AQSQID: 450450015

Site Name: Greenville-Esc

Location: Greenville, SC

Reporting: True, Located: True

Current AQI: 52.0

Greenville SC, US: 34.843899, -82.414597

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
May 23, 2019, 8 a.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) 9.1 μg/m3 (38) 38.0
 
May 23, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 14.7 μg/m3 (56) 56.0
 
May 23, 2019, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 14.1 μg/m3 (54) 54.0
 
May 23, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 28.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
May 23, 2019, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 32.0 μg/m3 (29) 21.8 μg/m3 (71) 71.0
 
May 23, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 31.0 μg/m3 (28) 19.5 μg/m3 (66) 66.0
 
May 23, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 32.0 μg/m3 (29) 20.1 μg/m3 (67) 67.0
 
May 23, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 34.0 μg/m3 (31) 21.8 μg/m3 (71) 71.0
 
May 22, 2019, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 31.0 μg/m3 (28) 19.8 μg/m3 (67) 67.0
 
May 22, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 29.0 μg/m3 (26) 19.2 μg/m3 (65) 65.0
 
May 22, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 17.5 μg/m3 (62) 62.0
 
May 22, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 16.2 μg/m3 (59) 59.0
 
May 22, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 15.4 μg/m3 (57) 57.0
 
May 22, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 17.1 μg/m3 (61) 61.0
 
May 22, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 15.2 μg/m3 (57) 57.0
 
May 22, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 28.0 μg/m3 (25) 17.6 μg/m3 (62) 62.0
 
May 22, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 30.0 μg/m3 (27) 16.8 μg/m3 (60) 60.0
 
May 22, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
May 22, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) 9.9 μg/m3 (41) 41.0
 
May 22, 2019, noon N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 11 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) 12.1 μg/m3 (50) 50.0
 
May 22, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
May 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 18.0 μg/m3 (16) 7.3 μg/m3 (30) 30.0
 
May 22, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 13.8 μg/m3 (54) 54.0
 
May 22, 2019, 6 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 11.7 μg/m3 (49) 49.0
 
May 22, 2019, 5 a.m. N/A N/A N/A 30.0 ppb (28) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 13.1 μg/m3 (52) 52.0
 
May 22, 2019, 3 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) 11.7 μg/m3 (49) 49.0
 
May 22, 2019, 2 a.m. N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 14.0 μg/m3 (54) 54.0
 
May 22, 2019, 1 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) 9.4 μg/m3 (39) 39.0
 
May 22, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 4.7 μg/m3 (20) 20.0
 
May 21, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 3.3 μg/m3 (14) 15.0
 
May 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 16.0 μg/m3 (15) 3.2 μg/m3 (13) 15.0
 
May 21, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 2.6 μg/m3 (11) 15.0
 
May 21, 2019, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 1.0 μg/m3 (1) 1.4 μg/m3 (6) 8.0
 
May 21, 2019, 7 p.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 1.0 μg/m3 (1) 0.2 μg/m3 (1) 13.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 3.1 μg/m3 (13) 15.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 22.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 2.5 μg/m3 (10) 10.0
 
May 21, 2019, 1 p.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (17) 5.2 μg/m3 (22) 22.0
 
May 21, 2019, noon N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 9.9 μg/m3 (41) 41.0
 
May 21, 2019, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 13.3 μg/m3 (53) 53.0
 
May 21, 2019, 10 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 9.8 μg/m3 (41) 41.0
 
May 21, 2019, 9 a.m. N/A N/A N/A 46.0 ppb (43) N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 6.3 μg/m3 (26) 43.0
 
May 21, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 16.0
 
May 21, 2019, 6 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) 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
May 21, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
May 21, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 7.3 μg/m3 (30) 30.0
 
May 21, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 7.2 μg/m3 (30) 30.0
 
May 21, 2019, midnight 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) 9.9 μg/m3 (41) 41.0
 
May 20, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 8.5 μg/m3 (35) 35.0
 
May 20, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 8.8 μg/m3 (37) 37.0
 
May 20, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 7.1 μg/m3 (30) 30.0
 
May 20, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 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 14.0 μg/m3 (13) 7.3 μg/m3 (30) 30.0
 
May 20, 2019, 6 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) 8.3 μg/m3 (35) 35.0
 
May 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 15.0 μg/m3 (14) 8.7 μg/m3 (36) 36.0
 
May 20, 2019, 4 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) 7.5 μg/m3 (31) 31.0
 
May 20, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 10.3 μg/m3 (43) 43.0
 
May 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 N/A 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
May 20, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
May 20, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 9 a.m. N/A N/A N/A 34.0 ppb (31) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 7.3 μg/m3 (30) 31.0
 
May 20, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 8.2 μg/m3 (34) 34.0
 
May 20, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 8.4 μg/m3 (35) 35.0
 
May 20, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 6.8 μg/m3 (28) 28.0
 
May 20, 2019, 1 a.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) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, midnight 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) 9.4 μg/m3 (39) 39.0
 
May 19, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
May 19, 2019, 10 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) 7.1 μg/m3 (30) 30.0
 
May 19, 2019, 9 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) 9.7 μg/m3 (40) 40.0
 
May 19, 2019, 8 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) 8.0 μg/m3 (33) 33.0
 
May 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 15.0 μg/m3 (14) 11.7 μg/m3 (49) 49.0
 
May 19, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 12.8 μg/m3 (52) 52.0
 
May 19, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 13.6 μg/m3 (53) 53.0
 
May 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 22.0 μg/m3 (20) 15.5 μg/m3 (57) 57.0
 
May 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 22.0 μg/m3 (20) 15.9 μg/m3 (58) 58.0
 
