Air Quality in Kokubunji, Japan

Partly Cloudy
26.4°C · 68.1% humidity
26.4°
Feels 26.4°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
8 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
1 6am
1
21
24 9am
21
21
21 12pm
21
21
21 3pm
21
21
21 6pm
21
21
21 9pm
21
21
21 12am
21
21
21 3am
21
21
Station readings
17
CAMS model adj -33
34
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

19h · 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.

68.1%
Humidity
24.7 km/h
Wind E
1009.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
24
5.73 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Kokubunji?

Temperature & Precipitation

PM2.5 Trend

19h · 1 station
PM2.55.73 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (8 stations within 25 km)
5.73
Median
6.95
Average
2.4
Low
14.0
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +1.6

What is the 7-day forecast for Kokubunji?

08-03
28.2° 22.4°
9.5 mm
08-04
34.2° 25.8°
4.56 mm
08-05
32.3° 25.5°
1.81 mm
08-06
30.1° 26.8°
21.13 mm
08-07
36.2° 25.2°
11.69 mm
08-08
34.3° 26.5°
37.0 mm
08-09
35.6° 22.7°
1.25 mm
Both models agree Avg diff: 2.8°C

Where are air quality stations near Kokubunji?

21
小金井市東町
4.5 km 79.5% RH PM2.5: 5.0 µg/m³ PM10: 17.0 µg/m³
26
Izumicho, Tachikawa, Tokyo, Japan (立川市泉町立川市)
5.0 km PM2.5: 6.2 µg/m³
33
府中市四谷
5.1 km 83.9% RH PM2.5: 8.0 µg/m³ PM10: 13.0 µg/m³
15
Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)
5.3 km PM2.5: 3.6 µg/m³
59
Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)
5.3 km PM2.5: 15.9 µg/m³
25
Nishitokyo (西東京市)
6.2 km PM2.5: 6.0 µg/m³
17
西東京市南町
6.4 km 83.8% RH PM2.5: 4.0 µg/m³ PM10: 19.0 µg/m³
21
Jindaiji Minamimachi, Chofu, Tokyo, Japan (調布市深大寺南町調布市)
8.6 km PM2.5: 5.0 µg/m³
21
Jindaiji Minamimachi, Chofu, Tokyo, Japan (調布市深大寺南町調布市)
8.6 km PM2.5: 5.0 µg/m³
17
Shimohoya, Nishitokyo, Tokyo, Japan (西東京市下保谷西東京市)
9.2 km PM2.5: 4.1 µg/m³

What cities are near Kokubunji?

25 Kodaira 22 Fuchū 25 Koganei 20 Kunitachi 24 Tachikawa 25 Higashimurayama 21 Nishi-Tokyo-shi 26 Musashimurayama 21 Tanashichō 23 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 2026-08-08T00:58 UTC.