ID: 2375

AQSQID: 240270006

Site Name: Howard County Near Road

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

Updated: Nov. 26, 2020, 5:40 a.m.

Location: Laurel (I 95), MD

Reporting: True, Located: True

Current AQI: 38.0

Laurel (I 95) MD, US: 39.143197, -76.846192

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 26, 2020, midnight N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 25, 2020, 2 p.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
 
Nov. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 25, 2020, noon N/A N/A N/A N/A N/A N/A N/A 0.44 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.45 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2020, 7 a.m. 47.2 ppb (45) 25.0 ppb (24) N/A 22.0 ppb (21) N/A N/A N/A 0.2 ppb (3) N/A 10.0 μg/m3 (42) 45.0
 
Nov. 25, 2020, 6 a.m. 41.1 ppb (39) 21.1 ppb (20) N/A 20.0 ppb (19) N/A N/A N/A 0.2 ppb (3) N/A 8.0 μg/m3 (34) 39.0
 
Nov. 25, 2020, 5 a.m. 43.8 ppb (42) 23.7 ppb (23) N/A 20.0 ppb (19) N/A N/A N/A 0.27 ppb (4) N/A 9.0 μg/m3 (38) 42.0
 
Nov. 25, 2020, 4 a.m. 52.4 ppb (50) 28.0 ppb (27) N/A 24.0 ppb (23) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 50.0
 
Nov. 25, 2020, 3 a.m. 53.5 ppb (51) 30.2 ppb (29) N/A 23.0 ppb (22) N/A N/A N/A 0.31 ppb (4) N/A 8.0 μg/m3 (34) 51.0
 
Nov. 25, 2020, 2 a.m. 41.6 ppb (40) 20.7 ppb (20) N/A 21.0 ppb (20) N/A N/A N/A 0.29 ppb (4) N/A 8.0 μg/m3 (34) 40.0
 
Nov. 25, 2020, 1 a.m. 50.0 ppb (48) 27.4 ppb (26) N/A 23.0 ppb (22) N/A N/A N/A 0.31 ppb (4) N/A 9.0 μg/m3 (38) 48.0
 
Nov. 25, 2020, midnight 52.6 ppb (50) 30.4 ppb (29) N/A 22.0 ppb (21) N/A N/A N/A 0.35 ppb (4) N/A 8.0 μg/m3 (34) 50.0
 
Nov. 24, 2020, 11 p.m. 53.1 ppb (51) 30.7 ppb (29) N/A 22.0 ppb (21) N/A N/A N/A 0.4 ppb (5) N/A 8.0 μg/m3 (34) 51.0
 
Nov. 24, 2020, 10 p.m. 44.0 ppb (42) 26.5 ppb (25) N/A 17.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 24, 2020, 9 p.m. 11.6 ppb (11) 3.5 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.17 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 24, 2020, 8 p.m. 16.6 ppb (16) 7.6 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 24, 2020, 7 p.m. 16.3 ppb (16) 9.3 ppb (9) N/A 7.0 ppb (7) N/A N/A N/A 0.18 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 24, 2020, 6 p.m. 9.6 ppb (10) 4.4 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2020, 5 p.m. 17.9 ppb (17) 10.6 ppb (10) N/A 7.0 ppb (7) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 17.0
 
Nov. 24, 2020, 4 p.m. 15.6 ppb (15) 9.1 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2020, 3 p.m. 13.5 ppb (13) 7.3 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 24, 2020, 2 p.m. 15.2 ppb (15) 6.4 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 24, 2020, 1 p.m. 33.7 ppb (32) 19.1 ppb (19) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 24, 2020, noon 74.7 ppb (74) 48.2 ppb (46) N/A 27.0 ppb (26) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 74.0
 
Nov. 24, 2020, 11 a.m. 53.0 ppb (50) 31.0 ppb (30) N/A 22.0 ppb (21) N/A N/A N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 50.0
 
