Kasuga Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (15 October): Air quality in Kasuga is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM2.5: 41.4/100).
Air Quality Tomorrow
Tomorrow (16 October 2026): Air quality in Kasuga is fair. PM10 increases to fair; NO2 increases to fair; O3 decreases to good; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 AM (PM2.5: 43.0/100).
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Air Quality
Today - 15 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 28.3/100 |
| PM2.5 (fine particles) | Fair | 24.3/100 |
| PM10 (coarse particles) | Good | 19.5/100 |
| NO2 (nitrogen dioxide) | Good | 18.8/100 |
| O3 (ozone) | Fair | 20.8/100 |
| SO2 (sulfur dioxide) | Good | 6.0/100 |
| CO (carbon monoxide) | Good | 1.0/100 |
| HCHO (formaldehyde) | Good | 2.4/100 |
| PM1 (ultrafine particles) | Good | 17.1/100 |
Tomorrow - 16 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 36.4/100 |
| PM2.5 (fine particles) | Fair | 33.4/100 |
| PM10 (coarse particles) | Fair | 27.3/100 |
| NO2 (nitrogen dioxide) | Fair | 27.2/100 |
| O3 (ozone) | Good | 18.4/100 |
| SO2 (sulfur dioxide) | Good | 10.1/100 |
| CO (carbon monoxide) | Good | 1.3/100 |
| HCHO (formaldehyde) | Good | 4.1/100 |
| PM1 (ultrafine particles) | Fair | 25.1/100 |
Local Environmental Conditions
The center of Kasuga is largely built up, so vehicle exhaust and urban activity dominate the local air pollution sources. Local sources include industry. At times, pollution carried across from mainland Asia also affects air quality here. In cold weather, wood burning and other home heating become a noticeable source of fine particles.
Hot afternoons from June to September, averaging 27°C in the warmest month, are when ozone is most likely to build up. From December to February, temperatures near 4°C, with winds of around 10 km/h, let smoke and particles from home heating and traffic build up, especially on cold, still mornings. At times, pollution carried across from mainland Asia also affects air quality.
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Frequently Asked Questions About Air Quality in Fukuoka
Is air quality bad in Kasuga right now?
On 15 October 2026, overall air quality in Kasuga is fair. AQI is the main air quality indicator at 28.3/100. Pollution peaks around 11:00 PM (PM2.5: 41.4/100).
Will air quality be worse tomorrow in Kasuga?
On 16 October 2026, air quality conditions in Kasuga will be similar to today, with AQI forecast at fair at 36.4/100. Pollution peaks around 7:00 AM (PM2.5: 43.0/100).
When is air pollution at its worst in Kasuga?
Hot afternoons from June to September, averaging 27°C in the warmest month, are when ozone is most likely to build up. From December to February, temperatures near 4°C, with winds of around 10 km/h, let smoke and particles from home heating and traffic build up, especially on cold, still mornings. At times, pollution carried across from mainland Asia also affects air quality.
Are air quality levels in Kasuga based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |