Air Quality in Yorii, Japan

Drizzle
21.3°C · 67.3% humidity
21.3°
Feels 21.3°
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
14 stations

Nearby Monitoring Stations

AQI Forecast
54 4am
54
54
36 7am
41
45
20 10am
22
24
25 1pm
32
53
53 4pm
53
54
54 7pm
54
34
25 10pm
25
25
25 1am
27
27
AD 728×90

Air Quality Index Trend

48h · 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. Current PM2.5 concentration in Yorii is 1.7× the WHO annual guideline of 5 µg/m³.

67.3%
Humidity
15.7 km/h
Wind NE
997.9 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
36
8.55 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Yorii?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.58.55 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (14 stations within 25 km)
8.55
Median
7.81
Average
2.2
Low
11.0
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +4.9

What is the 7-day forecast for Yorii?

05-28
31.5° 14.6°
4.87 mm
05-29
24.0° 18.8°
7.38 mm
05-30
23.4° 15.6°
0.88 mm
05-31
25.7° 18.4°
0.06 mm
06-01
27.2° 19.3°
06-02
26.4° 17.8°
0.38 mm
06-03
27.9° 20.6°
1.13 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Yorii?

2
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
8.7 km PM2.5: 0.5 µg/m³
11
Ōtsuka, Saitama-ken, Japan (小川比企郡小川町)
8.7 km PM2.5: 2.6 µg/m³
37
Minano, Saitama-ken, Japan (皆野秩父郡皆野町)
9.9 km PM2.5: 8.9 µg/m³
38
Shiroishi, Saitama Prefecture, Japan (東秩父秩父郡東秩父村)
11.0 km PM2.5: 9.1 µg/m³
36
Kodamachō Takazeki, Honjō-shi, Saitama-ken, Japan (本庄児玉本庄市)
11.8 km PM2.5: 8.6 µg/m³
52
Kodamachō Takazeki, Honjō-shi, Saitama-ken, Japan (本庄児玉本庄市)
11.8 km PM2.5: 12.6 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
36
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 8.6 µg/m³
34
Matsuyama, Higashimatsuyama, Saitama Prefecture, Japan (東松山岩鼻自排東松山市)
20.6 km PM2.5: 8.2 µg/m³
44
Menumahigashi, Kumagaya-shi, Saitama-ken, Japan (熊谷妻沼東熊谷市)
20.6 km PM2.5: 10.6 µg/m³

What cities are near Yorii?

29 Ogawamachi 38 Kodamachō-kodamaminami 44 Fukayachō 31 Ranzan 38 Honjō 38 Ishigami 29 Yamata 30 Chichibu 33 Sakai-nakajima 30 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 2026-05-28T22:52 UTC.