ID: 2316

AQSQID: 371830021

Site Name: Triple Oak - Near Road

Added: April 21, 2020, 6:24 p.m.

Updated: April 21, 2021, 6:44 p.m.

Location: Morrisville (Dan K Moore Fwy), NC

Reporting: True, Located: True

Current AQI: 17.0

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
April 21, 2021, 5 p.m. 17.2 ppb (17) 6.8 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A N/A 17.0
 
April 21, 2021, 4 p.m. 15.3 ppb (15) 7.5 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A N/A 15.0
 
April 21, 2021, 3 p.m. 15.6 ppb (15) 7.6 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A N/A 15.0
 
April 21, 2021, 2 p.m. 20.6 ppb (20) 10.6 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A N/A 20.0
 
April 21, 2021, 1 p.m. 20.7 ppb (20) 10.6 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A N/A 20.0
 
April 21, 2021, noon 23.3 ppb (22) 11.0 ppb (11) N/A 12.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A N/A 22.0
 
April 21, 2021, 11 a.m. 35.0 ppb (34) 17.3 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A N/A 34.0
 
April 21, 2021, 10 a.m. 41.3 ppb (39) 18.9 ppb (18) N/A 22.0 ppb (21) N/A N/A N/A 0.43 ppb (5) N/A N/A 39.0
 
April 21, 2021, 9 a.m. 17.0 ppb (17) 4.2 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.24 ppb (3) N/A N/A 17.0
 
April 21, 2021, 8 a.m. 19.8 ppb (19) 4.5 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.21 ppb (3) N/A N/A 19.0
 
April 21, 2021, 7 a.m. 16.5 ppb (16) 3.9 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A N/A 16.0
 
April 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) N/A N/A 3.0
 
April 21, 2021, 5 a.m. 9.3 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) N/A N/A 9.0
 
April 21, 2021, 4 a.m. 10.1 ppb (10) 2.2 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.19 ppb (3) N/A N/A 10.0
 
April 21, 2021, 3 a.m. 7.4 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A N/A 7.0
 
April 21, 2021, 2 a.m. 11.2 ppb (11) 2.2 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A N/A 11.0
 
April 21, 2021, 1 a.m. 13.2 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) N/A N/A 13.0
 
April 21, 2021, midnight 13.0 ppb (13) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.3 ppb (4) N/A N/A 13.0
 
April 20, 2021, 11 p.m. 18.8 ppb (18) 4.8 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.31 ppb (4) N/A N/A 18.0
 
April 20, 2021, 10 p.m. 18.9 ppb (18) 7.6 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A N/A 18.0
 
April 20, 2021, 9 p.m. 19.0 ppb (18) 7.7 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A N/A 18.0
 
April 20, 2021, 8 p.m. 15.9 ppb (15) 7.1 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A N/A 15.0
 
April 20, 2021, 7 p.m. 22.6 ppb (22) 8.6 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.3 ppb (4) N/A N/A 22.0
 
April 20, 2021, 6 p.m. 18.6 ppb (18) 8.5 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.3 ppb (4) N/A N/A 18.0
 
April 20, 2021, 5 p.m. 16.4 ppb (16) 8.0 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A N/A 16.0
 
April 20, 2021, 4 p.m. 20.0 ppb (19) 9.1 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.27 ppb (4) N/A N/A 19.0
 
April 20, 2021, 3 p.m. 24.8 ppb (24) 11.6 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 2 p.m. 28.1 ppb (27) 14.1 ppb (14) N/A 14.0 ppb (14) N/A N/A N/A 0.31 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 20, 2021, 1 p.m. 39.3 ppb (38) 22.0 ppb (21) N/A 17.0 ppb (17) N/A N/A N/A 0.4 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
April 20, 2021, noon 86.2 ppb (86) 68.5 ppb (67) N/A 18.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 11.0 μg/m3 (46) 86.0
 
April 20, 2021, 11 a.m. 100.3 ppb (101) 86.9 ppb (87) N/A 13.0 ppb (13) N/A N/A N/A 0.88 ppb (11) N/A 9.0 μg/m3 (38) 101.0
 
April 20, 2021, 10 a.m. 34.2 ppb (33) 22.9 ppb (22) N/A 11.0 ppb (11) N/A N/A N/A 0.37 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
April 20, 2021, 9 a.m. 26.0 ppb (25) 15.1 ppb (15) N/A 11.0 ppb (11) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
April 20, 2021, 8 a.m. 17.5 ppb (17) 6.1 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 7 a.m. 13.4 ppb (13) 2.1 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 20, 2021, 5 a.m. 20.2 ppb (20) 2.7 ppb (3) N/A 17.0 ppb (17) N/A N/A N/A 0.31 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 20, 2021, 4 a.m. 30.9 ppb (30) 8.3 ppb (8) N/A 23.0 ppb (22) N/A N/A N/A 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 20, 2021, 3 a.m. 41.8 ppb (40) 18.6 ppb (18) N/A 23.0 ppb (22) N/A N/A N/A 0.51 ppb (6) N/A 9.0 μg/m3 (38) 40.0
 
