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Air quality in Nagano

Air quality index (AQI⁺) and PM2.5 air pollution in Nagano • 19:15, Sep 01

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

Matsumoto

28

2
The national flag of Japan

Suwa

25

3
The national flag of Japan

Iida

22

4
The national flag of Japan

Okaya

22

5
The national flag of Japan

Ina

17

6
The national flag of Japan

Ueda

8

7
The national flag of Japan

Saku

6

8
The national flag of Japan

Chikuma

5

9
The national flag of Japan

Habaue

5

10
The national flag of Japan

Nagano

3

Live cleanest city ranking

Real-time Nagano cleanest city ranking

#CitiesAQI⁺ US
1
The national flag of Japan

Kiso

1

2
The national flag of Japan

Nagano

3

3
The national flag of Japan

Chikuma

5

4
The national flag of Japan

Habaue

5

5
The national flag of Japan

Saku

6

6
The national flag of Japan

Ueda

8

7
The national flag of Japan

Ina

17

8
The national flag of Japan

Iida

22

9
The national flag of Japan

Okaya

22

10
The national flag of Japan

Suwa

25

Wildfires in Nagano

Real-time information

Active fires

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IQAir Healthpro Plus XE in a living room
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Do air purifiers remove odors or just reduce them?

Dense forest burning.
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Wildfire Map Spotlight: Austin Fire, Oregon

Evening view of Portland.
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September 1, 2026: Portland among top 10 most polluted cities in the world

Which is the most polluted city in Nagano?