Air Quality in Chiyoda, Japan

Rain
23.6°C · 87.1% humidity
23.6°
Feels 23.6°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
55 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
87 5am
149
87
63 8am
70
74
79 11am
81
83
84 2pm
85
85
85 5pm
85
85
86 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

Chiyoda'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 Chiyoda is 1.2× the WHO 24-hour guideline of 15 µg/m³.

87.1%
Humidity
63.6 km/h
Wind NNW
1002.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
63
17.96 µg/m³
PM10▲
76
104.9 µg/m³
050100150200300500

What is the weather forecast for Chiyoda?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.517.96 µg/m³ ×1.2 WHO
Moderate
PM10104.9 µg/m³
Moderate
UV INDEX4.4
Moderate
AD 300×250
Station readings (55 stations within 25 km)
17.96
Median
14.26
Average
0.5
Low
24.0
High
PM2.5 µg/m³ · Model: 28.0 · Bias: +10.0
Both models agree Avg diff: 2.5°C

Where are air quality stations near Chiyoda?

76
Hibiyakoen, Chiyoda, Tokyo, Japan (日比谷交差点千代田区)
1.7 km PM2.5: 24.0 µg/m³
63
Shinkawa, Chuo, Tokyo, Japan (永代通り新川中央区)
3.4 km PM2.5: 17.8 µg/m³
61
Naitomachi, Shinjuku, Tokyo, Japan (国設新宿新宿区)
3.8 km PM2.5: 16.9 µg/m³
65
Harumi, Chuo, Tokyo, Japan (中央区晴海中央区)
4.6 km PM2.5: 18.8 µg/m³
–
Takanawa, Minato-ku, Tōkyō-to, Japan (港区高輪港区)
4.9 km
27
Takanawa, Minato-ku, Tōkyō-to, Japan (港区高輪港区)
4.9 km PM2.5: 6.5 µg/m³
27
Takanawa, Minato, Tokyo, Japan (第一京浜高輪港区)
5.7 km PM2.5: 6.5 µg/m³
70
スカイツリー３２５ｍ
6.1 km 78.8% RH PM2.5: 21.0 µg/m³ PM10: 36.0 µg/m³
80
スカイツリー１５０ｍ
6.1 km 90.8% RH PM2.5: 26.0 µg/m³ PM10: 43.0 µg/m³
61
Minowa, Taito, Tokyo, Japan (明治通り大関横丁台東区)
6.2 km PM2.5: 16.9 µg/m³

What cities are near Chiyoda?

58 Akasaka 61 Akihabara 64 Chūō 56 Minato City 54 Yotsuya 62 Taito 56 Kachidoki 53 Shinjuku 40 Ōkubo 51 Ōtsuka
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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 2026-07-21T23:16 UTC.