Worst air pollution Billings, today and tomorrow
Today (16 July): Air quality in Billings is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (O3: 36.7/100).
Tomorrow (17 July 2026): Air quality in Billings is fair. AQI improves to medium; NO2 decreases to medium; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 47.5/100). 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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Billings's air quality reflects the Yellowstone River valley's partial topographic enclosure between the Rimrocks sandstone cliffs to the north and the Beartooth foothills to the south, with vehicle emissions from I-90 and the CHS Refinery — Montana's largest petroleum refinery — generating industrial SO₂ and PM2.5 alongside the primary vehicle sources. Winter temperature inversions in the valley can trap refinery and vehicle emissions under persistent cold-air pools, while summer wildfire smoke from the surrounding Montana and Wyoming forests is an increasingly frequent seasonal concern.
Today - 16 July | Pollution peaks at 05:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Fair
33.3/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
6.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
10.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
47.5/100
PM2.5 (fine particles):
Good
15.6/100
PM10 (coarse particles):
Good
5.7/100
NO2 (nitrogen dioxide):
Medium
47.5/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
13.8/100
Pollen forecast in Billings
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Frequently Asked Questions
Is air quality bad in Billings right now?
On 16 July 2026, overall air quality in Billings is fair. AQI is the main air quality indicator at 36.7/100. Pollution peaks around 5:00 AM (O3: 36.7/100).
Will air quality be worse tomorrow in Billings?
On 17 July 2026, air quality conditions in Billings will be similar to today, with O3 forecast at fair at 30.9/100. Pollution peaks around 11:00 PM (NO2: 47.5/100).
When is air pollution at its worst in Billings?
Conditions in Billings vary noticeably across the seasons. In short, a brief window in autumn tends to bring the year's best air, before winter inversions set in, whereas valley and basin locations can see pollution trapped under cold air for days during winter inversions. Valley and basin locations are especially prone to these winter inversion episodes compared to more exposed, higher terrain.
Are air quality levels in Billings 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