N.C. Department of Environment and Natural Resources
 Welcome to the North Carolina Division of Air Quality
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM AIR QUALITY SUMMARY REPORT



Mar. 15, 2012



MSA: Not in a MSA MAR 2011 APR 2011



01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 44 42 48 47 38 46 61 41 28 31 30 43 43 51 51 42 42 47 64 48 39 31 26 37 33 25 28 40 47 44 F S U M T W H F S U M T W H F S U M T W H F S U M T W H F S



YEAR: 2011



MAY 2011



42 45 38 40 38 45 44 37 44 47 42 26 34 26 36 30 32 35 36 42 47 46 37 41 47 44 33 36 35 42 48 U M T W H F S U M T W H F S U M T W H F S U M T W H F S U M T



JUN 2011



49 67 74 84 45 71 58 119 48 49 50 45 45 45 41 58 77 54 39 45 46 49 31 51 42 45 61 45 54 74 W H F S U M T W H F S U M T W H F S U M T W H F S U M T W H



JUL 2011



93 64 67 42 39 43 44 36 45 44 42 87 54 36 37 37 31 48 42 48 54 93 46 36 36 44 58 61 64 58 34 F S U M T W H F S U M T W H F S U M T W H F S U M T W H F S U



AUG 2011



61 54 74 54 37 37 47 47 47 48 71 48 38 42 47 50 46 61 51 48 42 40 44 42 41 22 32 43 36 40 48 M T W H F S U M T W H F S U M T W H F S U M T W H F S U M T W



SEP 2011



54 90 64 47 31 14 36 41 49 42 45 48 48 50 51 20 14 28 27 31 21 20 21 22 19 33 31 40 42 36 H F S U M T W H F S U M T W H F S U M T W H F S U M T W H F



OCT 2011



25 30 28 31 35 33 36 41 33 43 32 25 22 34 36 37 54 47 25 17 25 26 33 38 36 47 48 20 26 31 30 S U M T W H F S U M T W H F S U M T W H F S U M T W H F S U M



D A Y O F M O N T H



21 H



No. of Days with AQI Values: Highest AQI/YR = Days CO =0



Good < or = 50 175 119



Moderate 51-100 39 Unhealthy for Sensitive Groups 101-150 1 Unhealthy 151-200 0 Very Unhealthy 201-300 0 ------Hazardous----->301 0



Total Days with AQI Values = 215



Days O3 = 215 Days SO2 =0 Days NO2 = 0 Days PM2.5 = 0 Days PM10 = 0



Page 1 of 2





UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM AIR QUALITY SUMMARY REPORT



Mar. 15, 2012



MSA: Raleigh-Durham-Chapel Hill,NC JAN 2011 FEB 2011 MAR 2011



01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 60 23 27 45 41 42 40 27 28 29 36 34 31 44 57 48 55 43 36 28 31 36 65 52 60 21 44 53 38 51 57 S U M T W H F S U M T W H F S U M T W H F S U M T W H F S U M 52 26 28 31 21 34 54 31 27 31 52 35 42 40 25 59 64 55 39 36 31 26 37 40 33 35 57 33 T W H F S U M T W H F S U M T W H F S U M T W H F S U M 35 36 34 33 32 26 36 35 29 26 32 37 47 35 31 31 35 51 40 36 39 49 42 35 37 39 31 40 52 32 24 T W H F S U M T W H F S U M T W H F S U M T W H F S U M T W H



APR 2011



42 44 47 47 37 46 58 57 34 33 39 44 42 61 58 37 42 51 71 44 39 35 34 40 36 22 26 36 47 47 F S U M T W H F S U M T W H F S U M T W H F S U M T W H F S



MAY 2011



45 47 46 40 41 47 47 43 50 64 69 70 37 37 51 40 35 41 42 47 51 50 49 47 61 55 35 34 36 48 80 U M T W H F S U M T W H F S U M T W H F S U M T W H F S U M T



JUN 2011



132 122 100 97 67 100 93 109 97 100 51 51 55 48 51 74 80 77 42 48 137 42 31 58 58 71 49 49 58 97 W H F S U M T W H F S U M T W H F S U M T W H F S U M T W H



JUL 2011



109 90 72 59 64 62 51 51 44 59 61 90 104 46 41 43 43 47 80 84 93 87 59 44 40 46 87 67 93 84 36 F S U M T W H F S U M T W H F S U M T W H F S U M T W H F S U



AUG 2011



87 93 97 93 51 42 51 58 61 77 84 64 49 41 47 80 58 61 50 58 40 53 51 45 59 28 31 58 71 39 49 M T W H F S U M T W H F S U M T W H F S U M T W H F S U M T W



SEP 2011



97 97 64 45 39 20 39 77 48 47 47 71 74 84 48 21 18 29 28 31 25 27 17 25 21 31 32 42 43 42 H F S U M T W H F S U M T W H F S U M T W H F S U M T W H F



YEAR: OCT 2011



26 31 30 31 36 34 38 41 34 41 35 25 25 34 36 38 47 44 25 19 28 30 37 45 40 50 58 21 25 32 24 S U M T W H F S U M T W H F S U M T W H F S U M T W H F S U M



D A Y O F M O N T H



2011 NOV 2011 31 46 37 33 26 27 26 42 34 29 29 37 36 30 29 32 25 33 54 47 48 62 26 33 52 40 30 28 27 19



DEC 2011



26 45 41 37 35 21 23 25 34 31 28 28 37 39 34 24 27 46 41 55 27 24 23 26 37 24 24 19 30 33 28 H F S U M T W H F S U M T W H F S U M T W H F S U M T W H F S T W H F S U M T W H F S U M T W H F S U M T W H F S U M T W



No. of Days with AQI Values: Highest AQI/YR = Days CO =0



Good < or = 50 257 137



Moderate 51-100 102 Unhealthy for Sensitive Groups 101-150 6 Unhealthy 151-200 0 Very Unhealthy 201-300 0 ------Hazardous----->301 0



Total Days with AQI Values = 365



Days O3 = 219 Days SO2 =0 Days NO2 = 0 Days PM2.5 = 146 Days PM10 = 0



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