Air Quality in Yorii, Japan

Drizzle
22.8°C · 87.6% humidity
22.8°
Feels 22.8°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
9 stations

Nearby Monitoring Stations

AQI Forecast
27 6am
27
27
59 9am
50
43
39 12pm
35
40
38 3pm
37
56
56 6pm
35
55
55 9pm
54
54
54 12am
54
54
54 3am
54
34
AD 728×90

Air Quality Index Trend

47h · 4 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. Current PM2.5 concentration in Yorii is 1.1× the WHO 24-hour guideline of 15 µg/m³.

87.6%
Humidity
4.3 km/h
Wind SSW
1003.0 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
15.81 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Yorii?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations
PM2.515.81 µg/m³ ×1.1 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (9 stations within 25 km)
15.81
Median
11.64
Average
4.1
Low
22.1
High
PM2.5 µg/m³ · Model: 12.85 · Bias: -3.0

What is the 7-day forecast for Yorii?

07-22
27.9° 22.8°
2.38 mm
07-23
25.7° 19.7°
3.75 mm
07-24
29.4° 23.8°
3.38 mm
07-25
32.9° 22.9°
1.5 mm
07-26
35.6° 24.0°
07-27
31.3° 22.7°
6.13 mm
07-28
30.1° 24.0°
6.0 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Yorii?

44
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
8.7 km PM2.5: 10.6 µg/m³
53
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
8.7 km PM2.5: 13.1 µg/m³
21
Minano, Saitama-ken, Japan (皆野秩父郡皆野町)
9.9 km PM2.5: 5.0 µg/m³
17
Shiroishi, Saitama Prefecture, Japan (東秩父秩父郡東秩父村)
11.0 km PM2.5: 4.1 µg/m³
16
Kodamachō Takazeki, Honjō-shi, Saitama-ken, Japan (本庄児玉本庄市)
11.8 km PM2.5: 3.8 µg/m³
73
Kodamachō Takazeki, Honjō-shi, Saitama-ken, Japan (本庄児玉本庄市)
11.8 km PM2.5: 22.6 µg/m³
21
Haragō, Fukaya-shi, Saitama-ken, Japan (深谷原郷自排深谷市)
12.6 km PM2.5: 5.0 µg/m³
26
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 6.2 µg/m³
62
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 17.3 µg/m³
43
Menumahigashi, Kumagaya-shi, Saitama-ken, Japan (熊谷妻沼東熊谷市)
20.6 km PM2.5: 10.3 µg/m³

What cities are near Yorii?

55 Ogawamachi 34 Kodamachō-kodamaminami 18 Fukayachō 53 Ranzan 28 Honjō 29 Ishigami 48 Yamata 47 Chichibu 36 Sakai-nakajima 55 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 2026-07-22T00:21 UTC.