Air Quality in Kokubunji, Japan

Windy
23.1°C · 64.2% humidity
23.1°
Feels 23.1°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
57 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
25 1pm
25
25
28 4pm
25
42
43 7pm
43
42
43 10pm
43
43
105 1am
43
43
42 4am
25
25
13 7am
13
13
13 10am
13
13
Station readings
5
23
53
61
CAMS model adj -41
66
66
66
66
66
83
84
84
83
84
84
84
146
84
84
83
66
66
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

37h · 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.

64.2%
Humidity
59.3 km/h
Wind S
1014.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
28
6.73 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Kokubunji?

Temperature & Precipitation

PM2.5 Trend

37h · 1 station
PM2.56.73 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (57 stations within 25 km)
6.73
Median
6.9
Average
4.0
Low
11.84
High
PM2.5 µg/m³ · Model: 13.7 · Bias: +7.0

What is the 7-day forecast for Kokubunji?

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: 2.1°C

Where are air quality stations near Kokubunji?

38
Ogawacho, Kodaira, Tokyo, Japan (小平市小川町小平市)
2.6 km PM2.5: 9.1 µg/m³
25
Yaho, Kunitachi, Tokyo, Japan (甲州街道国立国立市)
4.5 km PM2.5: 6.0 µg/m³
25
小金井市東町
4.5 km 87.8% RH PM2.5: 6.0 µg/m³ PM10: 9.0 µg/m³
29
府中市四谷
5.1 km 82.0% RH PM2.5: 7.0 µg/m³ PM10: 9.0 µg/m³
21
西東京市南町
6.4 km 77.1% RH PM2.5: 5.0 µg/m³ PM10: 9.0 µg/m³
46
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
6.6 km PM2.5: 11.0 µg/m³
13
Ochikawa, Hino, Tokyo, Japan (川崎街道百草園日野市)
6.6 km PM2.5: 3.1 µg/m³
42
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
6.6 km PM2.5: 10.1 µg/m³
34
Sekimae, Musashino, Tokyo, Japan (武蔵野市関前武蔵野市)
7.5 km PM2.5: 8.2 µg/m³
17
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
8.1 km PM2.5: 4.1 µg/m³

What cities are near Kokubunji?

25 Kodaira 28 Fuchū 27 Koganei 30 Kunitachi 30 Tachikawa 29 Higashimurayama 39 Nishi-Tokyo-shi 28 Musashimurayama 36 Tanashichō 33 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 2026-06-09T07:29 UTC.