Air Quality in Sayama, Japan

Drizzle
24.6°C · 77.1% humidity
24.6°
Feels 24.6°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
30 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
20 5pm
20
20
21 8pm
20
20
20 11pm
20
20
18 2am
18
18
18 5am
18
18
20 8am
20
20
27 11am
27
27
47 2pm
47
47
Station readings
11
35
CAMS model adj -7
27
27
27
27
27
27
27
27
27
25
25
25
25
25
25
27
27
27
34
34
34
54
54
54
AD 728×90

Air Quality Index Trend

40h · 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.

77.1%
Humidity
42.5 km/h
Wind ENE
1010.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
21
5.02 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sayama?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.55.02 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (30 stations within 25 km)
5.02
Median
5.57
Average
1.9
Low
8.2
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +1.2

What is the 7-day forecast for Sayama?

09-05
27.4° 20.8°
19.19 mm
09-06
31.1° 23.4°
2.12 mm
09-07
31.0° 23.2°
2.06 mm
09-08
31.7° 22.8°
1.88 mm
09-09
27.7° 22.5°
8.75 mm
09-10
27.9° 24.2°
2.63 mm
09-11
31.8° 24.2°
0.19 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Sayama?

21
Azumacho, Iruma, Saitama, Japan (入間入間市)
2.7 km PM2.5: 5.0 µg/m³
17
Azumacho, Iruma, Saitama, Japan (入間入間市)
2.7 km PM2.5: 4.1 µg/m³
29
Horigane, Sayama-shi, Saitama-ken, Japan (狭山狭山市)
3.4 km PM2.5: 7.0 µg/m³
13
Nakakayama, Hidaka, Saitama, Japan (日高日高市)
7.6 km PM2.5: 3.1 µg/m³
33
Tokorozawa (所沢)
7.8 km PM2.5: 7.9 µg/m³
22
Iseharachō, Kawagoe-shi, Saitama-ken, Japan (川越市霞ケ関川越市)
7.9 km PM2.5: 5.3 µg/m³
21
Sunashinden, Kawagoe-shi, Saitama-ken, Japan (川越市高階川越市)
7.9 km PM2.5: 5.0 µg/m³
21
Nagaoka, Tokyo, Japan (東京環状長岡西多摩郡瑞穂町)
11.1 km PM2.5: 5.0 µg/m³
9
Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)
12.6 km PM2.5: 2.2 µg/m³
17
Kamikiyoto, Kiyose, Tokyo, Japan (清瀬市上清戸清瀬市)
13.2 km PM2.5: 4.1 µg/m³

What cities are near Sayama?

21 Iruma 8 Tokorozawa 21 Hidaka 21 Hannō 29 Kawagoe 20 Kamifukuoka 22 Ōi 23 Higashiyamato 22 Hakonegasaki 23 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 2026-09-05T11:17 UTC.