Air Quality in Yorii, Japan

Drizzle
24.7°C · 81.7% humidity
24.7°
Feels 24.7°
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
0 8am
0
19
55 11am
45
37
32 2pm
28
26
24 5pm
22
22
21 8pm
20
20
20 11pm
19
19
19 2am
19
19
19 5am
19
19
Station readings
21
CAMS model adj -35
34
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

4h · 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.

81.7%
Humidity
14.5 km/h
Wind ENE
1009.7 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
55
14.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Yorii?

Temperature & Precipitation

PM2.5 Trend

4h · 1 station
PM2.514.0 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (1 station within 25 km)
14.0
Median
14.0
Average
14.0
Low
14.0
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -3.2

What is the 7-day forecast for Yorii?

08-03
26.2° 21.6°
6.63 mm
08-04
32.8° 23.8°
1.13 mm
08-05
31.6° 23.8°
3.5 mm
08-06
28.4° 24.0°
49.06 mm
08-07
36.1° 23.4°
20.56 mm
08-08
34.8° 24.7°
52.13 mm
08-09
34.0° 21.5°
1.75 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Yorii?

30
Sakurazawa, Saitama Prefecture, Japan (寄居桜沢自排大里郡寄居町)
0.6 km PM2.5: 7.2 µg/m³
13
Shiroishi, Saitama Prefecture, Japan (東秩父秩父郡東秩父村)
11.0 km PM2.5: 3.1 µg/m³
29
Haragō, Fukaya-shi, Saitama-ken, Japan (深谷原郷自排深谷市)
12.6 km PM2.5: 7.0 µg/m³
21
Hinodamachi, Chichibu, Saitama, Japan (秩父秩父市)
17.5 km PM2.5: 5.0 µg/m³
20
Miyacho, Kumagaya, Saitama, Japan (熊谷熊谷市)
17.8 km PM2.5: 4.8 µg/m³
40
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 9.6 µg/m³
42
Nagano, Gyōda-shi, Saitama-ken, Japan (行田行田市)
24.8 km PM2.5: 10.1 µg/m³
24
Iidacho, Ota, Gunma, Japan (太田市立中央小学校太田市)
25.7 km PM2.5: 5.8 µg/m³
30
Iidacho, Ota, Gunma, Japan (太田市立中央小学校太田市)
25.7 km PM2.5: 7.2 µg/m³
25
Ōtagaya, Tsurugashima-shi, Saitama-ken, Japan (鶴ヶ島自排鶴ヶ島市)
27.4 km PM2.5: 6.0 µg/m³

What cities are near Yorii?

55 Ogawamachi 54 Kodamachō-kodamaminami 45 Fukayachō 51 Ranzan 54 Honjō 54 Ishigami 47 Yamata 40 Chichibu 42 Sakai-nakajima 47 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 2026-08-08T02:00 UTC.