Nov. 24, 2020, 10 a.m. 47.5 ppb (45) 31.5 ppb (30) N/A 16.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 45.0
 
Nov. 24, 2020, 9 a.m. 30.2 ppb (29) 18.6 ppb (18) N/A 12.0 ppb (12) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 29.0
 
Nov. 24, 2020, 8 a.m. 28.0 ppb (27) 15.3 ppb (15) N/A 13.0 ppb (13) N/A N/A N/A 0.19 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 24, 2020, 7 a.m. 54.7 ppb (52) 34.8 ppb (33) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 52.0
 
Nov. 24, 2020, 6 a.m. 34.4 ppb (33) 18.7 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A 0.2 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 24, 2020, 5 a.m. 30.2 ppb (29) 17.6 ppb (17) N/A 13.0 ppb (13) N/A N/A N/A 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 24, 2020, 4 a.m. 21.4 ppb (21) 9.6 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Nov. 24, 2020, 3 a.m. 21.4 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 24, 2020, 2 a.m. 19.8 ppb (19) 8.1 ppb (8) N/A 12.0 ppb (12) N/A N/A N/A 0.24 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 24, 2020, 1 a.m. 32.8 ppb (31) 16.0 ppb (16) N/A 17.0 ppb (17) N/A N/A N/A 0.27 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 24, 2020, midnight 25.5 ppb (25) 11.2 ppb (11) N/A 14.0 ppb (14) N/A N/A N/A 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 23, 2020, 11 p.m. 23.5 ppb (23) 10.1 ppb (10) N/A 13.0 ppb (13) N/A N/A N/A 0.22 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 23, 2020, 10 p.m. 17.7 ppb (17) 8.1 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.21 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 23, 2020, 9 p.m. 11.7 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.2 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 23, 2020, 8 p.m. 11.5 ppb (11) 5.4 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 23, 2020, 7 p.m. 9.2 ppb (9) 4.6 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A N/A 9.0
 
Nov. 23, 2020, 6 p.m. 5.2 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 0.0 μg/m3 (0) 5.0
 
Nov. 23, 2020, 5 p.m. 4.2 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A -1.0 μg/m3 (0) 4.0
 
Nov. 23, 2020, 4 p.m. 3.2 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A -1.0 μg/m3 (0) 4.0
 
Nov. 23, 2020, 3 p.m. 3.6 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 0.0 μg/m3 (0) 4.0
 
Nov. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
Nov. 23, 2020, 1 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 2.0 μg/m3 (9) 9.0
 
Nov. 23, 2020, noon 6.2 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 23, 2020, 11 a.m. 6.1 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 23, 2020, 10 a.m. 5.4 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 23, 2020, 9 a.m. 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Nov. 23, 2020, 7 a.m. 51.8 ppb (49) 27.3 ppb (26) N/A 25.0 ppb (24) N/A N/A N/A 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 23, 2020, 6 a.m. 48.1 ppb (46) 24.6 ppb (24) N/A 23.0 ppb (22) N/A N/A N/A 0.31 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 23, 2020, 5 a.m. 39.2 ppb (37) 19.9 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 23, 2020, 4 a.m. 30.6 ppb (29) 11.7 ppb (12) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 23, 2020, 3 a.m. 31.8 ppb (30) 15.5 ppb (15) N/A 16.0 ppb (16) N/A N/A N/A 0.35 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Nov. 23, 2020, 2 a.m. 36.3 ppb (35) 16.2 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 23, 2020, 1 a.m. 37.1 ppb (35) 15.8 ppb (15) N/A 21.0 ppb (20) N/A N/A N/A 0.46 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 23, 2020, midnight 33.9 ppb (32) 15.2 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 22, 2020, 11 p.m. 32.9 ppb (32) 13.1 ppb (13) N/A 20.0 ppb (19) N/A N/A N/A 0.43 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 22, 2020, 10 p.m. 37.5 ppb (36) 18.6 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.46 ppb (6) N/A 8.0 μg/m3 (34) 36.0
 
