Air Quality in Iwai, Japan

Heavy Rain
19.7°C · 95.3% humidity
19.7°
Feels 19.7°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
22 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
21 9pm
21
19
24 12am
23
22
21 3am
20
20
20 6am
19
19
19 9am
21
21
21 12pm
21
21
21 3pm
21
28
28 6pm
48
48
Station readings
17
CAMS model adj -6
27
27
25
25
25
25
25
25
25
25
25
25
25
27
27
27
27
27
27
27
34
34
54
54
AD 728×90

Air Quality Index Trend

6h · 1 stn

Iwai'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.

95.3%
Humidity
45.3 km/h
Wind NNW
1008.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
24
5.8 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Iwai?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.55.8 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (22 stations within 25 km)
5.8
Median
5.09
Average
1.0
Low
14.0
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +0.1

What is the 7-day forecast for Iwai?

09-05
24.8° 19.7°
36.81 mm
09-06
26.7° 20.5°
4.44 mm
09-07
28.1° 21.2°
4.25 mm
09-08
26.7° 20.1°
4.19 mm
09-09
24.5° 20.5°
7.44 mm
09-10
24.1° 22.2°
1.75 mm
09-11
29.0° 21.9°
0.31 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Iwai?

29
檜原測定所
8.0 km 99.0% RH PM2.5: 7.0 µg/m³ PM10: 14.0 µg/m³
31
Nagaoka, Tokyo, Japan (東京環状長岡西多摩郡瑞穂町)
9.8 km PM2.5: 7.4 µg/m³
29
八王子市大楽寺町
10.3 km 89.2% RH PM2.5: 7.0 µg/m³ PM10: 14.0 µg/m³
21
Namiyanagi, Hannō-shi, Saitama-ken, Japan (飯能飯能市)
14.6 km PM2.5: 5.0 µg/m³
25
Tatemachi, Hachioji, Tokyo, Japan (八王子市館町八王子市)
14.8 km PM2.5: 6.0 µg/m³
9
Katakuramachi, Hachioji, Tokyo, Japan (八王子市片倉町八王子市)
15.5 km PM2.5: 2.2 µg/m³
30
Azumacho, Iruma, Saitama, Japan (入間入間市)
17.3 km PM2.5: 7.2 µg/m³
12
Nakano, Kanagawa, Japan (津久井相模原市緑区)
18.3 km PM2.5: 2.9 µg/m³
25
Nakakayama, Hidaka, Saitama, Japan (日高日高市)
18.8 km PM2.5: 6.0 µg/m³
25
Yaho, Kunitachi, Tokyo, Japan (甲州街道国立国立市)
20.0 km PM2.5: 6.0 µg/m³

What cities are near Iwai?

24 Akiruno 25 Itsukaichi 25 Ōme 28 Hamura 25 Fussa 30 Hakonegasaki 18 Hachiōji 24 Yokota 23 Akishima 21 Hannō
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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 2026-09-05T15:51 UTC.