Worst air pollution Columbia Center Sky View Observatory - Seattle, today and tomorrow
Today (15 July): Air quality in Columbia Center Sky View Observatory is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 52.9/100).
Tomorrow (16 July 2026): Air quality in Columbia Center Sky View Observatory is fair. All pollutants stay as today. Pollution peaks around 4:00 AM (O3: 51.8/100). 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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Seattle's Columbia Center Sky View Observatory air quality reflects Seattle's dense downtown position, with vehicle traffic on the surrounding 5th Avenue corridor generating local street-level NOₓ. The observatory's 255-metre elevation places visitors well above the urban boundary layer in generally excellent upper-atmosphere conditions, while the Puget Sound maritime influence provides clean background ventilation and the elevated observatory position generally maintains outstanding conditions far above the street-level readings throughout most of the year.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
52.9/100
PM2.5 (fine particles):
Good
14.8/100
PM10 (coarse particles):
Good
5.4/100
NO2 (nitrogen dioxide):
Fair
37.5/100
O3 (ozone):
Medium
52.9/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.5/100
PM1 (ultrafine particles):
Good
18.2/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
12.6/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Fair
27.8/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.5/100
PM1 (ultrafine particles):
Good
15.4/100
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Frequently Asked Questions
Is air quality bad in Columbia Center Sky View Observatory right now?
On 15 July 2026, overall air quality in Columbia Center Sky View Observatory is fair. NO2 is the main pollutant at 37.5/100. Pollution peaks around 7:00 AM (O3: 52.9/100).
Will air quality be worse tomorrow in Columbia Center Sky View Observatory?
On 16 July 2026, air quality conditions in Columbia Center Sky View Observatory will be similar to today, with NO2 forecast at fair at 27.8/100. Pollution peaks around 4:00 AM (O3: 51.8/100).
When is air pollution at its worst in Columbia Center Sky View Observatory?
This landmark in Seattle sees air quality shift through the year — the wet winter and spring months are generally the cleanest, with regular rain limiting particulate buildup, whereas August and September wildfire smoke can dominate the season, occasionally driving particulate levels sharply higher for several days. Prevailing onshore winds usually keep pollution moving rather than letting it settle.
Are air quality levels in Columbia Center Sky View Observatory 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