April 20, 2021, 2 a.m. 31.4 ppb (30) 6.0 ppb (6) N/A 25.0 ppb (24) N/A N/A N/A 0.4 ppb (5) N/A 6.0 μg/m3 (25) 30.0
 
April 20, 2021, 1 a.m. 20.7 ppb (20) 1.3 ppb (2) N/A 19.0 ppb (18) N/A N/A N/A 0.39 ppb (5) N/A 0.0 μg/m3 (0) 20.0
 
April 20, 2021, midnight 4.1 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 11 p.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
April 19, 2021, 10 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 9 p.m. 6.9 ppb (7) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
April 19, 2021, 8 p.m. 6.4 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
April 19, 2021, 7 p.m. 8.7 ppb (9) 4.3 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 6 p.m. 14.7 ppb (14) 7.5 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) N/A 2.0 μg/m3 (9) 14.0
 
April 19, 2021, 5 p.m. 7.3 ppb (7) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 19, 2021, 4 p.m. 8.3 ppb (8) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
April 19, 2021, 3 p.m. 2.7 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 19, 2021, 2 p.m. 6.7 ppb (7) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 19, 2021, 1 p.m. 6.6 ppb (7) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 19, 2021, noon 7.7 ppb (8) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 11 a.m. 11.5 ppb (11) 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
April 19, 2021, 10 a.m. 18.3 ppb (18) 7.4 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 19, 2021, 9 a.m. 12.7 ppb (12) 5.5 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 8 a.m. 8.5 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 19, 2021, 7 a.m. 17.6 ppb (17) 2.9 ppb (3) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 5 a.m. 22.4 ppb (22) 6.6 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A 0.38 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
April 19, 2021, 4 a.m. 9.7 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 19, 2021, 3 a.m. 7.6 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 19, 2021, 2 a.m. 22.6 ppb (22) 1.3 ppb (2) N/A 21.0 ppb (20) N/A N/A N/A 0.38 ppb (5) N/A 4.0 μg/m3 (17) 22.0
 
April 19, 2021, 1 a.m. 15.7 ppb (15) 3.1 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (9) 15.0
 
April 19, 2021, midnight 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 18, 2021, 11 p.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 18, 2021, 10 p.m. 12.9 ppb (13) 5.0 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 9 p.m. 13.3 ppb (13) 5.3 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 8 p.m. 9.2 ppb (9) 3.6 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
April 18, 2021, 7 p.m. 9.5 ppb (9) 4.3 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
April 18, 2021, 6 p.m. 8.4 ppb (8) 3.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 18, 2021, 5 p.m. 3.5 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
April 18, 2021, 4 p.m. 5.0 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 18, 2021, 3 p.m. 5.2 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 18, 2021, 2 p.m. 4.1 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 1 p.m. 5.9 ppb (6) 2.6 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 18, 2021, noon 5.4 ppb (6) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 11 a.m. 3.2 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
April 18, 2021, 10 a.m. 4.5 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
April 18, 2021, 9 a.m. 6.2 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 18, 2021, 8 a.m. 8.4 ppb (8) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 18, 2021, 7 a.m. 11.0 ppb (11) 1.6 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 15.0 μg/m3 (58) 58.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
April 18, 2021, 5 a.m. 31.4 ppb (30) 15.4 ppb (15) N/A 16.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
April 18, 2021, 4 a.m. 27.9 ppb (27) 11.0 ppb (11) N/A 17.0 ppb (17) N/A N/A N/A 0.48 ppb (6) N/A 6.0 μg/m3 (25) 27.0
 
April 18, 2021, 3 a.m. 20.3 ppb (20) 5.3 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 20.0
 
April 18, 2021, 2 a.m. 16.6 ppb (16) 0.5 ppb (1) N/A 16.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
April 18, 2021, 1 a.m. 5.1 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
April 18, 2021, midnight 2.7 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, 11 p.m. 1.8 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
April 17, 2021, 10 p.m. 10.8 ppb (11) 3.7 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, 9 p.m. 14.8 ppb (14) 5.9 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.36 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, 8 p.m. 12.4 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.38 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
April 17, 2021, 7 p.m. 11.4 ppb (11) 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.31 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, 6 p.m. 10.5 ppb (10) 4.4 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
April 17, 2021, 5 p.m. 12.5 ppb (12) 5.3 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
April 17, 2021, 4 p.m. 14.4 ppb (14) 7.1 ppb (7) N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 17, 2021, 3 p.m. 9.0 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
April 17, 2021, 2 p.m. 11.2 ppb (11) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 17, 2021, 1 p.m. 10.9 ppb (11) 4.4 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, noon 30.5 ppb (29) 15.5 ppb (15) N/A 15.0 ppb (15) N/A N/A N/A 0.39 ppb (5) N/A 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 11 a.m. 7.5 ppb (8) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
April 17, 2021, 10 a.m. 5.8 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
April 17, 2021, 9 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
April 17, 2021, 8 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
April 17, 2021, 7 a.m. 2.7 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 17, 2021, 5 a.m. 17.6 ppb (17) 3.6 ppb (4) N/A 14.0 ppb (14) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 17, 2021, 4 a.m. 24.3 ppb (23) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 4.0 μg/m3 (17) 23.0
 