Nov. 22, 2020, 9 p.m. 27.8 ppb (27) 13.4 ppb (13) N/A 14.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 27.0
 
Nov. 22, 2020, 8 p.m. 21.8 ppb (21) 10.7 ppb (11) N/A 11.0 ppb (11) N/A N/A N/A 0.36 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 22, 2020, 7 p.m. 20.9 ppb (20) 12.1 ppb (12) N/A 9.0 ppb (9) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 22, 2020, 6 p.m. 21.1 ppb (20) 12.3 ppb (12) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 22, 2020, 5 p.m. 19.7 ppb (19) 12.0 ppb (12) N/A 8.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (13) 19.0
 
Nov. 22, 2020, 4 p.m. 17.8 ppb (17) 11.1 ppb (11) 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
 
Nov. 22, 2020, 3 p.m. 19.6 ppb (19) 11.7 ppb (12) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 22, 2020, 2 p.m. 17.0 ppb (17) 8.6 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 22, 2020, 1 p.m. 19.3 ppb (19) 9.0 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 22, 2020, noon 17.4 ppb (17) 8.0 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 22, 2020, 11 a.m. 18.9 ppb (18) 9.0 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 22, 2020, 10 a.m. 15.8 ppb (15) 6.7 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.22 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 22, 2020, 9 a.m. 12.9 ppb (13) 5.4 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 22, 2020, 8 a.m. 13.9 ppb (14) 5.4 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 22, 2020, 7 a.m. 15.5 ppb (15) 6.1 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
Nov. 22, 2020, 6 a.m. 19.7 ppb (19) 6.2 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.28 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 22, 2020, 5 a.m. 13.6 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 22, 2020, 4 a.m. 19.3 ppb (19) 4.1 ppb (4) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Nov. 22, 2020, 3 a.m. 18.6 ppb (18) 4.8 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 22, 2020, 2 a.m. 19.9 ppb (19) 5.1 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.41 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 22, 2020, 1 a.m. 24.6 ppb (24) 6.9 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Nov. 22, 2020, midnight 18.2 ppb (18) 3.9 ppb (4) N/A 14.0 ppb (14) N/A N/A N/A 0.36 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Nov. 21, 2020, 11 p.m. 18.3 ppb (18) 4.1 ppb (4) N/A 14.0 ppb (14) N/A N/A N/A 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 21, 2020, 10 p.m. 17.1 ppb (17) 3.0 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 21, 2020, 9 p.m. 14.1 ppb (14) 2.7 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 21, 2020, 8 p.m. 13.5 ppb (13) 2.7 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 21, 2020, 7 p.m. 9.4 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 21, 2020, 6 p.m. 9.4 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 21, 2020, 5 p.m. 12.4 ppb (12) 3.7 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 21, 2020, 4 p.m. 18.6 ppb (18) 6.5 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 21, 2020, 3 p.m. 29.6 ppb (28) 11.4 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 21, 2020, 2 p.m. 50.1 ppb (48) 30.6 ppb (29) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (6) N/A 11.0 μg/m3 (46) 48.0
 
Nov. 21, 2020, 1 p.m. 65.7 ppb (64) 46.2 ppb (44) N/A 20.0 ppb (19) N/A N/A N/A 0.51 ppb (6) N/A 17.0 μg/m3 (62) 64.0
 
Nov. 21, 2020, noon 72.2 ppb (71) 52.4 ppb (50) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 11.0 μg/m3 (46) 71.0
 
Nov. 21, 2020, 11 a.m. 85.7 ppb (85) 65.3 ppb (64) N/A 20.0 ppb (19) N/A N/A N/A 0.49 ppb (6) N/A 10.0 μg/m3 (42) 85.0
 
Nov. 21, 2020, 10 a.m. 100.9 ppb (101) 80.3 ppb (80) N/A 21.0 ppb (20) N/A N/A N/A 0.46 ppb (6) N/A 11.0 μg/m3 (46) 101.0
 
