Air Quality in Chichibu, Japan

Rain
18.7°C · 99.6% humidity
18.7°
Feels 18.7°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
10 5pm
10
12
19 8pm
17
14
13 11pm
12
11
11 2am
11
10
10 5am
10
10
10 8am
10
12
19 11am
19
12
12 2pm
12
19
Station readings 16h ago
AQI 11
PM2.5 2.6 µg/m³ · 16h ago
CAMS model adj -15
25
25
27
27
27
25
25
25
25
25
25
25
25
25
25
25
25
27
34
34
27
27
27
34
AD 728×90

Air Quality Index Trend

45h · 34 stn

Chichibu'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.

99.6%
Humidity
10.3 km/h
Wind ENE
1011.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.52 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chichibu?

Temperature & Precipitation

PM2.5 Trend

45h · 34 stations
PM2.54.52 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (5 stations within 25 km)
4.52
Median
4.72
Average
4.1
Low
5.8
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +1.6

What is the 7-day forecast for Chichibu?

09-05
21.8° 17.8°
17.88 mm
09-06
25.1° 17.9°
6.06 mm
09-07
24.7° 19.8°
4.13 mm
09-08
24.7° 17.6°
8.81 mm
09-09
22.3° 18.3°
5.0 mm
09-10
21.9° 19.8°
5.88 mm
09-11
27.3° 19.2°
13.38 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near Chichibu?

21
Hinodamachi, Chichibu, Saitama, Japan (秩父秩父市)
0.4 km PM2.5: 5.0 µg/m³
10
Minano, Saitama-ken, Japan (皆野秩父郡皆野町)
9.2 km PM2.5: 2.4 µg/m³
25
Yorii, Saitama, Japan (寄居大里郡寄居町)
17.2 km PM2.5: 6.0 µg/m³
13
Yorii, Saitama, Japan (寄居大里郡寄居町)
17.2 km PM2.5: 3.1 µg/m³
24
Iwai, Saitama Prefecture, Japan (毛呂山入間郡毛呂山町)
22.1 km PM2.5: 5.8 µg/m³
13
Nakakayama, Hidaka, Saitama, Japan (日高日高市)
26.4 km PM2.5: 3.1 µg/m³
22
Uwanodai, Fukaya, Saitama, Japan (深谷深谷市)
28.5 km PM2.5: 5.3 µg/m³
51
Higashioume, Oume, Tokyo, Japan (青梅市東青梅青梅市)
29.1 km PM2.5: 12.1 µg/m³
21
Nagaoka, Tokyo, Japan (東京環状長岡西多摩郡瑞穂町)
33.9 km PM2.5: 5.0 µg/m³

What cities are near Chichibu?

17 Yorii 22 Ogawamachi 22 Morohongō 20 Kodamachō-kodamaminami 24 Ranzan 21 Hannō 21 Hidaka 21 Ōme 17 Sakado 27 Yamata
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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 2026-09-05T11:16 UTC.