ID: 2375

AQSQID: 240270006

Site Name: Howard County Near Road

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

Updated: Jan. 17, 2022, 3:33 p.m.

Location: Laurel (I 95), MD

Reporting: True, Located: True

Current AQI: 16.0

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
Jan. 17, 2022, 2 p.m. 16.3 ppb (16) 8.5 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 16.0
 
Jan. 17, 2022, 1 p.m. 18.6 ppb (18) 9.2 ppb (9) 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
 
Jan. 17, 2022, noon 25.4 ppb (24) 11.9 ppb (12) N/A 14.0 ppb (14) N/A N/A N/A 0.26 ppb (4) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 17, 2022, 11 a.m. 28.5 ppb (27) 14.5 ppb (14) N/A 14.0 ppb (14) N/A N/A N/A 0.27 ppb (4) N/A 3.0 μg/m3 (13) 27.0
 
Jan. 17, 2022, 10 a.m. 25.6 ppb (25) 13.4 ppb (13) N/A 12.0 ppb (12) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
Jan. 17, 2022, 9 a.m. 18.8 ppb (18) 8.9 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
Jan. 17, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
Jan. 17, 2022, 7 a.m. 13.2 ppb (13) 5.4 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 17, 2022, 6 a.m. 22.5 ppb (22) 8.8 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 17, 2022, 5 a.m. 14.4 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.17 ppb (3) N/A 0.0 μg/m3 (0) 14.0
 
Jan. 17, 2022, 4 a.m. 11.7 ppb (12) 3.7 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 12.0
 
Jan. 17, 2022, 3 a.m. 9.5 ppb (9) 2.5 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.12 ppb (2) N/A 0.0 μg/m3 (0) 9.0
 
Jan. 17, 2022, 2 a.m. 10.5 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.13 ppb (2) N/A 0.0 μg/m3 (0) 10.0
 
Jan. 17, 2022, 1 a.m. 16.2 ppb (16) 3.5 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 16.0
 
Jan. 17, 2022, midnight 16.5 ppb (16) 3.2 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2022, 11 p.m. 19.6 ppb (19) 3.8 ppb (4) N/A 16.0 ppb (16) N/A N/A N/A 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2022, 10 p.m. 25.4 ppb (24) 6.0 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2022, 9 p.m. 26.3 ppb (25) 6.0 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.21 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2022, 8 p.m. 36.1 ppb (35) 12.1 ppb (12) N/A 24.0 ppb (23) N/A N/A N/A 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2022, 7 p.m. 37.4 ppb (36) 14.5 ppb (14) N/A 23.0 ppb (22) N/A N/A N/A 0.35 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2022, 6 p.m. 37.4 ppb (36) 15.5 ppb (15) N/A 22.0 ppb (21) N/A N/A N/A 0.34 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, 5 p.m. 36.3 ppb (35) 15.3 ppb (15) N/A 21.0 ppb (20) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2022, 4 p.m. 46.6 ppb (44) 23.8 ppb (23) N/A 23.0 ppb (22) N/A N/A N/A 0.39 ppb (5) N/A 9.0 μg/m3 (38) 44.0
 
Jan. 16, 2022, 3 p.m. 39.3 ppb (38) 18.6 ppb (18) N/A 21.0 ppb (20) N/A N/A N/A 0.35 ppb (4) N/A 8.0 μg/m3 (34) 38.0
 
Jan. 16, 2022, 2 p.m. 39.1 ppb (37) 19.4 ppb (19) N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (4) N/A 8.0 μg/m3 (34) 37.0
 
Jan. 16, 2022, 1 p.m. 46.8 ppb (45) 23.6 ppb (23) N/A 23.0 ppb (22) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (30) 45.0
 
Jan. 16, 2022, noon 45.1 ppb (43) 18.4 ppb (18) N/A 27.0 ppb (26) N/A N/A N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 43.0
 
