Air Quality in Nagano, Japan

Clear
22.6°C · 43.8% humidity
22.6°
Feels 22.6°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast
24 11am
24
25
40 2pm
36
33
33 5pm
31
30
29 8pm
28
28
35 11pm
35
34
34 2am
34
34
34 5am
34
34
27 8am
25
25
AD 728×90

Air Quality Index Trend

47h · 8 stn

Nagano'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.

43.8%
Humidity
13.6 km/h
Wind NE
1014.2 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
40
9.74 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

47h · 8 stations
PM2.59.74 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
9.74
Median
7.25
Average
3.1
Low
11.3
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -3.7
06-09
22.6° 15.7°
0.31 mm
06-10
20.0° 13.3°
5.81 mm
06-11
23.7° 13.6°
0.19 mm
06-12
18.2° 14.8°
0.94 mm
06-13
25.6° 15.1°
0.13 mm
06-14
30.0° 16.0°
0.06 mm
06-15
26.4° 15.7°
0.69 mm
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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 2026-06-09T05:11 UTC.