AQI PM2.5 PM10 CO SO2 NO2 O3

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Shimomura Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Nagano

Last Updated: 2025-05-26 04:54:17 PM (Local Time)

Live AQI

Air Quality is

Good

pm10 : 10 µg/m³

PM2.5 : 5 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

16 °C

Last Updated: 2025-05-26 04:54:17 PM (Local Time)

Map

Shimomura

Major Air Pollutants
Shimomura

Particulate Matter(PM2.5)

5µg/m³

Particulate Matter(PM10)

10µg/m³

Carbon Monoxide(CO)

105ppb

Sulfur Dioxide(SO2)

1ppb

Nitrogen Dioxide(NO2)

5ppb

Ozone(O3)

37ppb

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AQI Graph

Historical Air Quality Data
Shimomura

24 Hours

AQI

Shimomura

Want air quality data?

AQI Trends - Annual Air Quality Changes
Shimomura, Nagano, Japan

AQI

Year

AQI

Annual AQI Trends

2020

28AQI

2021

30AQI

Rise

2022

35AQI

17%

Rise

2023

37AQI

Rise

2024

34AQI

-8%

Fall

2025

37AQI

Rise

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedAugust, 202053AQI

Least PollutedJanuary, 202116AQI

* This data analysis is from year 2020 - 2025

Shimomura's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Shinmeicho

Good

Japan's Metro Cities
Air Quality Index

Aomori

Higashi Hiroshima

Higashi Osaka

Kyoto

Saitama

Sendai

Tokyo

Yokohama

Air Quality Calendar 2025
Shimomura

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 30	2 Jan 30	3 Jan 29	4 Jan 28
5 Jan 28	6 Jan 31	7 Jan 27	8 Jan 26	9 Jan 26	10 Jan 24	11 Jan 26
12 Jan 28	13 Jan 26	14 Jan 29	15 Jan 30	16 Jan 25	17 Jan 25	18 Jan 25
19 Jan 27	20 Jan 35	21 Jan 32	22 Jan 37	23 Jan 48	24 Jan 52	25 Jan 37
26 Jan 35	27 Jan 28	28 Jan 29	29 Jan 30	30 Jan 28	31 Jan 32	1 Feb 45

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 35	27 Jan 28	28 Jan 29	29 Jan 30	30 Jan 28	31 Jan 32	1 Feb 45
2 Feb 41	3 Feb 43	4 Feb 35	5 Feb 36	6 Feb 32	7 Feb 35	8 Feb 31
9 Feb 30	10 Feb 30	11 Feb 31	12 Feb 31	13 Feb 32	14 Feb 30	15 Feb 31
16 Feb 44	17 Feb 39	18 Feb 37	19 Feb 33	20 Feb 31	21 Feb 31	22 Feb 31
23 Feb 32	24 Feb 32	25 Feb 34	26 Feb 36	27 Feb 44	28 Feb 40	1 Mar 41

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 32	24 Feb 32	25 Feb 34	26 Feb 36	27 Feb 44	28 Feb 40	1 Mar 41
2 Mar 46	3 Mar 37	4 Mar 40	5 Mar 34	6 Mar 35	7 Mar 35	8 Mar 37
9 Mar 36	10 Mar 38	11 Mar 36	12 Mar 32	13 Mar 41	14 Mar 42	15 Mar 39
16 Mar 25	17 Mar 22	18 Mar 24	19 Mar 19	20 Mar 27	21 Mar 42	22 Mar 48
23 Mar 58	24 Mar 60	25 Mar 73	26 Mar 91	27 Mar 69	28 Mar 46	29 Mar 38
30 Mar 38	31 Mar 33	1 Apr 36	2 Apr 24	3 Apr 24	4 Apr 22	5 Apr 31

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 38	31 Mar 33	1 Apr 36	2 Apr 24	3 Apr 24	4 Apr 22	5 Apr 31
6 Apr 24	7 Apr 34	8 Apr 41	9 Apr 28	10 Apr 45	11 Apr 37	12 Apr 46
13 Apr 25	14 Apr 31	15 Apr 21	16 Apr 29	17 Apr 45	18 Apr 53	19 Apr 66
20 Apr 54	21 Apr 46	22 Apr 48	23 Apr 28	24 Apr 30	25 Apr 38	26 Apr 44
27 Apr 47	28 Apr 44	29 Apr 39	30 Apr 53	1 May 45	2 May 33	3 May 36

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 47	28 Apr 44	29 Apr 39	30 Apr 53	1 May 45	2 May 33	3 May 36
4 May 36	5 May 38	6 May 28	7 May 28	8 May 34	9 May 31	10 May 26
11 May 25	12 May 26	13 May 39	14 May 43	15 May 46	16 May 47	17 May 30
18 May 43	19 May 41	20 May 62	21 May 63	22 May 54	23 May 55	24 May 47
25 May 30	26 May -	27 May -	28 May -	29 May -	30 May -	31 May -

Health Advice For People Living In
Shimomura

0Cigarettes per day

Weekly 0 Cigarettes

Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Solutions for Current AQI

Air PurifierTurn Off
Car FilterAdvisable
N95 MaskAdvisable
Stay IndoorAdvisable

As per the current AQI, turn off the air purifier.

Prevent Health Problems: Understand Your Risks

Shimomura

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

Keep track of air quality to plan outdoor activities safely.
Drink water to keep airways moist and reduce irritation.
Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

Skip medications that is prescribed by your doctor.
Engage in outdoor activities in early morning during high pollen hours.

Most Polluted Cities 2025
Japan

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025

World's Most PollutedCity Rankings (2024)

World's Most PollutedCountry Rankings(2024)

RankCityAQIAQI Status

Standard Value

Honmachi, Japan

Yamaga, Japan

Iwashita, Japan

Ureshinomachi Shimojuku, Japan

Yashiki, Japan

Ogoshi, Japan

Sasaguri, Japan

Tamana, Japan

Takeocho Takeo, Japan

Moderate

3xabove Standard

10.

Yashima, Japan

Moderate

3xabove Standard

Last Updated: 26 May 2025, 10:35 AM

AQI City Rankings

Air Quality Solutions For Shimomura
Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for Shimomura

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Shimomura

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Shimomura

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Shimomura

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Shimomura's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at Shimomura

Frequently Asked Questions About Air Quality

What is the current AQI level in Shimomura?

The current real-time AQI level in Shimomura is 26 (Good). This was last updated 2025-05-26 04:54:17 PM (Local Time).

When was the best AQI level in Shimomura in the last 24 hours?

The best AQI level was 14 (Good) at 8:09 PM, May 25, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Shimomura in the last 24 hours?

The worst AQI level was 50 (Good) at 8:09 AM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Shimomura during last 24 hours?

The AQI levels in Shimomura have been fluctuating throughout the last 24 hours. The levels have increased by highest 50 at 8:09 AM (Local Time), lowest 14 at 8:09 PM, May 25, 2025 (Local Time).

What actions are recommended as per the current AQI level in Shimomura?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.