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OzonePM2.5PM10COSO2Temp   |  RH   |  WS   |  WD  

December 7, 2017

Current Max AQI
 43 
PM2.5 (24-hr average)
O3
 29 
at 3 PM  
PM2.5
 43 
at 12 AM  
PM10
 36 
at 10 AM  
CO n/a  
SO2
 1 
at 12 PM  
* Numbers in AQI
 
WS n/a  
WD n/a  
Temp 9ºC at 5 PM
RH 44% at 1 AM



Note: The Beltsville and Blackwater NWR monitors are operated by EPA CASTNET. Prior to 2011, the monitors did not follow EPA required quality checks for regulatory use.


Data are preliminary and subject to validation
AQI Conversion Charts:
Ozone  Particulate Matter (PM)