Jan. 16, 2022, 11 a.m. 37.1 ppb (35) 13.4 ppb (13) N/A 24.0 ppb (23) N/A N/A N/A 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2022, 10 a.m. 29.9 ppb (29) 8.4 ppb (8) N/A 21.0 ppb (20) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2022, 9 a.m. 46.8 ppb (45) 18.8 ppb (18) N/A 28.0 ppb (27) N/A N/A N/A 0.26 ppb (4) N/A 8.0 μg/m3 (34) 45.0
 
Jan. 16, 2022, 8 a.m. 38.0 ppb (36) 14.0 ppb (14) N/A 24.0 ppb (23) N/A N/A N/A 0.27 ppb (4) N/A 8.0 μg/m3 (34) 36.0
 
Jan. 16, 2022, 7 a.m. 28.0 ppb (27) 6.7 ppb (7) N/A 21.0 ppb (20) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2022, 6 a.m. 32.6 ppb (31) 9.8 ppb (10) N/A 23.0 ppb (22) N/A N/A N/A 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2022, 5 a.m. 28.4 ppb (27) 10.1 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.22 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2022, 4 a.m. 25.7 ppb (25) 7.0 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2022, 3 a.m. 29.2 ppb (28) 8.6 ppb (9) N/A 21.0 ppb (20) N/A N/A N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2022, 2 a.m. 25.7 ppb (25) 5.9 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.27 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2022, 1 a.m. 21.7 ppb (21) 6.4 ppb (7) N/A 15.0 ppb (15) N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2022, midnight 20.5 ppb (20) 6.2 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.26 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2022, 11 p.m. 19.4 ppb (19) 6.2 ppb (6) N/A 13.0 ppb (13) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 15, 2022, 10 p.m. 22.9 ppb (22) 8.8 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.28 ppb (4) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 15, 2022, 9 p.m. 16.7 ppb (16) 6.6 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2022, 8 p.m. 11.6 ppb (11) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2022, 7 p.m. 10.4 ppb (10) 4.3 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2022, 6 p.m. 11.2 ppb (11) 5.1 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2022, 5 p.m. 9.2 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 15, 2022, 4 p.m. 6.0 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) N/A 1.0 μg/m3 (5) 6.0
 
Jan. 15, 2022, 3 p.m. 7.5 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 15, 2022, 2 p.m. 10.3 ppb (10) 4.5 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2022, 1 p.m. 10.1 ppb (10) 3.6 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2022, noon 17.4 ppb (17) 6.8 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2022, 11 a.m. 17.7 ppb (17) 8.1 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2022, 10 a.m. 17.3 ppb (17) 7.8 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.18 ppb (3) N/A 1.0 μg/m3 (5) 17.0
 
Jan. 15, 2022, 9 a.m. 17.6 ppb (17) 8.1 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.17 ppb (3) N/A 0.0 μg/m3 (0) 17.0
 
Jan. 15, 2022, 8 a.m. 22.8 ppb (22) 9.3 ppb (9) N/A 13.0 ppb (13) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 22.0
 
Jan. 15, 2022, 7 a.m. 19.0 ppb (18) 8.3 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
Jan. 15, 2022, 6 a.m. 23.2 ppb (22) 9.5 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 22.0
 
Jan. 15, 2022, 5 a.m. 15.8 ppb (15) 5.9 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 15.0
 
Jan. 15, 2022, 4 a.m. 18.5 ppb (18) 7.6 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 18.0
 
Jan. 15, 2022, 3 a.m. 19.7 ppb (19) 8.4 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A 0.39 ppb (5) N/A 3.0 μg/m3 (13) 19.0
 
Jan. 15, 2022, 2 a.m. 17.3 ppb (17) 7.2 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.39 ppb (5) N/A 3.0 μg/m3 (13) 17.0
 
Jan. 15, 2022, 1 a.m. 14.7 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 1.0 μg/m3 (5) 14.0
 
Jan. 15, 2022, midnight 21.4 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (13) 21.0
 
Jan. 14, 2022, 11 p.m. 20.4 ppb (20) 8.6 ppb (9) N/A 12.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 14, 2022, 10 p.m. 15.0 ppb (15) 6.0 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (13) 15.0
 
Jan. 14, 2022, 9 p.m. 8.7 ppb (9) 3.3 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
Jan. 14, 2022, 8 p.m. 7.0 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2022, 7 p.m. 8.2 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2022, 6 p.m. 9.2 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2022, 5 p.m. 7.7 ppb (8) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 14, 2022, 4 p.m. 12.3 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.27 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 14, 2022, 3 p.m. 11.4 ppb (11) 4.3 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A N/A 11.0
 
Jan. 14, 2022, 2 p.m. 14.7 ppb (14) 4.7 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.29 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 14, 2022, 1 p.m. 16.2 ppb (16) 4.7 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.3 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 14, 2022, noon 19.9 ppb (19) 4.7 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.28 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 14, 2022, 11 a.m. 32.8 ppb (31) 11.2 ppb (11) N/A 22.0 ppb (21) N/A N/A N/A 0.3 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 14, 2022, 10 a.m. 66.2 ppb (64) 35.8 ppb (34) N/A 30.0 ppb (29) N/A N/A N/A 0.39 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 14, 2022, 9 a.m. 87.1 ppb (87) 55.8 ppb (53) N/A 31.0 ppb (30) N/A N/A N/A 0.43 ppb (5) N/A 26.0 μg/m3 (81) 87.0
 
Jan. 14, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.44 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Jan. 14, 2022, 7 a.m. 112.1 ppb (104) 81.4 ppb (81) N/A 31.0 ppb (30) N/A N/A N/A 0.4 ppb (5) N/A 17.0 μg/m3 (62) 104.0
 
Jan. 14, 2022, 6 a.m. 97.4 ppb (98) 68.2 ppb (67) N/A 29.0 ppb (28) N/A N/A N/A 0.36 ppb (5) N/A 14.0 μg/m3 (55) 98.0
 
Jan. 14, 2022, 5 a.m. 75.2 ppb (74) 44.7 ppb (43) N/A 30.0 ppb (29) N/A N/A N/A 0.39 ppb (5) N/A 14.0 μg/m3 (55) 74.0
 
Jan. 14, 2022, 4 a.m. 83.3 ppb (83) 50.6 ppb (48) N/A 33.0 ppb (32) N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 83.0
 
Jan. 14, 2022, 3 a.m. 107.9 ppb (103) 73.3 ppb (72) N/A 35.0 ppb (34) N/A N/A N/A 0.4 ppb (5) N/A 19.0 μg/m3 (66) 103.0
 
Jan. 14, 2022, 2 a.m. 111.3 ppb (103) 76.8 ppb (76) N/A 34.0 ppb (33) N/A N/A N/A 0.35 ppb (4) N/A 18.0 μg/m3 (64) 103.0
 
Jan. 14, 2022, 1 a.m. 107.1 ppb (103) 73.0 ppb (72) N/A 34.0 ppb (33) N/A N/A N/A 0.35 ppb (4) N/A 16.0 μg/m3 (60) 103.0
 
Jan. 14, 2022, midnight 68.0 ppb (66) 34.1 ppb (33) N/A 34.0 ppb (33) N/A N/A N/A 0.33 ppb (4) N/A 17.0 μg/m3 (62) 66.0
 
Jan. 13, 2022, 11 p.m. 89.4 ppb (89) 51.8 ppb (49) N/A 38.0 ppb (36) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (60) 89.0
 
Jan. 13, 2022, 10 p.m. 84.4 ppb (84) 45.2 ppb (43) N/A 39.0 ppb (37) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (60) 84.0
 
Jan. 13, 2022, 9 p.m. 81.4 ppb (81) 42.3 ppb (40) N/A 39.0 ppb (37) N/A N/A N/A 0.36 ppb (5) N/A 20.0 μg/m3 (68) 81.0
 
