AQSQID: 060371201

Site Name: Reseda

Location: Reseda (Reseda), CA

Reporting: True, Located: True

Current AQI: 42.0

Reseda (Reseda) CA, US: 34.1992, -118.5331

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2020, 1 p.m. 45.0 ppb (42) 28.0 ppb (26) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 0.59 ppb (7) N/A 8.0 μg/m3 (33) 42.0
 
Jan. 22, 2020, noon 32.1 ppb (30) 14.4 ppb (13) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.48 ppb (5) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 22, 2020, 11 a.m. 29.7 ppb (28) 10.7 ppb (10) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.49 ppb (5) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 22, 2020, 10 a.m. 20.9 ppb (19) 2.0 ppb (2) N/A 19.0 ppb (18) N/A N/A 5.0 ppb (4) 0.41 ppb (5) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 22, 2020, 9 a.m. 18.2 ppb (17) 1.7 ppb (2) N/A 17.0 ppb (16) N/A N/A 9.0 ppb (7) 0.34 ppb (4) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 22, 2020, 8 a.m. 14.8 ppb (14) 0.7 ppb (1) N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.32 ppb (4) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 22, 2020, 7 a.m. 8.4 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 6 a.m. 6.7 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.24 ppb (3) N/A 4.3 μg/m3 (18) 23.0
 
Jan. 22, 2020, 5 a.m. 9.4 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.29 ppb (3) N/A 1.8 μg/m3 (8) 22.0
 
Jan. 22, 2020, 4 a.m. 11.1 ppb (10) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.3 ppb (3) N/A 2.4 μg/m3 (10) 21.0
 
Jan. 22, 2020, 3 a.m. 8.7 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.27 ppb (3) N/A 3.1 μg/m3 (13) 24.0
 
Jan. 22, 2020, 2 a.m. 5.4 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.23 ppb (3) N/A 5.3 μg/m3 (22) 28.0
 
Jan. 22, 2020, 1 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.26 ppb (3) N/A 3.9 μg/m3 (16) 29.0
 
Jan. 22, 2020, midnight 5.1 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.22 ppb (2) N/A 0.6 μg/m3 (2) 32.0
 
Jan. 21, 2020, 11 p.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.2 ppb (2) N/A 1.6 μg/m3 (7) 33.0
 
Jan. 21, 2020, 10 p.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.19 ppb (2) N/A 6.1 μg/m3 (25) 33.0
 
Jan. 21, 2020, 9 p.m. 3.7 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.2 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
Jan. 21, 2020, 8 p.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.21 ppb (2) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 21, 2020, 7 p.m. 5.5 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.23 ppb (3) N/A 5.8 μg/m3 (24) 30.0
 
Jan. 21, 2020, 6 p.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.23 ppb (3) N/A 3.3 μg/m3 (14) 29.0
 
Jan. 21, 2020, 5 p.m. 15.0 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) 0.36 ppb (4) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 21, 2020, 4 p.m. 25.7 ppb (24) 7.9 ppb (7) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) 0.45 ppb (5) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 21, 2020, 3 p.m. 49.0 ppb (45) 25.2 ppb (23) N/A 24.0 ppb (22) N/A N/A 5.0 ppb (4) 0.77 ppb (9) N/A 9.9 μg/m3 (41) 45.0
 
Jan. 21, 2020, 2 p.m. 37.2 ppb (34) 16.1 ppb (15) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 0.65 ppb (7) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 21, 2020, 1 p.m. 15.6 ppb (14) 1.9 ppb (2) N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) 0.36 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 21, 2020, noon 9.5 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.27 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 21, 2020, 11 a.m. 8.2 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.26 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 21, 2020, 10 a.m. 8.9 ppb (8) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) 0.27 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2020, 9 a.m. 12.8 ppb (12) 0.3 ppb (0) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.32 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 21, 2020, 8 a.m. 15.0 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.32 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 21, 2020, 7 a.m. 9.4 ppb (9) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.28 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 21, 2020, 6 a.m. 8.1 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.26 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 21, 2020, 5 a.m. 13.7 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 25.0 ppb (19) 0.31 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 21, 2020, 4 a.m. 19.4 ppb (18) 1.1 ppb (1) N/A 18.0 ppb (17) N/A N/A 20.0 ppb (15) 0.37 ppb (4) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 21, 2020, 3 a.m. 21.3 ppb (20) 0.7 ppb (1) N/A 21.0 ppb (19) N/A N/A 18.0 ppb (14) 0.38 ppb (4) N/A 19.3 μg/m3 (66) 66.0
 
