Worst air pollution Golden, today and tomorrow
Today (16 July): Air quality in Golden is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 35.5/100).
Tomorrow (17 July 2026): Air quality in Golden is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 48.7/100). 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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Golden's air quality reflects its deep mountain-valley position, where winter temperature inversions can trap wood-heating smoke and Trans-Canada Highway truck traffic emissions.
Today - 16 July | Pollution peaks at 07:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Good
10.1/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
10.8/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
9.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Good
13.2/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
10.4/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
13.4/100
Pollen forecast in Golden
View pollen forecastFrequently Asked Questions
Is air quality bad in Golden right now?
On 16 July 2026, overall air quality in Golden is fair. AQI is the main air quality indicator at 35.5/100. Pollution peaks around 7:00 AM (O3: 35.5/100).
Will air quality be worse tomorrow in Golden?
On 17 July 2026, air quality conditions in Golden will be better than today, with AQI forecast at medium at 48.7/100. Pollution peaks around 9:00 AM (O3: 48.7/100).
When is air pollution at its worst in Golden?
Golden's air quality is closely linked to its mountain valley setting between the Rockies and the Selkirks. For most of the year the air stays clean and lake-fresh, but summer tourist traffic and, in some years, drifting wildfire smoke can briefly worsen conditions. Weekday air quality is often noticeably better than on busy summer weekends when visitor numbers peak.
Are air quality levels in Golden 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