Jan. 13, 2022, 8 p.m. 101.4 ppb (102) 59.9 ppb (58) N/A 41.0 ppb (39) N/A N/A N/A 0.5 ppb (6) N/A 23.0 μg/m3 (74) 102.0
 
Jan. 13, 2022, 7 p.m. 120.8 ppb (105) 78.1 ppb (77) N/A 43.0 ppb (41) N/A N/A N/A 0.57 ppb (7) N/A 18.0 μg/m3 (64) 105.0
 
Jan. 13, 2022, 6 p.m. 134.7 ppb (108) 89.0 ppb (89) N/A 46.0 ppb (44) N/A N/A N/A 0.55 ppb (7) N/A 25.0 μg/m3 (79) 108.0
 
Jan. 13, 2022, 5 p.m. 116.2 ppb (104) 76.7 ppb (76) N/A 40.0 ppb (38) N/A N/A N/A 0.47 ppb (6) N/A 23.0 μg/m3 (74) 104.0
 
Jan. 13, 2022, 4 p.m. 167.7 ppb (114) 121.6 ppb (105) N/A 46.0 ppb (44) N/A N/A N/A 0.65 ppb (8) N/A 24.0 μg/m3 (77) 114.0
 
Jan. 13, 2022, 3 p.m. 147.1 ppb (110) 112.2 ppb (104) N/A 35.0 ppb (34) N/A N/A N/A 0.69 ppb (8) N/A 17.0 μg/m3 (62) 110.0
 
Jan. 13, 2022, 2 p.m. 123.8 ppb (106) 95.9 ppb (96) N/A 28.0 ppb (27) N/A N/A N/A 0.68 ppb (8) N/A 18.0 μg/m3 (64) 106.0
 
Jan. 13, 2022, 1 p.m. 122.6 ppb (106) 98.0 ppb (98) N/A 25.0 ppb (24) N/A N/A N/A 0.55 ppb (7) N/A 16.0 μg/m3 (60) 106.0
 
Jan. 13, 2022, noon 95.4 ppb (96) 70.6 ppb (69) N/A 25.0 ppb (24) N/A N/A N/A 0.56 ppb (7) N/A 12.0 μg/m3 (50) 96.0
 
Jan. 13, 2022, 11 a.m. 108.4 ppb (103) 83.3 ppb (83) N/A 25.0 ppb (24) N/A N/A N/A 0.46 ppb (6) N/A 13.0 μg/m3 (53) 103.0
 
Jan. 13, 2022, 10 a.m. 112.9 ppb (104) 85.8 ppb (85) N/A 27.0 ppb (26) N/A N/A N/A 0.44 ppb (5) N/A 14.0 μg/m3 (55) 104.0
 
Jan. 13, 2022, 9 a.m. 112.7 ppb (104) 83.6 ppb (83) N/A 29.0 ppb (28) N/A N/A N/A 0.52 ppb (6) N/A 18.0 μg/m3 (64) 104.0
 
Jan. 13, 2022, 8 a.m. 135.2 ppb (108) 104.4 ppb (102) N/A 31.0 ppb (30) N/A N/A N/A 0.73 ppb (8) N/A 12.0 μg/m3 (50) 108.0
 
Jan. 13, 2022, 7 a.m. 115.8 ppb (104) 86.4 ppb (86) N/A 29.0 ppb (28) N/A N/A N/A 0.59 ppb (7) N/A 14.0 μg/m3 (55) 104.0
 
Jan. 13, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.54 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 13, 2022, 5 a.m. 136.3 ppb (108) 101.1 ppb (102) N/A 35.0 ppb (34) N/A N/A N/A 0.53 ppb (6) N/A 17.0 μg/m3 (62) 108.0
 
Jan. 13, 2022, 4 a.m. 99.0 ppb (99) 66.8 ppb (65) N/A 32.0 ppb (31) N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 99.0
 
Jan. 13, 2022, 3 a.m. 142.1 ppb (109) 104.0 ppb (102) N/A 38.0 ppb (36) N/A N/A N/A 0.4 ppb (5) N/A 13.0 μg/m3 (53) 109.0
 
