Worst air pollution Hatogaya-honchō, today and tomorrow
Today (10 August): Air quality in Hatogaya-honchō is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 38.3/100).
Tomorrow (11 August 2026): Air quality in Hatogaya-honchō is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 45.1/100). 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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Hatogaya-honchō in Saitama reflects the flat Saitama southern Shiotsuma River adjacent to Tokyo, with vehicle traffic on surrounding roads and the manufacturing and dense residential character contributing local sources. The flat Kanto Plain allows reasonable dispersal, while the broader Tokyo metropolitan regional emissions elevate background and summer photochemical ozone is the primary warm-season concern and the area generally maintains moderate Tokyo northern Saitama suburban readings throughout most of the year.
Today - 10 August | Pollution peaks at 11:00
AQI:
Fair
38.3/100
PM2.5 (fine particles):
Good
11.7/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Fair
21.8/100
O3 (ozone):
Fair
38.3/100
SO2 (sulfur dioxide):
Good
12.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.3/100
PM1 (ultrafine particles):
Good
14.5/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 13:00
AQI:
Medium
45.1/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Fair
24.8/100
O3 (ozone):
Medium
45.1/100
SO2 (sulfur dioxide):
Good
13.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.5/100
PM1 (ultrafine particles):
Good
10.8/100
Frequently Asked Questions
Is air quality bad in Hatogaya-honchō right now?
On 10 August 2026, overall air quality in Hatogaya-honchō is fair. AQI is the main air quality indicator at 38.3/100. Pollution peaks around 11:00 AM (O3: 38.3/100).
Will air quality be worse tomorrow in Hatogaya-honchō?
On 11 August 2026, air quality conditions in Hatogaya-honchō will be similar to today, with NO2 forecast at fair at 24.8/100. Pollution peaks around 1:00 PM (O3: 45.1/100).
When is air pollution at its worst in Hatogaya-honchō?
Hatogaya-honchō usually sees its poorest air quality when traffic on the surrounding roads, steel, cement, and chemical production, along with manufacturing activity coincide with periods when hot, still weather settles in. Photochemical reactions in the heat push ozone levels higher. This is far less of an issue outside the warmer months.
Are air quality levels in Hatogaya-honchō 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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