AQSQID: 371830021

Site Name: Triple Oak - Near Road

Location: Morrisville (Dan K Moore Fwy), NC

Reporting: True, Located: True

Current AQI: 54.0

Morrisville (Dan K Moore Fwy) NC, US: 35.8652, -78.8197

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 29, 2020, 5 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 20.0 μg/m3 (67) 67.0
 
March 29, 2020, 4 a.m. 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 20.0 μg/m3 (67) 67.0
 
March 29, 2020, 3 a.m. 13.9 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 27.0 μg/m3 (82) 82.0
 
March 29, 2020, 2 a.m. 12.6 ppb (12) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 29.0 μg/m3 (86) 86.0
 
March 29, 2020, 1 a.m. 14.6 ppb (14) 3.3 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.47 ppb (5) N/A 26.0 μg/m3 (80) 80.0
 
March 29, 2020, midnight 15.1 ppb (14) 3.4 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.44 ppb (5) N/A 19.0 μg/m3 (65) 65.0
 
March 28, 2020, 11 p.m. 14.5 ppb (13) 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.42 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 10 p.m. 10.8 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
March 28, 2020, 9 p.m. 9.7 ppb (9) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
March 28, 2020, 8 p.m. 10.4 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
March 28, 2020, 7 p.m. 8.6 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 6 p.m. 9.8 ppb (9) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (4) N/A 21.0 μg/m3 (69) 69.0
 
March 28, 2020, 5 p.m. 8.7 ppb (8) 4.4 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.33 ppb (4) N/A 22.0 μg/m3 (71) 71.0
 
March 28, 2020, 4 p.m. 8.8 ppb (8) 4.9 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 24.0 μg/m3 (76) 76.0
 
March 28, 2020, 3 p.m. 9.7 ppb (9) 5.4 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 2 p.m. 10.1 ppb (9) 5.5 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 1 p.m. 11.1 ppb (10) 6.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, noon 22.0 ppb (20) 12.3 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.43 ppb (5) N/A 21.0 μg/m3 (69) 69.0
 
March 28, 2020, 11 a.m. 29.9 ppb (28) 17.8 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A 0.49 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 10 a.m. 27.2 ppb (25) 17.0 ppb (16) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 19.0 μg/m3 (65) 65.0
 
March 28, 2020, 9 a.m. 4.5 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) N/A 21.0 μg/m3 (69) 69.0
 
March 28, 2020, 8 a.m. 7.1 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 7 a.m. 4.7 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 5 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
March 28, 2020, 4 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (3) N/A 21.0 μg/m3 (69) 69.0
 
March 28, 2020, 3 a.m. 11.8 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 23.0 μg/m3 (73) 73.0
 
March 28, 2020, 2 a.m. 9.9 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) N/A 19.0 μg/m3 (65) 65.0
 
March 28, 2020, 1 a.m. 24.3 ppb (23) 4.5 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
March 28, 2020, midnight 22.7 ppb (21) 4.3 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.38 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 11 p.m. 11.9 ppb (11) 2.6 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
March 27, 2020, 10 p.m. 25.4 ppb (24) 8.8 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.45 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
March 27, 2020, 9 p.m. 20.4 ppb (19) 8.7 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.45 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
March 27, 2020, 8 p.m. 19.8 ppb (18) 9.0 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.39 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 27, 2020, 7 p.m. 26.7 ppb (25) 14.1 ppb (13) N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 6 p.m. 29.1 ppb (27) 16.7 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 5 p.m. 30.0 ppb (28) 17.6 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 4 p.m. 32.0 ppb (30) 20.2 ppb (19) N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 3 p.m. 32.0 ppb (30) 20.5 ppb (19) N/A 12.0 ppb (11) N/A N/A N/A 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 2 p.m. 28.6 ppb (26) 17.8 ppb (16) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 1 p.m. 29.3 ppb (27) 15.9 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, noon 26.1 ppb (24) 16.8 ppb (16) N/A 9.0 ppb (8) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 11 a.m. 29.3 ppb (27) 18.8 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 10 a.m. 27.6 ppb (26) 16.1 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 9 a.m. 17.1 ppb (16) 9.2 ppb (9) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 8 a.m. 15.9 ppb (15) 9.1 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 7 a.m. 6.5 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 5 a.m. 5.1 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 4 a.m. 17.4 ppb (16) 7.1 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 3 a.m. 25.6 ppb (24) 9.8 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 2 a.m. 24.9 ppb (23) 10.0 ppb (9) N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 1 a.m. 22.2 ppb (21) 7.9 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, midnight 17.7 ppb (16) 5.5 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 2.0 μg/m3 (8) 16.0
 
