.6 km PM2.5: 6.0 µg/m³

What cities are near Koganei?

23 Kokubunji 22 Kodaira 13 Nishi-Tokyo-shi 23 Fuchū 22 Kamirenjaku 15 Tanashichō 20 Musashino 23 Chōfu 21 Higashikurume 22 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 2026-05-29T15:01 UTC.