Worst air pollution Jurupa Valley, today and tomorrow
Today (20 September): Air quality in Jurupa Valley is moderate. AQI and PM10 are moderate; PM2.5 is fair; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (PM10: 42.1/100).
Tomorrow (21 September 2026): Air quality in Jurupa Valley is fair. AQI improves to fair; PM10 decreases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (PM10: 29.6/100). 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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Jurupa Valley's air quality reflects the Inland Empire basin's severe topographic enclosure, with vehicle emissions from I-15 and SR-60 and the surrounding industrial and logistics warehouse complex generating concentrated diesel PM2.5 from freight traffic. The San Gabriel and Jurupa hills create topographic variation, while the persistent basin inversion traps the combined vehicle and freight emissions throughout much of the year.
Today - 20 September | Pollution peaks at 09:00
AQI:
Moderate
42.1/100
PM2.5 (fine particles):
Fair
24.0/100
PM10 (coarse particles):
Moderate
42.1/100
NO2 (nitrogen dioxide):
Good
17.3/100
O3 (ozone):
Good
14.7/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.4/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 08:00
AQI:
Fair
29.6/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Fair
29.6/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Good
17.1/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
11.9/100
Pollen forecast in Jurupa Valley
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Jurupa Valley
Frequently Asked Questions
Is air quality bad in Jurupa Valley right now?
On 20 September 2026, overall air quality in Jurupa Valley is moderate. AQI is the main air quality indicator at 42.1/100. Pollution peaks around 9:00 AM (PM10: 42.1/100).
Will air quality be worse tomorrow in Jurupa Valley?
On 21 September 2026, air quality conditions in Jurupa Valley will be better than today, with AQI forecast at fair at 29.6/100. Pollution peaks around 8:00 AM (PM10: 29.6/100).
When is air pollution at its worst in Jurupa Valley?
Seasonal changes shape air quality across Jurupa Valley. In short, the shortest stretch of clean air usually falls in the wetter winter months, 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 Jurupa Valley 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 14:33 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.
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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