Worst air pollution Honchō, today and tomorrow
Today (16 July): Air quality in Honchō is fair. PM2.5, NO2, and PM1 are fair; AQI and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 52.8/100).
Tomorrow (17 July 2026): Air quality in Honchō is fair. AQI worsens to fair; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 2:00 AM (PM1: 30.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Honchō in Saitama reflects the flat Saitama Minuma River plain adjacent to Tokyo, with vehicle traffic on surrounding roads and the manufacturing and 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 - 16 July | Pollution peaks at 13:00
AQI:
Medium
52.8/100
PM2.5 (fine particles):
Fair
23.5/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Fair
20.0/100
O3 (ozone):
Medium
52.8/100
SO2 (sulfur dioxide):
Good
10.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Fair
28.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 02:00
AQI:
Fair
30.4/100
PM2.5 (fine particles):
Fair
24.0/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Fair
22.1/100
O3 (ozone):
Good
15.4/100
SO2 (sulfur dioxide):
Good
16.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Fair
30.4/100
Frequently Asked Questions
Is air quality bad in Honchō right now?
On 16 July 2026, overall air quality in Honchō is fair. PM1 is the main pollutant at 28.9/100. Pollution peaks around 1:00 PM (O3: 52.8/100).
Will air quality be worse tomorrow in Honchō?
On 17 July 2026, air quality conditions in Honchō will be similar to today, with AQI forecast at fair at 30.4/100. Pollution peaks around 2:00 AM (PM1: 30.4/100).
When is air pollution at its worst in Honchō?
Honchō usually sees its poorest air quality when road traffic, steel, cement, and chemical production, and manufacturing activity coincide with periods when summer heat and strong sunlight build up. Heat and sunlight combine with emissions to form ozone at ground level. This is far less of an issue outside the warmer months.
Are air quality levels in 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app