Air Quality in Niiza, Japan
Windy
22.8°C · 66.3% humidity
22.8°
Feels 22.8°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
54 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
26
4am
26
26
32
7am
30
29
28
10am
28
27
27
1pm
27
26
26
4pm
26
26
26
7pm
26
6
0
10pm
0
0
0
1am
0
0
Station readings
41
48
25
11
CAMS model
adj -28
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
34
27
27
25
25
25
25
Air Quality Index Trend
31h · 1 stnNiiza'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 1.5× the WHO annual guideline of 5 µg/m³.
66.3%
Humidity
152.4 km/h
Wind S
998.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.67 µg/m³
PM10
34.3 µg/m³
050100150200300500
What is the weather forecast for Niiza?
Temperature & Precipitation
PM2.5 Trend
31h · 1 stationPM2.57.67 µg/m³
✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX4.4
Moderate
Station readings (54 stations within 25 km)
7.67
Median
7.68
Average
3.6
Low
11.0
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +5.8
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)
25
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
46
Tsuruma, Fujimi-shi, Saitama-ken, Japan (富士見富士見市)
10
Honda, Niiza-shi, Saitama-ken, Japan (新座新座市)
60
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
15
Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)
38
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
50
Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)
34
Chuocho, Higashikurume, Tokyo, Japan (小金井街道東久留米東久留米市)
11
Shakujiimachi, Nerima, Tokyo, Japan (練馬区石神井台練馬区)
What cities are near Niiza?
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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 2026-05-28T22:52 UTC.