Air Quality in Sayama, Japan

Drizzle
23.7°C · 83.6% humidity
23.7°
Feels 23.7°
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
34 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
82 5am
82
81
58 8am
60
49
50 11am
50
51
51 2pm
51
52
64 5pm
64
64
64 8pm
64
81
82 11pm
82
144
144 2am
144
144
Station readings 20h ago
AQI 84
PM2.5 27.6 µg/m³ · 20h ago
CAMS model adj -2
84
84
83
66
66
54
54
54
54
54
54
54
66
66
66
66
66
83
84
84
146
146
146
146
AD 728×90

Air Quality Index Trend

5h · 1 stn

Sayama'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 Sayama is 1.0× the WHO 24-hour guideline of 15 µg/m³.

83.6%
Humidity
54.5 km/h
Wind NNW
1002.6 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
58
15.54 µg/m³
PM10
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Sayama?

Temperature & Precipitation

PM2.5 Trend

5h · 1 station
PM2.515.54 µg/m³ ✓ WHO
Moderate
PM1041.15 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (34 stations within 25 km)
15.54
Median
13.41
Average
1.9
Low
26.8
High
PM2.5 µg/m³ · Model: 23.15 · Bias: +7.6
Both models agree Avg diff: 3.1°C

Where are air quality stations near Sayama?

28
Azumacho, Iruma, Saitama, Japan (入間入間市)
2.7 km PM2.5: 6.7 µg/m³
39
Horigane, Sayama-shi, Saitama-ken, Japan (狭山狭山市)
3.4 km PM2.5: 9.4 µg/m³
40
Horigane, Sayama-shi, Saitama-ken, Japan (狭山狭山市)
3.4 km PM2.5: 9.6 µg/m³
10
Namiyanagi, Hannō-shi, Saitama-ken, Japan (飯能飯能市)
7.5 km PM2.5: 2.4 µg/m³
10
Namiyanagi, Hannō-shi, Saitama-ken, Japan (飯能飯能市)
7.5 km PM2.5: 2.4 µg/m³
11
Iseharachō, Kawagoe-shi, Saitama-ken, Japan (川越市霞ケ関川越市)
7.9 km PM2.5: 2.6 µg/m³
7
Iseharachō, Kawagoe-shi, Saitama-ken, Japan (川越市霞ケ関川越市)
7.9 km PM2.5: 1.7 µg/m³
30
Sunashinden, Kawagoe-shi, Saitama-ken, Japan (川越市高階川越市)
7.9 km PM2.5: 7.2 µg/m³
38
Sunashinden, Kawagoe-shi, Saitama-ken, Japan (川越市高階川越市)
7.9 km PM2.5: 9.1 µg/m³
21
Ōtagaya, Tsurugashima-shi, Saitama-ken, Japan (鶴ヶ島自排鶴ヶ島市)
8.9 km PM2.5: 5.0 µg/m³

What cities are near Sayama?

55 Iruma 38 Tokorozawa 40 Hidaka 50 Hannō 58 Kawagoe 57 Kamifukuoka 55 Ōi 53 Higashiyamato 57 Hakonegasaki 49 Akitsu
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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.