AQSQID: 450450015

Site Name: Greenville-Esc

Location: Greenville, SC

Reporting: True, Located: True

Current AQI: 40.0

Greenville SC, US: 34.843899, -82.414597

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 26, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 9.5 μg/m3 (40) 40.0
 
March 26, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 12.3 μg/m3 (51) 51.0
 
March 26, 2019, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 13.0 μg/m3 (52) 52.0
 
March 26, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 11.0 μg/m3 (46) 46.0
 
March 26, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 9.1 μg/m3 (38) 38.0
 
March 26, 2019, 2 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) 6.3 μg/m3 (26) 26.0
 
March 26, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 8.1 μg/m3 (34) 34.0
 
March 26, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 12.2 μg/m3 (50) 50.0
 
March 25, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 11.8 μg/m3 (49) 49.0
 
March 25, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 12.4 μg/m3 (51) 51.0
 
March 25, 2019, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
March 25, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 13.9 μg/m3 (54) 54.0
 
March 25, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (25) 15.8 μg/m3 (58) 58.0
 
March 25, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 16.9 μg/m3 (60) 60.0
 
March 25, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 26.0 μg/m3 (24) 12.7 μg/m3 (51) 51.0
 
March 25, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 17.7 μg/m3 (62) 62.0
 
March 25, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 18.4 μg/m3 (64) 64.0
 
March 25, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
March 25, 2019, 1 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 11.8 μg/m3 (49) 49.0
 
March 25, 2019, noon N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
March 25, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
March 25, 2019, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 9.9 μg/m3 (41) 41.0
 
March 25, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 12.2 μg/m3 (50) 50.0
 
March 25, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 13.5 μg/m3 (53) 53.0
 
March 25, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 17.6 μg/m3 (62) 62.0
 
March 25, 2019, 6 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 15.2 μg/m3 (57) 57.0
 
March 25, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 25, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (24) 17.3 μg/m3 (61) 61.0
 
March 25, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) N/A N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
March 25, 2019, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 15.1 μg/m3 (57) 57.0
 
March 25, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 10.9 μg/m3 (45) 45.0
 
March 24, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 10.1 μg/m3 (42) 42.0
 
March 24, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
March 24, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
March 24, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 5.8 μg/m3 (24) 24.0
 
March 24, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 10.8 μg/m3 (45) 45.0
 
March 24, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) N/A 18.0
 
March 24, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) N/A 18.0
 
March 24, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 11.6 μg/m3 (48) 48.0
 
March 24, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 17.4 μg/m3 (61) 61.0
 
March 24, 2019, noon N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 17.6 μg/m3 (62) 62.0
 
March 24, 2019, 11 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 19.2 μg/m3 (65) 65.0
 
March 24, 2019, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 18.1 μg/m3 (63) 63.0
 
March 24, 2019, 9 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (25) 25.5 μg/m3 (79) 79.0
 
March 24, 2019, 8 a.m. N/A N/A N/A 28.0 ppb (26) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 28.0 μg/m3 (84) 84.0
 
March 24, 2019, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (24) 20.8 μg/m3 (69) 69.0
 
March 24, 2019, 6 a.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) N/A N/A 39.0 μg/m3 (35) 32.7 μg/m3 (94) 94.0
 
March 24, 2019, 5 a.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) N/A N/A 22.0 μg/m3 (20) 23.6 μg/m3 (75) 75.0
 
March 24, 2019, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 11.5 μg/m3 (48) 48.0
 
March 24, 2019, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 13.8 μg/m3 (54) 54.0
 
March 24, 2019, 1 a.m. N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
March 24, 2019, midnight N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
March 23, 2019, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
March 23, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 1.7 μg/m3 (7) 7.0
 
March 23, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 2.6 μg/m3 (11) 11.0
 
March 23, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 6.0
 
March 23, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) N/A 2.0
 
March 23, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) N/A 2.0
 
March 23, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) N/A 3.0
 
March 23, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 1.0 μg/m3 (1) N/A 2.0
 
March 23, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) N/A 3.0
 
March 23, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) 3.0 μg/m3 (12) 12.0
 
March 23, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
March 23, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
March 23, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 16.0
 
March 23, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
March 23, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 7.2 μg/m3 (30) 30.0
 
March 23, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
March 23, 2019, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
March 23, 2019, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
March 23, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 15.0
 
March 23, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
March 23, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 7.4 μg/m3 (31) 31.0
 
March 23, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
March 22, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
March 22, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
March 22, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) N/A 16.0
 
March 22, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 2.1 μg/m3 (9) 10.0
 
March 22, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) N/A 9.0
 
March 22, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 8.0
 
March 22, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
March 22, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 1.4 μg/m3 (6) 6.0
 
March 22, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (4) 1.0 μg/m3 (4) 4.0
 
March 22, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 8.0
 
March 22, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
March 22, 2019, noon N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 8.9 μg/m3 (37) 37.0
 
March 22, 2019, 11 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 6.1 μg/m3 (25) 25.0
 
