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
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.

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
18
4.43 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Nagano?

Temperature & Precipitation

PM2.5 Trend

47h · 8 stations
PM2.54.43 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
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)
1.0 km PM2.5: 13.1 µg/m³
42
Nagano (長野)
1.0 km PM2.5: 10.1 µg/m³
53
Amori, Nagano, Nagano, Japan (環境保全研究所長野市)
1.8 km PM2.5: 13.1 µg/m³
32
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
8.9 km PM2.5: 7.7 µg/m³
62
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
8.9 km PM2.5: 17.3 µg/m³

What cities are near Nagano?

18 Suzaka 14 Chikuma 31 Nakano 16 Sakaki 26 Iiyama 28 Ueda 48 Ōmachi 36 Tōmi 42 Kamimaruko 27 Arai
Get AQI alerts for Nagano

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

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.