Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
160 people follow this city
Koyo Air Quality Map
Real-time Koyo air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Koyo today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Koyo?
| Weather | Broken clouds |
| Temperature | 73.4°F |
| Humidity | 46% |
| Wind | 1 mp/h |
| Pressure | 29.7 Hg |
live aqi city ranking
Real-time Japan city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Kofu, Yamanashi | 91 |
| 2 | Aioi, Hyogo | 63 |
| 3 | Akashi, Hyogo | 60 |
| 4 | Oita, Oita | 60 |
| 5 | Omuta, Fukuoka | 59 |
| 6 | Kakogawa, Hyogo | 58 |
| 7 | Okayama, Okayama | 57 |
| 8 | Ozu, Ehime | 57 |
| 9 | Shunan, Yamaguchi | 55 |
| 10 | Hiroshima, Hiroshima | 54 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
52*
live AQI index
Moderate
Overview
What is the current air quality in Koyo?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 52* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 12.4*µg/m³ | |
!
PM2.5
x2.5
PM2.5 concentration in Koyo is currently 2.5 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Koyo?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Koyo air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 52 AQI US |  100% | 73.4° 59° |  13.4 mp/h |
| Friday, Apr 26 | Moderate 54 AQI US | 40% | 69.8° 57.2° | 6.7 mp/h |
| Saturday, Apr 27 | Moderate 57 AQI US | 100% | 64.4° 57.2° | 6.7 mp/h |
| Sunday, Apr 28 | Moderate 59 AQI US |  | 77° 57.2° | 6.7 mp/h |
| Monday, Apr 29 | Moderate 63 AQI US | 70% | 73.4° 62.6° | 11.2 mp/h |
| Tuesday, Apr 30 | Moderate 60 AQI US | 100% | 62.6° 59° | 6.7 mp/h |
| Wednesday, May 1 | Moderate 63 AQI US | 100% | 66.2° 59° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Koyo?
No locations are available.
AQI US, Metric