WorldArrow icon
Arrow iconNagano

Air quality in Nagano

Air quality index (AQI⁺) and PM2.5 air pollution in Nagano • 16:55, Aug 05

Atmospheric Environmental Regional Observation System (AEROS)Nagano Prefectural GovernmentKanagawa Prefectural Government
Atmospheric Environmental Regional Observation System (AEROS)Nagano Prefectural GovernmentKanagawa Prefectural Government

Live most polluted city ranking

Real-time Nagano most polluted city ranking

#CitiesAQI⁺ US
1
The national flag of Japan

Hakuba

53

2
The national flag of Japan

Toyonomachi Toyono

50

3
The national flag of Japan

Iida

31

4
The national flag of Japan

Suwa

25

5
The national flag of Japan

Chikuma

22

6
The national flag of Japan

Matsumoto

22

7
The national flag of Japan

Saku

19

8
The national flag of Japan

Okaya

17

9
The national flag of Japan

Ueda

17

10
The national flag of Japan

Habaue

4

Live cleanest city ranking

Real-time Nagano cleanest city ranking

#CitiesAQI⁺ US
1
The national flag of Japan

Kiso

2

2
The national flag of Japan

Ina

3

3
The national flag of Japan

Nagano

3

4
The national flag of Japan

Habaue

4

5
The national flag of Japan

Okaya

17

6
The national flag of Japan

Ueda

17

7
The national flag of Japan

Saku

19

8
The national flag of Japan

Chikuma

22

9
The national flag of Japan

Matsumoto

22

10
The national flag of Japan

Suwa

25

Evening view of Portland.
external link icon

August 5, 2026: Portland among top 10 most polluted cities in the world

external link icon

Wildfire Map Spotlight: North-Central and Eastern Oregon Wildfires

external link icon

Heatwave Map Spotlight: Europe

Which is the most polluted city in Nagano?