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Hourly forecast
Lyon Canyon, Castro Valley air quality index (AQI⁺) forecast
Daily forecast
Lyon Canyon, Castro Valley air quality index (AQI⁺) forecast
| Today | 31 |  | 22° 13° |  19 km/h |  77% |
| Wed | 42 | | 23° 11° | 20 km/h | 72% |
| Thu | 23 | | 27° 13° | 16 km/h | 55% |
Air pollutants
What is the current air quality near Lyon Canyon?
PM2.5 concentration currently meets the WHO annual PM2.5 guideline.
Health recommendations
 Enjoy outdoor activities |
 Open your windows to bring clean, fresh air indoors Get a monitor |
Real-time Lyon Canyon, Castro Valley air pollution map
Pollen
What is the pollen count in Lyon Canyon today?
Index
High
 Tree Low | 25% |
 Grass Moderate | 50% |
 Weed High | 75% |
Source:
wetter.comProtect yourself from air pollution in Lyon Canyon
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Pollen
What is the pollen count in Lyon Canyon today?
Index
High
Tree Low | 25% |
Grass Moderate | 50% |
Weed High | 75% |
Source:
wetter.comHistoric air quality near Lyon Canyon
History
Historic air quality graph for Lyon Canyon
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Most polluted locations near Lyon Canyon, Castro Valley
Worldwide AQI⁺ ranking
Station ranking
Real-time Lyon Canyon AQI⁺ station ranking
City ranking
Real-time USA AQI⁺ city ranking
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