Air Quality in Kokubunji, Japan

Drizzle
24.6°C · 77.1% humidity
24.6°
Feels 24.6°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
48 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
29 4pm
9
29
26 7pm
29
9
29 10pm
29
9
9 1am
2
2
0 4am
0
2
9 7am
9
29
29 10am
29
29
29 1pm
41
29
Station readings
13
11
35
CAMS model adj -25
54
34
54
54
54
34
54
54
34
34
27
27
25
25
27
34
34
54
54
54
54
54
66
54
AD 728×90

Air Quality Index Trend

40h · 1 stn

Kokubunji'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▲
26
6.15 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Kokubunji?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.56.15 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (48 stations within 25 km)
6.15
Median
5.72
Average
1.4
Low
12.1
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +3.5

What is the 7-day forecast for Kokubunji?

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 Kokubunji?

30
Honcho, Koganei, Tokyo, Japan (小金井市本町小金井市)
2.5 km PM2.5: 7.2 µg/m³
7
Ogawacho, Kodaira, Tokyo, Japan (小平市小川町小平市)
2.6 km PM2.5: 1.7 µg/m³
29
小金井市東町
4.5 km 82.5% RH PM2.5: 7.0 µg/m³ PM10: 9.0 µg/m³
17
府中市四谷
5.1 km 75.5% RH PM2.5: 4.0 µg/m³ PM10: 8.0 µg/m³
9
Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)
5.3 km PM2.5: 2.2 µg/m³
37
Nishitokyo (西東京市)
6.2 km PM2.5: 8.9 µg/m³
17
西東京市南町
6.4 km 71.8% RH PM2.5: 4.0 µg/m³ PM10: 7.0 µg/m³
21
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
6.6 km PM2.5: 5.0 µg/m³
13
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
8.1 km PM2.5: 3.1 µg/m³
9
Jindaiji Minamimachi, Chofu, Tokyo, Japan (調布市深大寺南町調布市)
8.6 km PM2.5: 2.2 µg/m³

What cities are near Kokubunji?

26 Kodaira 24 Fuchū 29 Koganei 20 Kunitachi 23 Tachikawa 26 Higashimurayama 36 Nishi-Tokyo-shi 24 Musashimurayama 32 Tanashichō 26 Higashikurume
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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 2026-09-05T10:27 UTC.