Air Quality in Nagano, Japan
Rain
19.0°C · 97.5% humidity
19.0°
Feels 19.0°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Nagano's air quality — share it
AQI Forecast
Calibrated
63
4pm
63
63
25
7pm
36
43
48
10pm
52
55
57
1am
58
59
60
4am
61
61
61
7am
62
62
62
10am
62
62
62
1pm
62
62
Station readings
24h ago
AQI 63
PM2.5 17.8 µg/m³ · 24h ago
Air Quality Index Trend
43h · 3 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.
97.5%
Humidity
22.3 km/h
Wind SSW
1010.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Nagano?
Temperature & Precipitation
PM2.5 Trend
43h · 3 stationsPM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
6.0
Median
6.0
Average
6.0
Low
6.0
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.0
What is the 7-day forecast for Nagano?
09-05
29.0° 19.0°
4.75 mm
09-06
25.9° 18.1°
2.13 mm
09-07
28.7° 17.6°
1.5 mm
09-08
23.0° 16.1°
5.19 mm
09-09
25.9° 17.1°
0.38 mm
09-10
23.5° 19.1°
7.0 mm
09-11
26.5° 16.7°
1.69 mm
Both models agree
Avg diff: 2.2°C
Where are air quality stations near Nagano?
34
Nagano (長野)
25
Awasa, Chikuma, Nagano, Japan (更埴インターチェンジ千曲市)
25
Awasa, Chikuma, Nagano, Japan (更埴インターチェンジ千曲市)
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 2026-09-05T10:11 UTC.