What is the air quality in Nagai today?

The current Air Quality Index (AQI) in Nagai is 19 (Good). PM2.5 concentration is 4.62 µg/m³.

What is the temperature in Nagai right now?

The current temperature in Nagai is 18.5°C (feels like 18.5°C). Humidity is 57.3% and wind speed is 21.1 km/h.

Is it safe to go outside in Nagai?

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

Air Quality in Nagai, Japan

Partly Cloudy

18.5°C · 57.3% humidity

18.5°

Feels 18.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

24h · 1 stn

View full history →

Nagai'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.

57.3%

Humidity

21.1 km/h

Wind ESE

1018.4 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.62 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Nagai?

Temperature & Precipitation

PM2.5 Trend

24h · 1 station

PM2.54.62 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Nagai?

10-21

18.5° 8.4°

10-22

19.2° 10.3°

0.69 mm

10-23

14.5° 4.9°

1.5 mm

10-24

12.9° 12.3°

6.81 mm

10-25

16.3° 7.6°

1.25 mm

10-26

15.9° 6.4°

0.19 mm

10-27

14.4° 8.2°

0.56 mm

Both models agree Avg diff: 3.7°C

What cities are near Nagai?

19 Nanyō 17 Takahata 20 Kaminoyama 16 Yonezawa 32 Yamagata 32 Sagae 37 Tendō 35 Yachi 47 Higashine 34 Murakami

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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 2026-10-21T08:35 UTC.