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OzonePM2.5PM10COSO2Temp   |  RH   |  WS   |  WD  

December 7, 2017

Current Max AQI
Ozone (8-hr average)
at 4 PM  
PM2.5 n/a  
PM10 n/a  
CO n/a  
SO2 n/a  
* Numbers in AQI
WS 4 mph at 12 PM
WD 271º at 12 PM
Temp 8ºC at 3 PM
RH 74% at 9 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)