Air Quality in Yorii, Japan

Rain
21.2°C · 95.6% humidity
21.2°
Feels 21.2°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
24 5pm
24
26
17 8pm
20
19
21 11pm
22
22
23 2am
23
23
24 5am
24
24
24 8am
24
26
33 11am
33
26
26 2pm
26
33
Station readings 16h ago
AQI 11
PM2.5 2.6 µg/m³ · 16h ago
CAMS model adj -1
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

3h · 1 stn

Yorii'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.

95.6%
Humidity
19.9 km/h
Wind ESE
1010.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
17
4.11 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Yorii?

Temperature & Precipitation

PM2.5 Trend

3h · 1 station
PM2.54.11 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (12 stations within 25 km)
4.11
Median
5.01
Average
2.4
Low
8.2
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +2.0

What is the 7-day forecast for Yorii?

09-05
25.9° 20.5°
10.88 mm
09-06
28.5° 21.2°
6.69 mm
09-07
28.7° 22.3°
6.44 mm
09-08
28.1° 20.9°
9.94 mm
09-09
24.1° 21.5°
3.13 mm
09-10
24.7° 21.7°
10.63 mm
09-11
30.7° 21.5°
5.44 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Yorii?

13
Yorii, Saitama, Japan (寄居大里郡寄居町)
0.7 km PM2.5: 3.1 µg/m³
25
Yorii, Saitama, Japan (寄居大里郡寄居町)
0.7 km PM2.5: 6.0 µg/m³
10
Minano, Saitama-ken, Japan (皆野秩父郡皆野町)
9.9 km PM2.5: 2.4 µg/m³
22
Uwanodai, Fukaya, Saitama, Japan (深谷深谷市)
11.0 km PM2.5: 5.3 µg/m³
22
Kodamachō Takazeki, Honjō-shi, Saitama-ken, Japan (本庄児玉本庄市)
11.8 km PM2.5: 5.3 µg/m³
21
Hinode, Honjo, Saitama, Japan (本庄本庄市)
13.7 km PM2.5: 5.0 µg/m³
21
Hinodamachi, Chichibu, Saitama, Japan (秩父秩父市)
17.5 km PM2.5: 5.0 µg/m³
21
Miyacho, Kumagaya, Saitama, Japan (熊谷熊谷市)
17.8 km PM2.5: 5.0 µg/m³
24
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 5.8 µg/m³
22
Menumahigashi, Kumagaya-shi, Saitama-ken, Japan (熊谷妻沼東熊谷市)
20.6 km PM2.5: 5.3 µg/m³

What cities are near Yorii?

22 Ogawamachi 20 Kodamachō-kodamaminami 20 Fukayachō 24 Ranzan 18 Honjō 19 Ishigami 27 Yamata 19 Chichibu 18 Sakai-nakajima 24 Kumagaya
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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 2026-09-05T11:13 UTC.