Nov. 21, 2020, 9 a.m. 64.0 ppb (62) 43.4 ppb (41) N/A 21.0 ppb (20) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 62.0
 
Nov. 21, 2020, 8 a.m. 99.8 ppb (100) 75.1 ppb (74) N/A 25.0 ppb (24) N/A N/A N/A 0.4 ppb (5) N/A 12.0 μg/m3 (50) 100.0
 
Nov. 21, 2020, 7 a.m. 86.3 ppb (86) 62.6 ppb (61) N/A 24.0 ppb (23) N/A N/A N/A 0.43 ppb (5) N/A 16.0 μg/m3 (60) 86.0
 
Nov. 21, 2020, 6 a.m. 103.1 ppb (102) 75.9 ppb (75) N/A 27.0 ppb (26) N/A N/A N/A 0.46 ppb (6) N/A 16.0 μg/m3 (60) 102.0
 
Nov. 21, 2020, 5 a.m. 114.4 ppb (104) 87.1 ppb (87) N/A 27.0 ppb (26) N/A N/A N/A 0.48 ppb (6) N/A 20.0 μg/m3 (68) 104.0
 
Nov. 21, 2020, 4 a.m. 114.3 ppb (104) 86.2 ppb (86) N/A 28.0 ppb (27) N/A N/A N/A N/A N/A 20.0 μg/m3 (68) 104.0
 
Nov. 21, 2020, 3 a.m. 78.8 ppb (78) 52.9 ppb (50) N/A 26.0 ppb (25) N/A N/A N/A 0.43 ppb (5) N/A 17.0 μg/m3 (62) 78.0
 
Nov. 21, 2020, 2 a.m. 114.6 ppb (104) 81.6 ppb (81) N/A 33.0 ppb (32) N/A N/A N/A 0.55 ppb (7) N/A 15.0 μg/m3 (58) 104.0
 
Nov. 21, 2020, 1 a.m. 113.9 ppb (104) 78.7 ppb (78) N/A 35.0 ppb (34) N/A N/A N/A 0.62 ppb (7) N/A 23.0 μg/m3 (74) 104.0
 
Nov. 21, 2020, midnight 149.3 ppb (111) 110.9 ppb (103) N/A 38.0 ppb (36) N/A N/A N/A 0.45 ppb (6) N/A 23.0 μg/m3 (74) 111.0
 
Nov. 20, 2020, 11 p.m. 64.2 ppb (62) 32.4 ppb (31) N/A 32.0 ppb (31) N/A N/A N/A 0.38 ppb (5) N/A 10.0 μg/m3 (42) 62.0
 
Nov. 20, 2020, 10 p.m. 39.3 ppb (38) 15.2 ppb (15) N/A 24.0 ppb (23) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 20, 2020, 9 p.m. 54.5 ppb (52) 23.3 ppb (22) N/A 31.0 ppb (30) N/A N/A N/A 0.48 ppb (6) N/A 8.0 μg/m3 (34) 52.0
 
Nov. 20, 2020, 8 p.m. 58.0 ppb (56) 29.9 ppb (29) N/A 28.0 ppb (27) N/A N/A N/A 0.47 ppb (6) N/A 6.0 μg/m3 (25) 56.0
 
Nov. 20, 2020, 7 p.m. 46.4 ppb (44) 25.1 ppb (24) N/A 21.0 ppb (20) N/A N/A N/A 0.45 ppb (6) N/A 9.0 μg/m3 (38) 44.0
 
Nov. 20, 2020, 6 p.m. 54.3 ppb (52) 30.5 ppb (29) N/A 24.0 ppb (23) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 52.0
 
Nov. 20, 2020, 5 p.m. 50.9 ppb (49) 29.7 ppb (29) N/A 21.0 ppb (20) N/A N/A N/A 0.41 ppb (5) N/A 9.0 μg/m3 (38) 49.0
 