May 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 21.0 μg/m3 (19) 15.9 μg/m3 (58) 58.0
 
May 19, 2019, 1 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) 16.6 μg/m3 (60) 60.0
 
May 19, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 17.1 μg/m3 (61) 61.0
 
May 19, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 18.2 μg/m3 (63) 63.0
 
May 19, 2019, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 16.2 μg/m3 (59) 59.0
 
May 19, 2019, 9 a.m. N/A N/A N/A 37.0 ppb (34) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (24) 19.1 μg/m3 (65) 65.0
 
May 19, 2019, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 19.3 μg/m3 (66) 66.0
 
May 19, 2019, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 17.2 μg/m3 (61) 61.0
 
May 19, 2019, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 26.0 μg/m3 (24) 20.5 μg/m3 (68) 68.0
 
May 19, 2019, 5 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) N/A N/A 28.0 μg/m3 (25) 22.3 μg/m3 (72) 72.0
 
May 19, 2019, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 19.2 μg/m3 (65) 65.0
 
May 19, 2019, 2 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 14.2 μg/m3 (55) 55.0
 
May 19, 2019, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 13.7 μg/m3 (54) 54.0
 
May 19, 2019, midnight 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) 11.6 μg/m3 (48) 48.0
 
May 18, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
May 18, 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
 
May 18, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
May 18, 2019, 8 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) 8.2 μg/m3 (34) 34.0
 
May 18, 2019, 7 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) 10.0 μg/m3 (42) 42.0
 
May 18, 2019, 6 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) 10.5 μg/m3 (44) 44.0
 
May 18, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
May 18, 2019, 4 p.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) 9.8 μg/m3 (41) 41.0
 
May 18, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
May 18, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 10.2 μg/m3 (42) 42.0
 
May 18, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 13.7 μg/m3 (54) 54.0
 
May 18, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 14.1 μg/m3 (54) 54.0
 
May 18, 2019, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 12.7 μg/m3 (51) 51.0
 
May 18, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 15.5 μg/m3 (57) 57.0
 
May 18, 2019, 9 a.m. N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 15.2 μg/m3 (57) 57.0
 
May 18, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 16.6 μg/m3 (60) 60.0
 
May 18, 2019, 7 a.m. N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 22.0 μg/m3 (20) 16.7 μg/m3 (60) 60.0
 
May 18, 2019, 6 a.m. N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 14.3 μg/m3 (55) 55.0
 
May 18, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 15.9 μg/m3 (58) 58.0
 
May 18, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (22) 17.7 μg/m3 (62) 62.0
 
May 18, 2019, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 21.0 μg/m3 (19) 14.7 μg/m3 (56) 56.0
 
May 18, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 12.4 μg/m3 (51) 51.0
 
May 18, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 10.8 μg/m3 (45) 45.0
 
May 17, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 9.2 μg/m3 (38) 38.0
 
May 17, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
May 17, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 10.6 μg/m3 (44) 44.0
 
May 17, 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) 7.3 μg/m3 (30) 30.0
 
May 17, 2019, 7 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) 9.4 μg/m3 (39) 39.0
 
May 17, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
May 17, 2019, 5 p.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) 7.8 μg/m3 (32) 32.0
 
May 17, 2019, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 7.2 μg/m3 (30) 30.0
 
May 17, 2019, 3 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) 8.2 μg/m3 (34) 34.0
 
May 17, 2019, 2 p.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) 9.1 μg/m3 (38) 38.0
 
May 17, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 13.7 μg/m3 (54) 54.0
 
May 17, 2019, noon N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 14.2 μg/m3 (55) 55.0
 
May 17, 2019, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 13.6 μg/m3 (53) 53.0
 
May 17, 2019, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 14.2 μg/m3 (55) 55.0
 
May 17, 2019, 9 a.m. N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 14.5 μg/m3 (55) 55.0
 
May 17, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
May 17, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
May 17, 2019, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 14.5 μg/m3 (55) 55.0
 
May 17, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 13.4 μg/m3 (53) 53.0
 
May 17, 2019, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 12.8 μg/m3 (52) 52.0
 
May 17, 2019, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
May 17, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 9.2 μg/m3 (38) 38.0
 
May 16, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
May 16, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 7.3 μg/m3 (30) 30.0
 
May 16, 2019, 9 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) 6.7 μg/m3 (28) 28.0
 
May 16, 2019, 8 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) 7.5 μg/m3 (31) 31.0
 
May 16, 2019, 7 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) 7.6 μg/m3 (32) 32.0
 
May 16, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (11) 6.2 μg/m3 (26) 26.0
 
May 16, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 15.0
 
May 16, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (10) 0.4 μg/m3 (2) 10.0
 
May 16, 2019, 3 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) N/A 12.0
 
May 16, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
May 16, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (25) 13.8 μg/m3 (54) 54.0
 
May 16, 2019, noon N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A 23.0 μg/m3 (21) 15.5 μg/m3 (57) 57.0
 
May 16, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
May 16, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 14.2 μg/m3 (55) 55.0
 
May 16, 2019, 9 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 14.4 μg/m3 (55) 55.0
 
May 16, 2019, 8 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (13) 10.4 μg/m3 (43) 43.0
 
May 16, 2019, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A 17.0 μg/m3 (15) 14.4 μg/m3 (55) 55.0
 
May 16, 2019, 6 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
May 16, 2019, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (16) 14.1 μg/m3 (54) 54.0
 
May 16, 2019, 3 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 14.4 μg/m3 (55) 55.0
 
May 16, 2019, 2 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) 12.3 μg/m3 (51) 51.0