Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Koshu
Air quality index (AQI) and PM2.5 air pollution in Koshu
2 people follow this city
Koshu Air Quality Map
Real-time Koshu air pollution map
AIR QUALITY DATA CONTRIBUTORS
2 Contributors
See all
Pollen
What is the pollen count in Koshu today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Koshu?
| Weather | Rain |
| Temperature | 53.6°F |
| Humidity | 99% |
| Wind | 2.5 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time Japan city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Amakusa, Kumamoto | 71 |
| 2 | Iwaki, Fukushima | 61 |
| 3 | Nagasaki, Nagasaki | 57 |
| 4 | Sasebo, Nagasaki | 56 |
| 5 | Tsuchiura, Ibaraki | 56 |
| 6 | Oita, Oita | 55 |
| 7 | Ube, Yamaguchi | 55 |
| 8 | Kamisu, Ibaraki | 53 |
| 9 | Mukaihibi, Okayama | 53 |
| 10 | Nagareyama, Chiba | 53 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Koshu aqi ranking
Real-time Koshu air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Higashiyamanashi | 27 |
(local time)
SEE WORLD AQI RANKING
US AQI
27
live AQI index
Good
Overview
What is the current air quality in Koshu?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 27 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5µg/m³ | |
| PM10 | 7µg/m³ | |
| NO2 | 1.9µg/m³ | |
✓
PM2.5 concentration in Koshu air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Koshu?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Koshu air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Friday, May 10 | Moderate 68 AQI US  |  | 68° 39.2° |  4.5 mp/h |
| Saturday, May 11 | Moderate 73 AQI US | | 73.4° 50° | 6.7 mp/h |
| Sunday, May 12 | Good 44 AQI US |  | 69.8° 46.4° | 6.7 mp/h |
| Today | Good 27 AQI US | | 69.8° 46.4° | 6.7 mp/h |
| Tuesday, May 14 | Good 48 AQI US | 100% | 62.6° 53.6° | 4.5 mp/h |
| Wednesday, May 15 | Moderate 58 AQI US | 30% | 68° 53.6° | 4.5 mp/h |
| Thursday, May 16 | Moderate 59 AQI US | | 69.8° 51.8° | 4.5 mp/h |
| Friday, May 17 | Moderate 60 AQI US | 50% | 69.8° 50° | 8.9 mp/h |
| Saturday, May 18 | Moderate 68 AQI US | | 71.6° 44.6° | 4.5 mp/h |
| Sunday, May 19 | Moderate 71 AQI US | | 73.4° 50° | 4.5 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Koshu air quality data attribution
2Contributors
2 Government Contributors
Where is the cleanest air quality in Koshu?
AQI US, Metric