Nov. 20, 2020, 4 p.m. 54.4 ppb (52) 33.4 ppb (32) N/A 21.0 ppb (20) N/A N/A N/A 0.47 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 20, 2020, 3 p.m. 59.8 ppb (58) 39.0 ppb (37) N/A 21.0 ppb (20) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 58.0
 
Nov. 20, 2020, 2 p.m. 65.9 ppb (64) 40.1 ppb (38) N/A 26.0 ppb (25) N/A N/A N/A 0.46 ppb (6) N/A 12.0 μg/m3 (50) 64.0
 
Nov. 20, 2020, 1 p.m. 94.1 ppb (94) 62.9 ppb (61) N/A 31.0 ppb (30) N/A N/A N/A 0.75 ppb (10) N/A 12.0 μg/m3 (50) 94.0
 
Nov. 20, 2020, noon 112.3 ppb (104) 81.8 ppb (81) N/A 31.0 ppb (30) N/A N/A N/A 0.6 ppb (7) N/A 12.0 μg/m3 (50) 104.0
 
Nov. 20, 2020, 11 a.m. 78.6 ppb (78) 49.3 ppb (47) N/A 29.0 ppb (28) N/A N/A N/A 0.51 ppb (6) N/A 10.0 μg/m3 (42) 78.0
 
Nov. 20, 2020, 10 a.m. 102.2 ppb (102) 69.0 ppb (67) N/A 33.0 ppb (32) N/A N/A N/A 0.51 ppb (6) N/A 11.0 μg/m3 (46) 102.0
 
Nov. 20, 2020, 9 a.m. 91.6 ppb (92) 57.3 ppb (55) N/A 34.0 ppb (33) N/A N/A N/A 0.4 ppb (5) N/A 9.0 μg/m3 (38) 92.0
 
Nov. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 20, 2020, 7 a.m. 51.7 ppb (49) 28.6 ppb (27) N/A 23.0 ppb (22) N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 49.0
 
Nov. 20, 2020, 6 a.m. 70.1 ppb (69) 43.1 ppb (41) N/A 27.0 ppb (26) N/A N/A N/A 0.26 ppb (4) N/A 11.0 μg/m3 (46) 69.0
 
Nov. 20, 2020, 5 a.m. 58.6 ppb (56) 28.5 ppb (27) N/A 30.0 ppb (29) N/A N/A N/A 0.31 ppb (4) N/A 7.0 μg/m3 (30) 56.0
 
Nov. 20, 2020, 4 a.m. 58.3 ppb (56) 30.5 ppb (29) N/A 28.0 ppb (27) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 56.0
 
Nov. 20, 2020, 3 a.m. 53.0 ppb (50) 26.3 ppb (25) N/A 27.0 ppb (26) N/A N/A N/A 0.14 ppb (2) N/A 10.0 μg/m3 (42) 50.0
 
Nov. 20, 2020, 2 a.m. 44.6 ppb (43) 21.5 ppb (21) N/A 23.0 ppb (22) N/A N/A N/A 0.17 ppb (3) N/A 10.0 μg/m3 (42) 43.0
 
Nov. 20, 2020, 1 a.m. 53.8 ppb (51) 29.0 ppb (28) N/A 25.0 ppb (24) N/A N/A N/A 0.22 ppb (3) N/A 9.0 μg/m3 (38) 51.0
 
Nov. 20, 2020, midnight 84.8 ppb (84) 48.9 ppb (47) N/A 36.0 ppb (34) N/A N/A N/A 0.4 ppb (5) N/A 10.0 μg/m3 (42) 84.0
 
Nov. 19, 2020, 11 p.m. 91.5 ppb (91) 54.7 ppb (52) N/A 37.0 ppb (35) N/A N/A N/A 0.46 ppb (6) N/A 15.0 μg/m3 (58) 91.0
 
