Air Quality in Nagano, Japan
Drizzle
14.9°C · 96.4% humidity
14.9°
Feels 14.9°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Nagano's air quality — share it
AQI Forecast
27
2am
27
25
21
5am
25
25
25
8am
25
25
25
11am
25
25
25
2pm
25
25
25
5pm
27
27
34
8pm
34
27
27
11pm
27
27
Air Quality Index Trend
43h · 2 stnNagano'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.
96.4%
Humidity
18.3 km/h
Wind SW
1020.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.0 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Nagano?
Temperature & Precipitation
PM2.5 Trend
43h · 2 stationsPM2.55.0 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
5.0
Median
5.0
Average
5.0
Low
5.0
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +4.8
What is the 7-day forecast for Nagano?
05-29
21.3° 14.9°
40.06 mm
05-30
22.8° 13.3°
2.63 mm
05-31
24.8° 14.7°
0.06 mm
06-01
22.7° 15.7°
0.31 mm
06-02
23.2° 13.5°
0.31 mm
06-03
26.1° 16.6°
4.19 mm
06-04
21.0° 11.3°
1.31 mm
Both models agree
Avg diff: 2.7°C
Where are air quality stations near Nagano?
53
Nagano (長野)
42
Nagano (長野)
53
Amori, Nagano, Nagano, Japan (環境保全研究所長野市)
32
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
62
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
What cities are near Nagano?
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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 2026-05-29T20:42 UTC.