Air Quality in Nagano, Japan

Overcast
20.6°C · 91.3% humidity
20.6°
Feels 20.6°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
25 7am
25
25
30 10am
29
28
27 1pm
26
26
25 4pm
24
24
24 7pm
25
25
27 10pm
34
27
27 1am
27
27
27 4am
27
27
AD 728×90

Air Quality Index Trend

43h · 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.

91.3%
Humidity
19.4 km/h
Wind SSW
1009.9 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.1 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Nagano?

Temperature & Precipitation

PM2.5 Trend

43h · 8 stations
PM2.57.1 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250

What is the 7-day forecast for Nagano?

08-03
29.6° 20.5°
4.5 mm
08-04
34.5° 21.2°
6.62 mm
08-05
26.5° 19.3°
1.94 mm
08-06
26.7° 19.9°
43.0 mm
08-07
31.9° 20.4°
3.06 mm
08-08
30.3° 21.9°
27.56 mm
08-09
26.1° 19.8°
2.12 mm
Both models agree Avg diff: 4.2°C

Where are air quality stations near Nagano?

14
Nagano (長野)
1.0 km PM2.5: 3.4 µg/m³
25
Amori, Nagano, Nagano, Japan (環境保全研究所長野市)
1.8 km PM2.5: 6.0 µg/m³
42
Awasa, Chikuma, Nagano, Japan (更埴インターチェンジ千曲市)
13.6 km PM2.5: 10.1 µg/m³
21
Awasa, Chikuma, Nagano, Japan (更埴インターチェンジ千曲市)
13.6 km PM2.5: 5.0 µg/m³

What cities are near Nagano?

34 Suzaka 27 Chikuma 28 Nakano 27 Sakaki 28 Iiyama 34 Ueda 26 Ōmachi 34 Tōmi 31 Kamimaruko 31 Arai
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:56 UTC.