Nov. 19, 2020, 10 p.m. 76.0 ppb (75) 44.2 ppb (42) N/A 32.0 ppb (31) N/A N/A N/A 0.37 ppb (5) N/A 9.0 μg/m3 (38) 75.0
 
Nov. 19, 2020, 9 p.m. 58.0 ppb (56) 33.4 ppb (32) N/A 25.0 ppb (24) N/A N/A N/A 0.3 ppb (4) N/A 7.0 μg/m3 (30) 56.0
 
Nov. 19, 2020, 8 p.m. 44.9 ppb (43) 25.6 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.22 ppb (3) N/A 7.0 μg/m3 (30) 43.0
 
Nov. 19, 2020, 7 p.m. 44.5 ppb (42) 26.6 ppb (26) N/A 18.0 ppb (17) N/A N/A N/A 0.21 ppb (3) N/A 4.0 μg/m3 (17) 42.0
 
Nov. 19, 2020, 6 p.m. 44.2 ppb (42) 25.7 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 42.0
 
Nov. 19, 2020, 5 p.m. 38.9 ppb (37) 25.2 ppb (24) N/A 14.0 ppb (14) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 37.0
 
Nov. 19, 2020, 4 p.m. 40.2 ppb (38) 25.3 ppb (24) N/A 15.0 ppb (15) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 38.0
 
Nov. 19, 2020, 3 p.m. 53.5 ppb (51) 35.1 ppb (34) N/A 18.0 ppb (17) N/A N/A N/A 0.2 ppb (3) N/A 7.0 μg/m3 (30) 51.0
 
Nov. 19, 2020, 2 p.m. 92.8 ppb (93) 64.6 ppb (63) N/A 28.0 ppb (27) N/A N/A N/A 0.45 ppb (6) N/A 13.0 μg/m3 (53) 93.0
 
Nov. 19, 2020, 1 p.m. 144.2 ppb (110) 111.6 ppb (104) N/A 33.0 ppb (32) N/A N/A N/A 0.64 ppb (7) N/A 17.0 μg/m3 (62) 110.0
 
Nov. 19, 2020, noon 149.3 ppb (111) 119.7 ppb (105) N/A 30.0 ppb (29) N/A N/A N/A 0.53 ppb (6) N/A 14.0 μg/m3 (55) 111.0
 
Nov. 19, 2020, 11 a.m. 141.4 ppb (109) 111.3 ppb (103) N/A 30.0 ppb (29) N/A N/A N/A 0.42 ppb (5) N/A 11.0 μg/m3 (46) 109.0
 
Nov. 19, 2020, 10 a.m. 111.9 ppb (104) 84.9 ppb (84) N/A 27.0 ppb (26) N/A N/A N/A 0.38 ppb (5) N/A 15.0 μg/m3 (58) 104.0
 
Nov. 19, 2020, 9 a.m. 149.0 ppb (111) 117.4 ppb (105) N/A 32.0 ppb (31) N/A N/A N/A 0.36 ppb (5) N/A 11.0 μg/m3 (46) 111.0
 
Nov. 19, 2020, 8 a.m. 113.0 ppb (104) 86.8 ppb (86) N/A 26.0 ppb (25) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (34) 104.0
 
Nov. 19, 2020, 7 a.m. 64.9 ppb (63) 42.7 ppb (41) N/A 22.0 ppb (21) N/A N/A N/A 0.3 ppb (4) N/A 8.0 μg/m3 (34) 63.0
 
Nov. 19, 2020, 6 a.m. 68.7 ppb (67) 46.4 ppb (44) N/A 22.0 ppb (21) N/A N/A N/A 0.36 ppb (5) N/A 12.0 μg/m3 (50) 67.0
 
Nov. 19, 2020, 5 a.m. 49.8 ppb (47) 31.8 ppb (30) N/A 18.0 ppb (17) N/A N/A N/A 0.28 ppb (4) N/A 15.0 μg/m3 (58) 58.0