Air Quality in Chichibu, Japan

Drizzle
20.5°C · 94.6% humidity
20.5°
Feels 20.5°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
6 stations

Nearby Monitoring Stations

AQI Forecast
34 5am
27
27
63 8am
53
45
40 11am
36
34
39 2pm
37
37
56 5pm
55
35
55 8pm
54
54
54 11pm
54
54
54 2am
54
54
AD 728×90

Air Quality Index Trend

47h · 5 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. Current PM2.5 concentration in Chichibu is 1.2× the WHO 24-hour guideline of 15 µg/m³.

94.6%
Humidity
10.5 km/h
Wind NE
1004.0 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
63
17.76 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chichibu?

Temperature & Precipitation

PM2.5 Trend

47h · 5 stations
PM2.517.76 µg/m³ ×1.2 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (6 stations within 25 km)
17.76
Median
10.58
Average
1.9
Low
17.8
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -11.3
Both models agree Avg diff: 3.4°C

Where are air quality stations near Chichibu?

66
Minano, Saitama-ken, Japan (皆野秩父郡皆野町)
9.2 km PM2.5: 19.2 µg/m³
17
Shiroishi, Saitama Prefecture, Japan (東秩父秩父郡東秩父村)
9.2 km PM2.5: 4.1 µg/m³
23
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
18.4 km PM2.5: 5.5 µg/m³
53
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
18.4 km PM2.5: 13.1 µg/m³
51
Iwai, Saitama Prefecture, Japan (毛呂山入間郡毛呂山町)
22.1 km PM2.5: 12.1 µg/m³
30
Iwai, Saitama Prefecture, Japan (毛呂山入間郡毛呂山町)
22.1 km PM2.5: 7.2 µg/m³
10
Namiyanagi, Hannō-shi, Saitama-ken, Japan (飯能飯能市)
27.3 km PM2.5: 2.4 µg/m³
10
Namiyanagi, Hannō-shi, Saitama-ken, Japan (飯能飯能市)
27.3 km PM2.5: 2.4 µg/m³
21
Higashioume, Oume, Tokyo, Japan (青梅市東青梅青梅市)
29.1 km PM2.5: 5.0 µg/m³
21
Haragō, Fukaya-shi, Saitama-ken, Japan (深谷原郷自排深谷市)
30.1 km PM2.5: 5.0 µg/m³

What cities are near Chichibu?

63 Yorii 21 Ogawamachi 38 Morohongō 52 Kodamachō-kodamaminami 45 Ranzan 50 Hannō 40 Hidaka 57 Ōme 48 Sakado 54 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 2026-07-21T23:15 UTC.