What is the air quality in Niiza today?

The current Air Quality Index (AQI) in Niiza is 25 (Good). PM2.5 concentration is 6.05 µg/m³.

What is the temperature in Niiza right now?

The current temperature in Niiza is 15.3°C (feels like 15.3°C). Humidity is 75.2% and wind speed is 39.3 km/h.

Is it safe to go outside in Niiza?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Niiza, Japan

Drizzle

15.3°C · 75.2% humidity

15.3°

Feels 15.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

27 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings 9h ago

AQI 69

PM2.5 20.6 µg/m³ · 9h ago

Air Quality Index Trend

39h · 1 stn

View full history →

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.

75.2%

Humidity

39.3 km/h

Wind N

1021.6 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.05 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Niiza?

Temperature & Precipitation

PM2.5 Trend

39h · 1 station

PM2.56.05 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (27 stations within 25 km)

6.05

Median

6.72

Average

2.4

Low

26.8

High

PM2.5 µg/m³ · Model: 6.0 · Bias: -0.1

What is the 7-day forecast for Niiza?

10-21

21.6° 15.3°

0.75 mm

10-22

23.3° 18.1°

0.06 mm

10-23

22.5° 15.7°

10-24

21.9° 16.8°

0.94 mm

10-25

19.8° 14.2°

5.63 mm

10-26

20.7° 15.0°

10-27

19.2° 15.1°

0.25 mm

Both models agree Avg diff: 3.0°C

Where are air quality stations near Niiza?

Honda, Niiza-shi, Saitama-ken, Japan (新座新座市)

4.6 km PM2.5: 2.4 µg/m³

Niikura, Wakō-shi, Saitama-ken, Japan (和光新倉自排和光市)

5.5 km PM2.5: 6.0 µg/m³

Suwa, Wakō-shi, Saitama-ken, Japan (和光和光市)

7.2 km PM2.5: 3.1 µg/m³

Bijogi, Toda, Saitama, Japan (戸田美女木自排戸田市)

7.6 km PM2.5: 2.6 µg/m³

Shimohoya, Nishitokyo, Tokyo, Japan (西東京市下保谷西東京市)

7.9 km PM2.5: 13.1 µg/m³

Shimohoya, Nishitokyo, Tokyo, Japan (西東京市下保谷西東京市)

7.9 km PM2.5: 6.0 µg/m³

Tokorozawa, Saitama, Japan (所沢市和ヶ原所沢市)

8.4 km PM2.5: 22.1 µg/m³

Nishitokyo (西東京市)

10.8 km PM2.5: 8.2 µg/m³

西東京市南町

11.1 km 70.4% RH PM2.5: 4.0 µg/m³ PM10: 14.0 µg/m³

Honcho, Higashimurayama, Tokyo, Japan (新青梅街道東村山東村山市)

11.2 km PM2.5: 26.8 µg/m³

What cities are near Niiza?

28 Miyoshidai 24 Shiki 23 Asaka 30 Ōi 27 Kiyose 27 Ōizumi-gakuenchō 21 Wako 31 Kamifukuoka 23 Ōizumimachi 20 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 2026-10-21T08:29 UTC.