April 17, 2021, 3 a.m. 21.4 ppb (21) 5.3 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 17, 2021, 2 a.m. 15.2 ppb (15) 0.4 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (13) 15.0
 
April 17, 2021, 1 a.m. 11.2 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
April 17, 2021, midnight 12.3 ppb (12) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.29 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
April 16, 2021, 11 p.m. 22.4 ppb (22) 8.4 ppb (8) N/A 14.0 ppb (14) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 10 p.m. 31.3 ppb (30) 16.5 ppb (16) N/A 15.0 ppb (15) N/A N/A N/A 0.46 ppb (6) N/A 1.0 μg/m3 (5) 30.0
 
April 16, 2021, 9 p.m. 19.1 ppb (19) 9.7 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A 0.51 ppb (6) N/A 3.0 μg/m3 (13) 19.0
 
April 16, 2021, 8 p.m. 14.8 ppb (14) 7.3 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A 0.3 ppb (4) N/A 3.0 μg/m3 (13) 14.0
 
April 16, 2021, 7 p.m. 16.2 ppb (16) 8.6 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 16, 2021, 6 p.m. 18.5 ppb (18) 9.5 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 5 p.m. 14.7 ppb (14) 7.5 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
April 16, 2021, 4 p.m. 18.1 ppb (18) 9.4 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
April 16, 2021, 3 p.m. 22.1 ppb (21) 12.4 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 2 p.m. 16.7 ppb (16) 8.9 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 16, 2021, 1 p.m. 27.4 ppb (26) 16.1 ppb (16) N/A 11.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
April 16, 2021, noon 38.4 ppb (37) 23.0 ppb (22) N/A 15.0 ppb (15) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 37.0
 
April 16, 2021, 11 a.m. 64.7 ppb (63) 45.4 ppb (43) N/A 19.0 ppb (18) N/A N/A N/A 0.57 ppb (7) N/A 8.0 μg/m3 (34) 63.0
 
April 16, 2021, 10 a.m. 40.2 ppb (38) 22.4 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.36 ppb (5) N/A 4.0 μg/m3 (17) 38.0
 
April 16, 2021, 9 a.m. 24.1 ppb (23) 6.4 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (13) 23.0
 
April 16, 2021, 8 a.m. 5.5 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 16, 2021, 7 a.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
April 16, 2021, 5 a.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 16, 2021, 4 a.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 16, 2021, 3 a.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A -2.0 μg/m3 (0) 3.0
 
April 16, 2021, 2 a.m. 4.6 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
April 16, 2021, 1 a.m. 12.4 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 12.0
 
April 16, 2021, midnight 4.3 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 11 p.m. 15.2 ppb (15) 3.8 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 15, 2021, 10 p.m. 18.4 ppb (18) 6.9 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
April 15, 2021, 9 p.m. 15.6 ppb (15) 6.2 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 8 p.m. 13.3 ppb (13) 5.8 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
April 15, 2021, 7 p.m. 21.8 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 6 p.m. 23.9 ppb (23) 11.3 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
April 15, 2021, 5 p.m. 12.1 ppb (12) 5.3 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
April 15, 2021, 4 p.m. 17.3 ppb (17) 8.3 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A -2.0 μg/m3 (0) 17.0
 
April 15, 2021, 3 p.m. 10.7 ppb (11) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 15, 2021, 2 p.m. 6.7 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 15, 2021, 1 p.m. 7.8 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 15, 2021, noon 12.9 ppb (13) 5.2 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 11 a.m. 13.4 ppb (13) 4.9 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
April 15, 2021, 10 a.m. 14.6 ppb (14) 5.3 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.31 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 9 a.m. 10.1 ppb (10) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 8 a.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, 7 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
April 15, 2021, 5 a.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 4 a.m. 5.5 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 3 a.m. 5.9 ppb (6) 0.8 ppb (1) 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
 
April 15, 2021, 2 a.m. 7.3 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 1 a.m. 8.6 ppb (9) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
April 15, 2021, midnight 12.9 ppb (13) 3.0 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 11 p.m. 20.8 ppb (20) 4.0 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.46 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
April 14, 2021, 10 p.m. 27.2 ppb (26) 7.1 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
April 14, 2021, 9 p.m. 21.1 ppb (20) 5.9 ppb (6) N/A 15.0 ppb (15) N/A N/A N/A 0.46 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 8 p.m. 22.5 ppb (22) 7.7 ppb (8) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 64.0
 
April 14, 2021, 7 p.m. 20.6 ppb (20) 7.3 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 6 p.m. 18.1 ppb (18) 8.5 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0