Worst air pollution Hitachi, today and tomorrow
Today (10 August): Air quality in Hitachi is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (O3: 22.3/100).
Tomorrow (11 August 2026): Air quality in Hitachi is fair. All pollutants stay as today. Pollution peaks around 8:00 PM (O3: 23.5/100). 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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Hitachi's air quality reflects the Ibaraki Prefecture Pacific Ocean coastal position, with consistent Pacific maritime breezes providing reliable ventilation along the Hitachi seacoast. Vehicle traffic on surrounding roads and the Hitachi Ltd. manufacturing complex — the city being the birthplace of Hitachi Corporation — generating elevated industrial and electrical machinery emissions alongside vehicle sources. The outstanding Pacific coastal exposure and the Abukuma highlands rising inland create topographic variation and Hitachi generally maintains moderate to good coastal industrial readings throughout most of the year.
Today - 10 August | Pollution peaks at 22:00
AQI:
Fair
22.3/100
PM2.5 (fine particles):
Good
5.2/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
22.3/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
2.2/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 20:00
AQI:
Fair
23.5/100
PM2.5 (fine particles):
Good
5.4/100
PM10 (coarse particles):
Good
1.4/100
NO2 (nitrogen dioxide):
Good
16.0/100
O3 (ozone):
Fair
23.5/100
SO2 (sulfur dioxide):
Good
5.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Good
7.8/100
Frequently Asked Questions
Is air quality bad in Hitachi right now?
On 10 August 2026, overall air quality in Hitachi is fair. AQI is the main air quality indicator at 22.3/100. Pollution peaks around 10:00 PM (O3: 22.3/100).
Will air quality be worse tomorrow in Hitachi?
On 11 August 2026, air quality conditions in Hitachi will be similar to today, with AQI forecast at fair at 23.5/100. Pollution peaks around 8:00 PM (O3: 23.5/100).
When is air pollution at its worst in Hitachi?
Pollution in Hitachi typically rises when traffic on the surrounding roads as well as textile and manufacturing operations combine, especially once windblown dust events occur. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Hitachi 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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