Rancho Cucamonga, CA Air Quality

ZIP 91730 · As of 8:33 PM
Air quality index45Good

Air quality is great — a good day to be outside.

Next 24 hours

US AQI
  1. 44Now
  2. 45
  3. 44
  4. 4411 PM
  5. 43
  6. 44
  7. 442 AM
  8. 45
  9. 44
  10. 445 AM
  11. 43
  12. 43
  13. 438 AM
  14. 43
  15. 44
  16. 4611 AM
  17. 47
  18. 36
  19. 252 PM
  20. 14
  21. 15
  22. 165 PM
  23. 18
  24. 26

Air quality outlook

Worst hour each day
  • Today45Good
  • Sat 1747Good
  • Sun 1859Moderate
  • Mon 1998Moderate
  • Tue 2059Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About Rancho Cucamonga weather

Rancho Cucamonga is in San Bernardino County, California, United States at 34.11°, -117.59°. Right now it’s 86° and mostly clear; today’s high is 90° with a 1% chance of rain.

California encompasses an extraordinary range of climates, from the Mediterranean coast to alpine peaks, scorching deserts, and temperate rainforests. The state's Central Valley is one of the most productive agricultural regions in the world, benefiting from warm, dry summers and mild, wet winters. Death Valley holds the record for the highest reliably recorded air temperature on Earth at 134 degrees Fahrenheit.

Rancho Cucamonga weather by ZIP code

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