Worst air pollution Guozhen, today and tomorrow
Today (15 August): Air quality in Guozhen is very poor. AQI and O3 are very poor; PM2.5 is fair; NO2 and PM1 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 90.1/100).
Tomorrow (16 August 2026): Air quality in Guozhen is very poor. PM2.5 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 90.2/100). 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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Guozhen's air quality reflects the Guanzhong Basin's Wei River valley in Shaanxi, with vehicle traffic on surrounding roads and agricultural and light manufacturing operations contributing local sources. The Guanzhong Basin's topographic enclosure creates concentration under winter inversions, while the Xi'an metropolitan regional background influences the broader western Guanzhong corridor throughout most of the year.
Today - 15 August | Pollution peaks at 15:00
AQI:
Very poor
90.1/100
PM2.5 (fine particles):
Fair
37.3/100
PM10 (coarse particles):
Good
10.5/100
NO2 (nitrogen dioxide):
Medium
48.4/100
O3 (ozone):
Very poor
90.1/100
SO2 (sulfur dioxide):
Good
11.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.9/100
PM1 (ultrafine particles):
Medium
41.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 August | Pollution peaks at 12:00
AQI:
Very poor
90.2/100
PM2.5 (fine particles):
Medium
41.5/100
PM10 (coarse particles):
Good
13.6/100
NO2 (nitrogen dioxide):
Medium
59.5/100
O3 (ozone):
Very poor
90.2/100
SO2 (sulfur dioxide):
Good
12.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.3/100
PM1 (ultrafine particles):
Medium
44.5/100
Frequently Asked Questions
Is air quality bad in Guozhen right now?
On 15 August 2026, overall air quality in Guozhen is very poor. AQI is the main air quality indicator at 90.1/100. Pollution peaks around 3:00 PM (O3: 90.1/100).
Will air quality be worse tomorrow in Guozhen?
On 16 August 2026, air quality conditions in Guozhen will be similar to today, with AQI forecast at very poor at 90.2/100. Pollution peaks around 12:00 PM (O3: 90.2/100).
When is air pollution at its worst in Guozhen?
In Guozhen, road traffic, textile and manufacturing operations, along with farming and agricultural processing are the main local sources, with conditions worsening when temperature inversions set in over the valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. This is most pronounced in winter, when inversions are more frequent.
Are air quality levels in Guozhen 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: 15 August 2026 at 14:26 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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