Air Quality in Chōfu, Japan

Drizzle
23.7°C · 83.6% humidity
23.7°
Feels 23.7°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
48 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
132 6am
70
69
61 9am
63
66
67 12pm
68
68
69 3pm
69
68
69 6pm
69
69
69 9pm
69
70
70 12am
132
132
132 3am
70
70
Station readings
10
CAMS model adj -14
146
84
83
83
83
84
84
84
84
84
84
83
83
83
83
83
83
84
84
146
146
146
84
84
AD 728×90

Air Quality Index Trend

6h · 1 stn

Chōfu'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 Chōfu is 1.1× the WHO 24-hour guideline of 15 µg/m³.

83.6%
Humidity
54.5 km/h
Wind NNW
1002.6 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
61
16.72 µg/m³
PM10▲
63
79.9 µg/m³
050100150200300500

What is the weather forecast for Chōfu?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.516.72 µg/m³ ×1.1 WHO
Moderate
PM1079.9 µg/m³
Moderate
UV INDEX14.9
Extreme
AD 300×250
Station readings (48 stations within 25 km)
16.72
Median
15.74
Average
3.8
Low
29.2
High
PM2.5 µg/m³ · Model: 27.55 · Bias: +10.8

What is the 7-day forecast for Chōfu?

07-22
30.2° 23.7°
3.0 mm
07-23
27.8° 22.1°
0.56 mm
07-24
29.8° 23.6°
1.56 mm
07-25
32.9° 23.6°
07-26
30.3° 26.1°
0.13 mm
07-27
33.3° 24.9°
9.94 mm
07-28
29.6° 26.3°
12.63 mm
Both models agree Avg diff: 2.9°C

Where are air quality stations near Chōfu?

68
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
3.6 km PM2.5: 20.2 µg/m³
55
小金井市東町
4.7 km 78.5% RH PM2.5: 14.0 µg/m³ PM10: 29.0 µg/m³
70
多摩区登戸小学校
4.7 km 78.0% RH PM2.5: 21.0 µg/m³ PM10: 30.0 µg/m³
80
Sekimae, Musashino, Tokyo, Japan (武蔵野市関前武蔵野市)
5.8 km PM2.5: 25.9 µg/m³
39
Shukugawara, Kanagawa, Japan (本村橋川崎市多摩区)
6.0 km PM2.5: 9.4 µg/m³
61
西東京市南町
7.0 km 79.2% RH PM2.5: 17.0 µg/m³ PM10: 33.0 µg/m³
43
Higashiyurigaoka, Kanagawa, Japan (弘法松公園川崎市麻生区)
7.2 km PM2.5: 10.3 µg/m³
9
Katahira, Kanagawa, Japan (柿生川崎市麻生区)
9.0 km PM2.5: 2.2 µg/m³
7
Katahira, Kanagawa, Japan (柿生川崎市麻生区)
9.0 km PM2.5: 1.7 µg/m³
84
Suginami, Izumi-3
9.2 km PM2.5: 27.6 µg/m³ PM10: 31.5 µg/m³

What cities are near Chōfu?

65 Komae 62 Kamirenjaku 69 Noborito 60 Inokashira 60 Inagi 63 Musashino 58 Koganei 60 Fuchū 62 Nishi-Tokyo-shi 57 Tama
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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 2026-07-22T00:21 UTC.