Worst air pollution Aquarium of the Pacific - Long Beach, today and tomorrow
Today (20 September): Air quality in Aquarium of the Pacific is moderate. AQI, PM2.5, and PM10 are moderate; O3 is fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (PM10: 51.9/100).
Tomorrow (21 September 2026): Air quality in Aquarium of the Pacific is moderate. All pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 45.0/100). Airmine updates local air quality forecasts four times daily.
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Aquarium of the Pacific sits at an aquarium building on the downtown waterfront; air quality here tracks closely with the wider Long Beach area and the same regional influences that shape it. Any local variation tends to be minor compared with the seasonal swings seen across the wider city.
Today - 20 September | Pollution peaks at 10:00
AQI:
Moderate
51.9/100
PM2.5 (fine particles):
Moderate
44.7/100
PM10 (coarse particles):
Moderate
51.9/100
NO2 (nitrogen dioxide):
Good
11.3/100
O3 (ozone):
Fair
24.2/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.4/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
2.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 00:00
AQI:
Moderate
45.0/100
PM2.5 (fine particles):
Moderate
42.6/100
PM10 (coarse particles):
Moderate
45.0/100
NO2 (nitrogen dioxide):
Good
5.9/100
O3 (ozone):
Fair
28.0/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
2.6/100
Other Landmarks in Long Beach
Frequently Asked Questions
Is air quality bad in Aquarium of the Pacific right now?
On 20 September 2026, overall air quality in Aquarium of the Pacific is moderate. AQI is the main air quality indicator at 51.9/100. Pollution peaks around 10:00 AM (PM10: 51.9/100).
Will air quality be worse tomorrow in Aquarium of the Pacific?
On 21 September 2026, air quality conditions in Aquarium of the Pacific will be similar to today, with AQI forecast at moderate at 45.0/100. Pollution peaks around 12:00 AM (PM10: 45.0/100).
When is air pollution at its worst in Aquarium of the Pacific?
Aquarium of the Pacific experiences the same seasonal air quality swings as the rest of Long Beach — winter rains provide the only real relief from an otherwise persistent haze, whereas hot, sunny summer conditions drive persistent ozone problems, compounded by wildfire smoke risk into early autumn. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Aquarium of the Pacific 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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