March 26, 2020, 11 p.m. 20.1 ppb (19) 5.9 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 10 p.m. 25.1 ppb (23) 13.6 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 9 p.m. 20.7 ppb (19) 12.9 ppb (12) N/A 8.0 ppb (7) N/A N/A N/A 0.36 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 8 p.m. 25.2 ppb (23) 14.7 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 23.0
 
March 26, 2020, 7 p.m. 25.7 ppb (24) 14.2 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.31 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 6 p.m. 18.2 ppb (17) 9.4 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (8) 17.0
 
March 26, 2020, 5 p.m. 26.1 ppb (24) 15.6 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 24.0
 
March 26, 2020, 4 p.m. 35.9 ppb (33) 21.2 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (8) 33.0
 
March 26, 2020, 3 p.m. 36.6 ppb (34) 21.8 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 34.0
 
March 26, 2020, 2 p.m. 25.4 ppb (24) 13.9 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.22 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
March 26, 2020, 1 p.m. 19.7 ppb (18) 9.9 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A -1.0 μg/m3 (0) 18.0
 
March 26, 2020, noon 12.7 ppb (12) 5.4 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A -1.0 μg/m3 (0) 12.0
 
March 26, 2020, 11 a.m. 9.2 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A -1.0 μg/m3 (0) 9.0
 
March 26, 2020, 10 a.m. 7.7 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 26, 2020, 9 a.m. 5.5 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 5.0
 
March 26, 2020, 8 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 7 a.m. 5.0 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 5.0
 
March 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
March 26, 2020, 5 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 26, 2020, 4 a.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 3 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 2 a.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A -1.0 μg/m3 (0) 3.0
 
March 26, 2020, 1 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 26, 2020, midnight 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 25, 2020, 11 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 25, 2020, 10 p.m. 2.7 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 0.0 μg/m3 (0) 3.0
 
March 25, 2020, 9 p.m. 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 8 p.m. 3.9 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A -3.0 μg/m3 (0) 4.0
 
March 25, 2020, 7 p.m. 5.0 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 1.0 μg/m3 (4) 5.0
 
March 25, 2020, 6 p.m. 5.7 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 1.0 μg/m3 (4) 5.0
 
March 25, 2020, 5 p.m. 4.6 ppb (4) 2.4 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 25, 2020, 4 p.m. 3.2 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A -2.0 μg/m3 (0) 3.0
 
March 25, 2020, 3 p.m. 10.1 ppb (9) 5.2 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 0.0 μg/m3 (0) 9.0
 
March 25, 2020, 2 p.m. 8.4 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 8.0
 
March 25, 2020, 1 p.m. 7.7 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A -1.0 μg/m3 (0) 7.0
 
March 25, 2020, noon 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A -2.0 μg/m3 (0) 5.0
 
March 25, 2020, 11 a.m. 7.2 ppb (7) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
March 25, 2020, 10 a.m. 6.8 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 1.0 μg/m3 (4) 6.0
 
