Air Quality in Nagano, Japan

Heavy Rain
22.4°C · 85.6% humidity
22.4°
Feels 22.4°
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
25 5am
25
25
36 8am
33
30
28 11am
27
27
26 2pm
28
28
27 5pm
27
27
34 8pm
34
54
54 11pm
54
34
27 2am
27
27
AD 728×90

Air Quality Index Trend

44h · 2 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.

85.6%
Humidity
42.7 km/h
Wind SSW
1002.3 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
36
8.61 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Nagano?

Temperature & Precipitation

PM2.5 Trend

44h · 2 stations
PM2.58.61 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (2 stations within 25 km)
8.61
Median
9.6
Average
8.6
Low
10.6
High
PM2.5 µg/m³ · Model: 12.6 · Bias: +4.0
Both models agree Avg diff: 2.4°C

Where are air quality stations near Nagano?

99
Nagano (長野)
1.0 km PM2.5: 34.9 µg/m³
63
Nagano (長野)
1.0 km PM2.5: 17.8 µg/m³
93
Amori, Nagano, Nagano, Japan (環境保全研究所長野市)
1.8 km PM2.5: 32.1 µg/m³
6
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
8.9 km PM2.5: 1.4 µg/m³
50
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
8.9 km PM2.5: 12.0 µg/m³

What cities are near Nagano?

38 Suzaka 44 Chikuma 36 Nakano 42 Sakaki 53 Iiyama 56 Ueda 62 Ōmachi 61 Tōmi 72 Kamimaruko 65 Arai
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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 2026-07-21T23:15 UTC.