Air Quality in Niiza, Japan

Windy
22.8°C · 66.3% humidity
22.8°
Feels 22.8°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
50 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
27 3am
27
27
30 6am
27
27
27 9am
27
27
27 12pm
27
27
27 3pm
27
27
27 6pm
27
27
7 9pm
0
0
0 12am
0
0
Station readings
25
41
48
25
CAMS model adj -27
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
27
27
25
25
25
AD 728×90

Air Quality Index Trend

31h · 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. Current PM2.5 concentration in Niiza is 1.4× the WHO annual guideline of 5 µg/m³.

66.3%
Humidity
152.4 km/h
Wind S
998.4 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.12 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Niiza?

Temperature & Precipitation

PM2.5 Trend

31h · 1 station
PM2.57.12 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (50 stations within 25 km)
7.12
Median
6.92
Average
0.2
Low
13.1
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +6.4

What is the 7-day forecast for Niiza?

05-28
29.9° 15.9°
05-29
24.9° 19.9°
0.06 mm
05-30
24.8° 19.7°
0.44 mm
05-31
27.1° 20.3°
06-01
28.2° 21.4°
06-02
27.4° 20.8°
0.06 mm
06-03
28.1° 23.1°
0.06 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Niiza?

9
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
4.0 km PM2.5: 2.2 µg/m³
41
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
4.0 km PM2.5: 9.8 µg/m³
46
Tsuruma, Fujimi-shi, Saitama-ken, Japan (富士見富士見市)
4.1 km PM2.5: 11.0 µg/m³
10
Honda, Niiza-shi, Saitama-ken, Japan (新座新座市)
4.6 km PM2.5: 2.4 µg/m³
60
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
5.5 km PM2.5: 16.4 µg/m³
17
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
5.5 km PM2.5: 4.1 µg/m³
55
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
7.2 km PM2.5: 14.0 µg/m³
5
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
7.2 km PM2.5: 1.2 µg/m³
34
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
8.6 km PM2.5: 8.2 µg/m³
11
Shakujiimachi, Nerima, Tokyo, Japan (練馬区石神井台練馬区)
9.7 km PM2.5: 2.6 µg/m³

What cities are near Niiza?

35 Miyoshidai 30 Shiki 23 Asaka 37 Ōi 38 Kiyose 23 Ōizumi-gakuenchō 23 Wako 36 Kamifukuoka 23 Ōizumimachi 25 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 2026-05-28T21:36 UTC.