NCore
NCore means the National Core multipollutant monitoring stations. Monitors at these sites are required to measure particles (PM2.5 speciated PM2.5, PM102.5), O3, SO2, CO, nitrogen oxides (NO/NOy), and meteorology (wind speed, wind direction, temperature, relative humidity).
Source
40 CFR § 58.1
Scoping language
As used in this part, all terms not defined herein have the meaning given them in the Clean Air Act.