Worst air pollution Custer, today and tomorrow
Today (16 July): Air quality in Custer is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 32.0/100).
Tomorrow (17 July 2026): Air quality in Custer is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 6:00 AM (O3: 29.1/100). 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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Custer's air quality is shaped largely by Black Hills forest air; typically clean air with excellent visibility across the hills. Day-to-day conditions in Custer can still vary with local weather, wind direction, and time of year. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 16 July | Pollution peaks at 08:00
AQI:
Fair
32.0/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
8.6/100
NO2 (nitrogen dioxide):
Good
19.1/100
O3 (ozone):
Fair
32.0/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
9.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Fair
29.1/100
PM2.5 (fine particles):
Good
11.4/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
25.9/100
O3 (ozone):
Fair
29.1/100
SO2 (sulfur dioxide):
Good
4.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
8.3/100
Pollen forecast in Custer
View pollen forecastFrequently Asked Questions
Is air quality bad in Custer right now?
On 16 July 2026, overall air quality in Custer is fair. AQI is the main air quality indicator at 32.0/100. Pollution peaks around 8:00 AM (O3: 32.0/100).
Will air quality be worse tomorrow in Custer?
On 17 July 2026, air quality conditions in Custer will be similar to today, with AQI forecast at fair at 29.1/100. Pollution peaks around 6:00 AM (O3: 29.1/100).
When is air pollution at its worst in Custer?
Custer's air quality has a clear seasonal rhythm. Typically, once the harvest dust settles, winter typically offers the cleanest stretch of the year, while spring planting and autumn harvest can push particulate levels up with dust and agricultural burning. Wide-open terrain generally helps disperse pollution quickly once the wind picks up.
Are air quality levels in Custer 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.
Want to see air quality forecasts for other cities in United States?
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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