Jan. 13, 2022, 2 a.m. 81.6 ppb (81) 44.0 ppb (42) N/A 38.0 ppb (36) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (34) 81.0
 
Jan. 13, 2022, 1 a.m. 45.5 ppb (43) 17.4 ppb (17) N/A 28.0 ppb (27) N/A N/A N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 43.0
 
Jan. 13, 2022, midnight 44.2 ppb (42) 16.3 ppb (16) N/A 28.0 ppb (27) N/A N/A N/A 0.28 ppb (4) N/A 9.0 μg/m3 (38) 42.0
 
Jan. 12, 2022, 11 p.m. 45.4 ppb (43) 18.5 ppb (18) N/A 27.0 ppb (26) N/A N/A N/A 0.26 ppb (4) N/A 5.0 μg/m3 (21) 43.0
 
Jan. 12, 2022, 10 p.m. 54.3 ppb (52) 26.1 ppb (25) N/A 28.0 ppb (27) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 52.0
 
Jan. 12, 2022, 9 p.m. 58.3 ppb (56) 29.7 ppb (29) N/A 29.0 ppb (28) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (30) 56.0
 
Jan. 12, 2022, 8 p.m. 58.8 ppb (57) 32.0 ppb (31) N/A 27.0 ppb (26) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 57.0
 
Jan. 12, 2022, 7 p.m. 59.5 ppb (57) 34.5 ppb (33) N/A 25.0 ppb (24) N/A N/A N/A 0.26 ppb (4) N/A 10.0 μg/m3 (42) 57.0
 
Jan. 12, 2022, 6 p.m. 60.0 ppb (58) 36.4 ppb (35) N/A 24.0 ppb (23) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 58.0
 
Jan. 12, 2022, 5 p.m. 53.0 ppb (50) 33.5 ppb (32) N/A 19.0 ppb (18) N/A N/A N/A 0.26 ppb (4) N/A 10.0 μg/m3 (42) 50.0
 
Jan. 12, 2022, 4 p.m. 59.2 ppb (57) 38.2 ppb (37) N/A 21.0 ppb (20) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 57.0
 
Jan. 12, 2022, 3 p.m. 54.7 ppb (52) 36.3 ppb (35) N/A 18.0 ppb (17) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 52.0
 
Jan. 12, 2022, 2 p.m. 58.0 ppb (56) 39.2 ppb (37) N/A 19.0 ppb (18) N/A N/A N/A 0.27 ppb (4) N/A 9.0 μg/m3 (38) 56.0
 
Jan. 12, 2022, 1 p.m. 81.2 ppb (80) 52.8 ppb (50) N/A 28.0 ppb (27) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 80.0
 
Jan. 12, 2022, noon 128.6 ppb (107) 91.5 ppb (91) N/A 37.0 ppb (35) N/A N/A N/A 0.5 ppb (6) N/A 12.0 μg/m3 (50) 107.0
 
Jan. 12, 2022, 11 a.m. 112.5 ppb (104) 78.4 ppb (77) N/A 34.0 ppb (33) N/A N/A N/A 0.49 ppb (6) N/A 9.0 μg/m3 (38) 104.0
 
Jan. 12, 2022, 10 a.m. 89.8 ppb (90) 57.0 ppb (55) N/A 33.0 ppb (32) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 90.0
 
Jan. 12, 2022, 9 a.m. 114.5 ppb (104) 78.2 ppb (77) N/A 36.0 ppb (34) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 104.0
 
Jan. 12, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 12, 2022, 7 a.m. 80.3 ppb (80) 47.7 ppb (45) N/A 33.0 ppb (32) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 80.0
 
Jan. 12, 2022, 6 a.m. 88.6 ppb (88) 54.8 ppb (52) N/A 34.0 ppb (33) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (34) 88.0
 
Jan. 12, 2022, 5 a.m. 84.8 ppb (84) 51.6 ppb (49) N/A 33.0 ppb (32) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 84.0
 