March 22, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
March 22, 2019, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (4) 4.1 μg/m3 (17) 17.0
 
March 22, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 11.0
 
March 22, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) 2.7 μg/m3 (11) 11.0
 
March 22, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 2.0 μg/m3 (2) 1.8 μg/m3 (8) 8.0
 
March 22, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 3.0 μg/m3 (3) 2.8 μg/m3 (12) 12.0
 
March 22, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 8.1 μg/m3 (34) 34.0
 
March 22, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 23.0
 
March 22, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
March 22, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 11.1 μg/m3 (46) 46.0
 
March 21, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
March 21, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 16.1 μg/m3 (59) 59.0
 
March 21, 2019, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 61.0 μg/m3 (53) 17.2 μg/m3 (61) 61.0
 
March 21, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 14.5 μg/m3 (55) 55.0
 
March 21, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
March 21, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
March 21, 2019, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
March 21, 2019, 2 p.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 13.3 μg/m3 (53) 53.0
 
March 21, 2019, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 14.4 μg/m3 (55) 55.0
 
March 21, 2019, noon N/A N/A N/A 32.0 ppb (30) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 16.9 μg/m3 (60) 60.0
 
March 21, 2019, 11 a.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) N/A N/A 20.0 μg/m3 (18) 16.3 μg/m3 (59) 59.0
 
March 21, 2019, 10 a.m. N/A N/A N/A 28.0 ppb (26) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 14.2 μg/m3 (55) 55.0
 
March 21, 2019, 9 a.m. N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 13.9 μg/m3 (54) 54.0
 
March 21, 2019, 8 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 15.5 μg/m3 (57) 57.0
 
March 21, 2019, 7 a.m. N/A N/A N/A 25.0 ppb (23) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 24.6 μg/m3 (77) 77.0
 
March 21, 2019, 6 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) N/A N/A 35.0 μg/m3 (32) 29.2 μg/m3 (87) 87.0
 
March 21, 2019, 5 a.m. N/A N/A N/A 37.0 ppb (34) N/A 1.0 ppb (1) N/A N/A 33.0 μg/m3 (30) 30.0 μg/m3 (88) 88.0
 
March 21, 2019, 3 a.m. N/A N/A N/A 43.0 ppb (40) N/A 0.0 ppb (0) N/A N/A 29.0 μg/m3 (26) 20.8 μg/m3 (69) 69.0
 
March 21, 2019, 2 a.m. N/A N/A N/A 38.0 ppb (35) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 15.7 μg/m3 (58) 58.0
 
March 21, 2019, 1 a.m. N/A N/A N/A 32.0 ppb (30) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 7.8 μg/m3 (32) 32.0
 
March 21, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 5.5 μg/m3 (23) 23.0
 
March 20, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
March 20, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 13.0
 
March 20, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 14.0
 
March 20, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
March 20, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 15.0
 
March 20, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
March 20, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 4.9 μg/m3 (20) 20.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
March 20, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
March 20, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
March 20, 2019, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A 24.0 μg/m3 (22) 11.8 μg/m3 (49) 49.0
 
March 20, 2019, noon N/A N/A N/A 35.0 ppb (32) N/A 1.0 ppb (1) N/A N/A 20.0 μg/m3 (18) 15.1 μg/m3 (57) 57.0
 
March 20, 2019, 11 a.m. N/A N/A N/A 40.0 ppb (37) N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 14.5 μg/m3 (55) 55.0
 
March 20, 2019, 10 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 9 a.m. N/A N/A N/A 32.0 ppb (30) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 14.2 μg/m3 (55) 55.0
 
March 20, 2019, 8 a.m. N/A N/A N/A 34.0 ppb (31) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 14.2 μg/m3 (55) 55.0
 
March 20, 2019, 7 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 17.5 μg/m3 (62) 62.0
 
March 20, 2019, 6 a.m. N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 20.8 μg/m3 (69) 69.0
 
March 20, 2019, 5 a.m. N/A N/A N/A 34.0 ppb (31) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 21.1 μg/m3 (69) 69.0
 
March 20, 2019, 3 a.m. N/A N/A N/A 42.0 ppb (39) N/A 1.0 ppb (1) N/A N/A 27.0 μg/m3 (25) 23.5 μg/m3 (74) 74.0
 
March 20, 2019, 2 a.m. N/A N/A N/A 40.0 ppb (37) N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 14.4 μg/m3 (55) 55.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 8.3 μg/m3 (35) 35.0
 
March 20, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 6.8 μg/m3 (28) 28.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.5 μg/m3 (23) 23.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 2.7 μg/m3 (11) 11.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 13.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 10.0
 
March 19, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 14.0
 
March 19, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 7.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.5 μg/m3 (23) 23.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 4.2 μg/m3 (18) 18.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 5.6 μg/m3 (23) 23.0
 
March 19, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 4.4 μg/m3 (18) 18.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.8 μg/m3 (24) 24.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 6.3 μg/m3 (26) 26.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 13.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 13.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 16.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 15.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0