Air Quality in Chōfu, Japan

Drizzle
23.7°C · 83.6% humidity
23.7°
Feels 23.7°
57
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
54 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
87 5am
149
87
57 8am
65
71
76 11am
79
82
83 2pm
84
85
85 5pm
85
85
85 8pm
86
86
87 11pm
87
149
149 2am
149
87
Station readings
10
CAMS model adj +3
84
146
84
83
83
83
84
84
84
84
84
84
83
83
83
83
83
83
84
84
146
146
146
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.

83.6%
Humidity
54.5 km/h
Wind NNW
1002.6 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
57
14.98 µg/m³
PM10▲
63
79.9 µg/m³
050100150200300500

What is the weather forecast for Chōfu?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.514.98 µg/m³ ✓ WHO
Moderate
PM1079.9 µg/m³
Moderate
UV INDEX4.4
Moderate
AD 300×250
Station readings (54 stations within 25 km)
14.98
Median
15.2
Average
0.5
Low
26.8
High
PM2.5 µg/m³ · Model: 27.55 · Bias: +12.6

What is the 7-day forecast for Chōfu?

07-21
33.4° 22.1°
14.19 mm
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
Both models agree Avg diff: 2.9°C

Where are air quality stations near Chōfu?

23
Shimorenjaku, Mitaka, Tokyo, Japan (連雀通り下連雀三鷹市)
3.6 km PM2.5: 5.5 µg/m³
53
小金井市東町
4.7 km 93.1% RH PM2.5: 13.0 µg/m³ PM10: 35.0 µg/m³
70
多摩区登戸小学校
4.7 km 82.0% RH PM2.5: 21.0 µg/m³ PM10: 31.0 µg/m³
38
Sekimae, Musashino, Tokyo, Japan (武蔵野市関前武蔵野市)
5.8 km PM2.5: 9.1 µg/m³
39
Shukugawara, Kanagawa, Japan (本村橋川崎市多摩区)
6.0 km PM2.5: 9.4 µg/m³
57
西東京市南町
7.0 km 86.9% RH PM2.5: 15.0 µg/m³ PM10: 36.0 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
23
Katahira, Kanagawa, Japan (柿生川崎市麻生区)
9.0 km PM2.5: 5.5 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?

60 Komae 55 Kamirenjaku 68 Noborito 59 Inokashira 59 Inagi 55 Musashino 54 Koganei 59 Fuchū 56 Nishi-Tokyo-shi 62 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 2026-07-21T23:15 UTC.