Worst air pollution Fujisawa, today and tomorrow
Today (21 September): Air quality in Fujisawa is moderate. AQI and NO2 are moderate; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (NO2: 50.3/100).
Tomorrow (22 September 2026): Air quality in Fujisawa is moderate. PM2.5 increases to fair; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 2:00 PM (NO2: 51.3/100). 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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Fujisawa'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 Enoshima tourism, manufacturing, and residential corridor contribute local sources, while the outstanding Pacific coastal exposure generally maintains Fujisawa among Kanagawa's more moderately ventilated coastal cities and summer photochemical ozone from the broader Kanto corridor is the primary warm-season concern.
Today - 21 September | Pollution peaks at 15:00
AQI:
Moderate
50.3/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
13.9/100
NO2 (nitrogen dioxide):
Moderate
50.3/100
O3 (ozone):
Good
8.1/100
SO2 (sulfur dioxide):
Good
11.5/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
8.8/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 14:00
AQI:
Moderate
51.3/100
PM2.5 (fine particles):
Fair
24.6/100
PM10 (coarse particles):
Fair
22.2/100
NO2 (nitrogen dioxide):
Moderate
51.3/100
O3 (ozone):
Good
16.4/100
SO2 (sulfur dioxide):
Good
13.9/100
CO (carbon monoxide):
Good
1.6/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Good
12.3/100
Frequently Asked Questions
Is air quality bad in Fujisawa right now?
On 21 September 2026, overall air quality in Fujisawa is moderate. AQI is the main air quality indicator at 50.3/100. Pollution peaks around 3:00 PM (NO2: 50.3/100).
Will air quality be worse tomorrow in Fujisawa?
On 22 September 2026, air quality conditions in Fujisawa will be similar to today, with AQI forecast at moderate at 51.3/100. Pollution peaks around 2:00 PM (NO2: 51.3/100).
When is air pollution at its worst in Fujisawa?
In Fujisawa, traffic on the surrounding roads, heavy industry such as steel, cement, or petrochemical processing, as well as textile and manufacturing operations are the main local sources, with conditions worsening when warm, sunny weather takes hold. Heat and sunlight combine with emissions to form ozone at ground level. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Fujisawa 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: 22 September 2026 at 02:59 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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