Air Quality in Nagano, Japan
Drizzle
19.9°C · 61.0% humidity
19.9°
Feels 19.9°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
27
3am
25
25
18
6am
20
21
22
9am
23
24
24
12pm
24
25
25
3pm
25
25
27
6pm
27
34
34
9pm
27
27
27
12am
27
34
Air Quality Index Trend
47h · 8 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.
61.0%
Humidity
22.0 km/h
Wind SSW
1014.6 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
4.43 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for Nagano?
Temperature & Precipitation
PM2.5 Trend
47h · 8 stationsPM2.54.43 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
Station readings (2 stations within 25 km)
4.43
Median
4.05
Average
3.1
Low
5.0
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +5.3
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 2026-05-29T21:38 UTC.