Jan. 12, 2022, 4 a.m. 80.9 ppb (80) 48.0 ppb (46) N/A 33.0 ppb (32) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 80.0
 
Jan. 12, 2022, 3 a.m. 116.6 ppb (104) 79.0 ppb (78) N/A 38.0 ppb (36) N/A N/A N/A 0.53 ppb (6) N/A 15.0 μg/m3 (58) 104.0
 
Jan. 12, 2022, 2 a.m. 115.3 ppb (104) 78.9 ppb (78) N/A 36.0 ppb (34) N/A N/A N/A 0.57 ppb (7) N/A 14.0 μg/m3 (55) 104.0
 
Jan. 12, 2022, 1 a.m. 78.8 ppb (78) 46.4 ppb (44) N/A 32.0 ppb (31) N/A N/A N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 78.0
 
Jan. 12, 2022, midnight 51.9 ppb (49) 27.6 ppb (27) N/A 24.0 ppb (23) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 49.0
 
Jan. 11, 2022, 11 p.m. 35.6 ppb (34) 17.0 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A 0.26 ppb (4) N/A 3.0 μg/m3 (13) 34.0
 
Jan. 11, 2022, 10 p.m. 30.1 ppb (29) 12.0 ppb (12) N/A 18.0 ppb (17) N/A N/A N/A 0.22 ppb (3) N/A 5.0 μg/m3 (21) 29.0
 
Jan. 11, 2022, 9 p.m. 10.5 ppb (10) 3.1 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 11, 2022, 8 p.m. 6.3 ppb (6) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 11, 2022, 7 p.m. 9.0 ppb (9) 4.5 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2022, 6 p.m. 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 11, 2022, 5 p.m. 7.0 ppb (7) 3.4 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 11, 2022, 4 p.m. 8.2 ppb (8) 4.4 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 8.0
 
Jan. 11, 2022, 3 p.m. 8.2 ppb (8) 3.7 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 0.0 μg/m3 (0) 8.0
 
Jan. 11, 2022, 2 p.m. 12.5 ppb (12) 5.9 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2022, 1 p.m. 13.8 ppb (14) 5.7 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.16 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 11, 2022, noon 16.6 ppb (16) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
Jan. 11, 2022, 11 a.m. 18.3 ppb (18) 7.8 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 11, 2022, 10 a.m. 20.6 ppb (20) 9.3 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.16 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2022, 9 a.m. 16.4 ppb (16) 6.3 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 11, 2022, 8 a.m. 14.5 ppb (14) 5.8 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (13) 14.0
 
Jan. 11, 2022, 7 a.m. 12.7 ppb (12) 5.5 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 11, 2022, 6 a.m. 15.3 ppb (15) 7.2 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 11, 2022, 5 a.m. 20.4 ppb (20) 8.6 ppb (9) N/A 12.0 ppb (12) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (13) 20.0
 
Jan. 11, 2022, 4 a.m. 16.8 ppb (16) 6.9 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 16.0
 
Jan. 11, 2022, 3 a.m. 11.8 ppb (12) 5.5 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (9) 12.0
 
Jan. 11, 2022, 2 a.m. 11.0 ppb (11) 4.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 11, 2022, 1 a.m. 10.0 ppb (10) 4.5 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (9) 10.0
 
Jan. 11, 2022, midnight 11.1 ppb (11) 4.1 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 10, 2022, 11 p.m. 13.2 ppb (13) 5.2 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 10, 2022, 10 p.m. 14.1 ppb (14) 5.3 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2022, 9 p.m. 16.9 ppb (16) 5.7 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 0.0 μg/m3 (0) 16.0
 
Jan. 10, 2022, 8 p.m. 9.7 ppb (10) 3.4 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2022, 7 p.m. 6.3 ppb (6) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 10, 2022, 6 p.m. 5.6 ppb (6) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
Jan. 10, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 10, 2022, 4 p.m. 5.3 ppb (5) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
Jan. 10, 2022, 3 p.m. 5.8 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0