Air Quality in Kokubunji, Japan

Windy
23.1°C · 64.2% humidity
23.1°
Feels 23.1°
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
52 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
38 9am
21
21
13 12pm
15
17
18 3pm
19
19
37 6pm
38
38
38 9pm
39
39
39 12am
101
39
39 3am
38
21
21 6am
9
9
Station readings
4
4
CAMS model adj -45
83
66
66
66
66
66
66
66
66
83
84
84
83
84
84
84
146
84
84
83
66
66
54
54
AD 728×90

Air Quality Index Trend

36h · 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
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
13
3.24 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Kokubunji?

Temperature & Precipitation

PM2.5 Trend

36h · 1 station
PM2.53.24 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (52 stations within 25 km)
3.24
Median
4.4
Average
0.94
Low
11.0
High
PM2.5 µg/m³ · Model: 12.85 · Bias: +9.6

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: 2.3°C

Where are air quality stations near Kokubunji?

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

What cities are near Kokubunji?

16 Kodaira 14 Fuchū 10 Koganei 15 Kunitachi 17 Tachikawa 18 Higashimurayama 30 Nishi-Tokyo-shi 18 Musashimurayama 26 Tanashichō 21 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 2026-06-09T03:04 UTC.