Air Quality in Niiza, Japan

Drizzle
23.7°C · 83.6% humidity
23.7°
Feels 23.7°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
47 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
70 5am
70
69
51 8am
52
40
40 11am
40
40
40 2pm
40
40
52 5pm
52
52
52 8pm
52
69
70 11pm
70
132
132 2am
132
132
Station readings
10
CAMS model adj -14
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

6h · 1 stn

Niiza'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.

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▲
51
12.26 µg/m³
PM10
44
48.05 µg/m³
050100150200300500

What is the weather forecast for Niiza?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.512.26 µg/m³ ✓ WHO
Moderate
PM1048.05 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (47 stations within 25 km)
12.26
Median
13.59
Average
1.9
Low
24.0
High
PM2.5 µg/m³ · Model: 23.15 · Bias: +10.9

What is the 7-day forecast for Niiza?

07-21
33.4° 22.1°
14.19 mm
07-22
30.2° 23.7°
3.0 mm
07-23
27.8° 22.1°
0.56 mm
07-24
29.8° 23.6°
1.56 mm
07-25
32.9° 23.6°
07-26
30.3° 26.1°
0.13 mm
07-27
33.3° 24.9°
9.94 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Niiza?

25
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
4.0 km PM2.5: 6.0 µg/m³
34
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
4.0 km PM2.5: 8.2 µg/m³
49
Tsuruma, Fujimi-shi, Saitama-ken, Japan (富士見富士見市)
4.1 km PM2.5: 11.8 µg/m³
13
Honda, Niiza-shi, Saitama-ken, Japan (新座新座市)
4.6 km PM2.5: 3.1 µg/m³
83
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
5.5 km PM2.5: 27.3 µg/m³
11
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
5.5 km PM2.5: 2.6 µg/m³
42
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
7.2 km PM2.5: 10.1 µg/m³
32
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
7.2 km PM2.5: 7.7 µg/m³
15
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
8.6 km PM2.5: 3.6 µg/m³
65
Shakujiimachi, Nerima, Tokyo, Japan (練馬区石神井台練馬区)
9.7 km PM2.5: 18.8 µg/m³

What cities are near Niiza?

54 Miyoshidai 53 Shiki 52 Asaka 55 Ōi 36 Kiyose 45 Ōizumi-gakuenchō 52 Wako 57 Kamifukuoka 50 Ōizumimachi 52 Narimasu
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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 2026-07-21T23:16 UTC.