Worst air pollution Chigasaki, today and tomorrow
Today (10 August): Air quality in Chigasaki is poor. AQI and O3 are poor; NO2 and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 68.1/100).
Tomorrow (11 August 2026): Air quality in Chigasaki is fair. AQI improves to fair; NO2 decreases to good; O3 decreases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 30.9/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Chigasaki's air quality benefits from its exceptional Sagami Bay and Pacific Ocean coastal position in Kanagawa Prefecture, with consistent Pacific and Sagami Bay maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the manufacturing, surfing tourism, and residential corridor contribute local sources, while the outstanding Pacific coastal exposure generally maintains Chigasaki among Kanagawa's more moderately ventilated coastal cities and summer photochemical ozone from the broader Kanto corridor is the primary warm-season concern.
Today - 10 August | Pollution peaks at 15:00
AQI:
Poor
68.1/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
20.3/100
O3 (ozone):
Poor
68.1/100
SO2 (sulfur dioxide):
Good
10.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.1/100
PM1 (ultrafine particles):
Fair
23.6/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 15:00
AQI:
Fair
30.9/100
PM2.5 (fine particles):
Good
6.0/100
PM10 (coarse particles):
Good
1.9/100
NO2 (nitrogen dioxide):
Good
16.4/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
7.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Good
6.4/100
Frequently Asked Questions
Is air quality bad in Chigasaki right now?
On 10 August 2026, overall air quality in Chigasaki is poor. AQI is the main air quality indicator at 68.1/100. Pollution peaks around 3:00 PM (O3: 68.1/100).
Will air quality be worse tomorrow in Chigasaki?
On 11 August 2026, air quality conditions in Chigasaki will be better than today, with AQI forecast at fair at 30.9/100. Pollution peaks around 3:00 PM (O3: 30.9/100).
When is air pollution at its worst in Chigasaki?
In Chigasaki, traffic emissions, steel, cement, and chemical production, together with manufacturing activity are the main local sources, with conditions worsening when warm, sunny weather takes hold. Photochemical reactions in the heat push ozone levels higher. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Chigasaki 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.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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