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Good Moderate Unhealthy-Sensitive Groups Unhealthy Very Unhealthy Hazardous

Redwood City, CA - Air quality forecast  

Current PM2.5 40 Good
2018-12-15 PM2.5 68 Moderate  
     1 2 3 4 5 6
     Forecast issued at: Friday Dec 14 2018

Color codes explained

Good 0 to 50 Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate 51 to 100 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for Sensitive Groups 101 to 150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151 to 200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201 to 300 Health warnings of emergency conditions. The entire population is more likely to be affected.
Hazardous 301 to 500 Health alert: everyone may experience more serious health effects
Data originates from where you can find a wealth of information

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Citizen Weather Observer Program (CWOP)

Equipment we use:

Ambient WS-1400-IP



Ambient WS-1400-IP