March 25, 2020, 9 a.m. 4.3 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 8 a.m. 3.7 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 7 a.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
March 25, 2020, 5 a.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 25, 2020, 4 a.m. 5.1 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 3 a.m. 6.9 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 2 a.m. 4.1 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 25, 2020, 1 a.m. 9.0 ppb (8) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 25, 2020, midnight 8.8 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 11 p.m. 12.2 ppb (11) 3.9 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2020, 10 p.m. 12.8 ppb (12) 5.5 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 9 p.m. 6.0 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 8 p.m. 9.8 ppb (9) 4.6 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 7 p.m. 7.5 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2020, 6 p.m. 7.8 ppb (7) 3.8 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 5 p.m. 10.8 ppb (10) 5.7 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 4 p.m. 11.7 ppb (11) 6.8 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 3 p.m. 12.0 ppb (11) 6.9 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 2 p.m. 13.2 ppb (12) 8.1 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2020, 1 p.m. 9.6 ppb (9) 5.2 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2020, noon 11.0 ppb (10) 5.2 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 11 a.m. 11.8 ppb (11) 6.2 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 10 a.m. 12.9 ppb (12) 6.9 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 9 a.m. 10.0 ppb (9) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2020, 8 a.m. 18.1 ppb (17) 8.7 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2020, 7 a.m. 8.8 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 5 a.m. 4.9 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 4 a.m. 9.5 ppb (9) 4.6 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 3 a.m. 12.4 ppb (11) 6.1 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 2 a.m. 11.3 ppb (10) 5.8 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 1 a.m. 13.3 ppb (12) 7.1 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, midnight 14.9 ppb (14) 7.0 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.28 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2020, 11 p.m. 18.6 ppb (17) 10.1 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 17.0
 
March 23, 2020, 10 p.m. 24.1 ppb (22) 14.4 ppb (13) N/A 10.0 ppb (9) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2020, 9 p.m. 27.0 ppb (25) 14.8 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A 0.45 ppb (5) N/A 3.0 μg/m3 (12) 25.0
 
March 23, 2020, 8 p.m. 30.4 ppb (28) 17.9 ppb (17) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 2.0 μg/m3 (8) 28.0
 
March 23, 2020, 7 p.m. 32.0 ppb (30) 19.1 ppb (18) N/A 13.0 ppb (12) N/A N/A N/A 0.39 ppb (4) N/A 1.0 μg/m3 (4) 30.0
 
March 23, 2020, 6 p.m. 31.3 ppb (29) 18.4 ppb (17) N/A 13.0 ppb (12) N/A N/A N/A 0.37 ppb (4) N/A 2.0 μg/m3 (8) 29.0
 
March 23, 2020, 5 p.m. 34.3 ppb (32) 18.4 ppb (17) N/A 16.0 ppb (15) N/A N/A N/A 0.37 ppb (4) N/A 2.0 μg/m3 (8) 32.0
 
March 23, 2020, 4 p.m. 26.7 ppb (25) 14.1 ppb (13) N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 25.0
 
March 23, 2020, 3 p.m. 31.7 ppb (29) 17.9 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 29.0
 
March 23, 2020, 2 p.m. 11.5 ppb (11) 5.5 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2020, 1 p.m. 9.7 ppb (9) 3.7 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 9.0
 
March 23, 2020, noon 11.1 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 0.0 μg/m3 (0) 10.0
 
March 23, 2020, 11 a.m. 9.3 ppb (9) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A -2.0 μg/m3 (0) 9.0
 
March 23, 2020, 10 a.m. 5.7 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2020, 9 a.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2020, 8 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
March 23, 2020, 7 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2020, 5 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 23, 2020, 4 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 23, 2020, 3 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 23, 2020, 2 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 23, 2020, 1 a.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
March 23, 2020, midnight 3.3 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A N/A 3.0
 
March 22, 2020, 11 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 10 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 9 p.m. 2.4 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
March 22, 2020, 8 p.m. 2.6 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
March 22, 2020, 7 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
March 22, 2020, 6 p.m. 1.9 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
March 22, 2020, 5 p.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 4 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 3 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 2 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 1 p.m. 1.3 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 22, 2020, noon 1.5 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
March 22, 2020, 11 a.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 22, 2020, 10 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 22, 2020, 9 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
March 22, 2020, 8 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
March 22, 2020, 7 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0