The Community Multiscale Air Quality (CMAQ) Model is produced by the National Centers for Environmental Prediction (NCEP) and is provided to the Environment Protection Agency (EPA).

WMO Headings have the format of T1T2A1A2ii CCCC.

The CCCC for all CMAQ product WMO headings is KWBP.

The T1 for all CMAQ product WMO headings is Z.

CMAQ Data Type Designator (T2)

            L = 8-hour Backward Average

            M = 1-hour Backward Average

            N = 8-hour Averaged Categorical Ozone Concentration

            O = 1-hour Averaged Categorical Ozone Concentration

CMAQ Time Designator (A1A2)

            AA= 0-Hour Forecast

            AB= 1-Hour Forecast

            AC= 2-Hour Forecast

            AD= 3-hour Forecast

            AE= 4-Hour Forecast

            AF= 5-Hour Forecast

            AG= 6-Hour Forecast

            AH= 7-Hour Forecast

            AI= 8-Hour Forecast

            AJ= 9-Hour Forecast

            AK= 10-Hour Forecast

            AL= 11-Hour Forecast

            AM= 12-Hour Forecast

            AN= 13-Hour Forecast

            AO= 14-Hour Forecast

            AP= 15-Hour Forecast

            AQ= 16-Hour Forecast

            AR= 17-Hour Forecast

            AS= 18-Hour Forecast

            AT= 19-Hour Forecast

            AU= 20-Hour Forecast

            AV= 21-Hour Forecast

            AW= 22-Hour Forecast

            AX= 23-Hour Forecast

            AY= 24-Hour Forecast

            AZ= 25-Hour Forecast

            BA= 26-Hour Forecast

            BB= 27-Hour Forecast

            BC= 28-Hour Forecast

            BD= 29-Hour Forecast

            BE= 30-Hour Forecast

            BF= 31-Hour Forecast

            BG= 32-Hour Forecast

            BH= 33-Hour Forecast

            BI= 34-Hour Forecast

            BJ= 35-Hour Forecast

            BK= 36-Hour Forecast

            BL= 37-Hour Forecast

            BM= 38-Hour Forecast

            BN= 39-Hour Forecast

            BO= 40-Hour Forecast

            BP= 41-Hour Forecast

            BQ= 42-Hour Forecast

            BR= 43-Hour Forecast

            BS= 44-Hour Forecast

            BT= 45-Hour Forecast

            BU= 46-Hour Forecast

            BV= 47-Hour Forecast

            BW= 48-Hour Forecast

CMAQ Area Designator (ii)

            0-9 = Global

            10-19 = Regional

            20-29 = CONUS

            30-39 = OCONUS

            40-99 = National (41 = Northeast)