Worst air pollution Longba, today and tomorrow
Today (16 July): Air quality in Longba is medium. AQI, PM2.5, NO2, O3, and PM1 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 11:00 AM (O3: 57.6/100).
Tomorrow (17 July 2026): Air quality in Longba is fair. PM2.5 decreases to good; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 45.2/100). 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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Longba's air quality reflects the Gansu Bailong River valley's partial enclosure in the southern Gansu mountainous corridor at the Sichuan border, with vehicle traffic on surrounding roads and agricultural and forestry operations contributing modest local sources. The surrounding Qinling and Minshan mountain ranges create significant topographic variation, while the relatively low industrial density generally maintains moderate to good northwestern China southern mountain valley readings throughout most of the year.
Today - 16 July | Pollution peaks at 11:00
AQI:
Medium
57.6/100
PM2.5 (fine particles):
Medium
41.6/100
PM10 (coarse particles):
Good
17.3/100
NO2 (nitrogen dioxide):
Medium
40.9/100
O3 (ozone):
Medium
57.6/100
SO2 (sulfur dioxide):
Good
15.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.3/100
PM1 (ultrafine particles):
Medium
43.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
45.2/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
6.8/100
NO2 (nitrogen dioxide):
Medium
45.2/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Good
14.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.1/100
PM1 (ultrafine particles):
Good
14.9/100
Frequently Asked Questions
Is air quality bad in Longba right now?
On 16 July 2026, overall air quality in Longba is medium. AQI is the main air quality indicator at 57.6/100. Pollution peaks around 11:00 AM (O3: 57.6/100).
Will air quality be worse tomorrow in Longba?
On 17 July 2026, air quality conditions in Longba will be worse than today, with O3 forecast at fair at 29.2/100. Pollution peaks around 11:00 PM (NO2: 45.2/100).
When is air pollution at its worst in Longba?
Air quality in Longba tends to be worse when vehicle traffic as well as agricultural activity build up and dry spells bring strong winds. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. These episodes tend to cluster in spring and autumn.
Are air quality levels in Longba 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