Jan. 21, 2020, 2 a.m. 25.8 ppb (24) 0.7 ppb (1) N/A 25.0 ppb (23) N/A N/A 17.0 ppb (13) 0.45 ppb (5) N/A 15.8 μg/m3 (58) 58.0
 
Jan. 21, 2020, 1 a.m. 25.2 ppb (23) 0.8 ppb (1) N/A 24.0 ppb (22) N/A N/A 20.0 ppb (15) 0.47 ppb (5) N/A 17.1 μg/m3 (61) 61.0
 
Jan. 21, 2020, midnight 19.3 ppb (18) 1.2 ppb (1) N/A 18.0 ppb (17) N/A N/A 26.0 ppb (20) 0.4 ppb (4) N/A 16.6 μg/m3 (60) 60.0
 
Jan. 20, 2020, 11 p.m. 22.1 ppb (20) 3.0 ppb (3) N/A 19.0 ppb (18) N/A N/A 26.0 ppb (20) 0.47 ppb (5) N/A 14.8 μg/m3 (56) 56.0
 
Jan. 20, 2020, 10 p.m. 20.7 ppb (19) 2.7 ppb (3) N/A 18.0 ppb (17) N/A N/A 29.0 ppb (22) 0.43 ppb (5) N/A 14.6 μg/m3 (56) 56.0
 
Jan. 20, 2020, 9 p.m. 22.3 ppb (21) 4.7 ppb (4) N/A 18.0 ppb (17) N/A N/A 29.0 ppb (22) 0.43 ppb (5) N/A 13.1 μg/m3 (52) 52.0
 
Jan. 20, 2020, 8 p.m. 27.1 ppb (25) 8.5 ppb (8) N/A 19.0 ppb (18) N/A N/A 26.0 ppb (20) 0.48 ppb (5) N/A 12.6 μg/m3 (51) 51.0
 
Jan. 20, 2020, 7 p.m. 45.0 ppb (42) 18.4 ppb (17) N/A 27.0 ppb (25) N/A N/A 14.0 ppb (11) 0.66 ppb (7) N/A 20.9 μg/m3 (69) 69.0
 
Jan. 20, 2020, 6 p.m. 77.0 ppb (74) 44.3 ppb (41) N/A 33.0 ppb (31) N/A N/A 5.0 ppb (4) 0.98 ppb (11) N/A 19.2 μg/m3 (65) 74.0
 
Jan. 20, 2020, 5 p.m. 85.5 ppb (84) 56.6 ppb (53) N/A 29.0 ppb (27) N/A N/A 4.0 ppb (3) 1.1 ppb (12) N/A 20.6 μg/m3 (68) 84.0
 
Jan. 20, 2020, 4 p.m. 84.6 ppb (83) 57.5 ppb (54) N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) 1.15 ppb (13) N/A 12.5 μg/m3 (51) 83.0
 
Jan. 20, 2020, 3 p.m. 74.6 ppb (72) 49.7 ppb (46) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 1.0 ppb (11) N/A 9.4 μg/m3 (39) 72.0
 
Jan. 20, 2020, 2 p.m. 58.1 ppb (54) 34.7 ppb (32) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.83 ppb (9) N/A 10.1 μg/m3 (42) 54.0
 
Jan. 20, 2020, 1 p.m. 56.2 ppb (52) 33.6 ppb (31) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.81 ppb (9) N/A 9.9 μg/m3 (41) 52.0
 
Jan. 20, 2020, noon 45.0 ppb (42) 23.6 ppb (22) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.78 ppb (9) N/A 9.0 μg/m3 (38) 42.0
 
Jan. 20, 2020, 11 a.m. 52.1 ppb (48) 29.9 ppb (28) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) 0.89 ppb (10) N/A 8.2 μg/m3 (34) 48.0
 
Jan. 20, 2020, 10 a.m. 70.8 ppb (68) 48.3 ppb (45) N/A 22.0 ppb (20) N/A N/A 3.0 ppb (2) 1.21 ppb (13) N/A 23.3 μg/m3 (74) 74.0
 
Jan. 20, 2020, 9 a.m. 73.2 ppb (70) 48.6 ppb (45) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) 1.28 ppb (14) N/A 25.0 μg/m3 (78) 78.0
 
Jan. 20, 2020, 8 a.m. 76.5 ppb (74) 51.5 ppb (48) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 1.36 ppb (15) N/A 24.3 μg/m3 (76) 76.0
 
Jan. 20, 2020, 7 a.m. 88.9 ppb (87) 60.7 ppb (57) N/A 28.0 ppb (26) N/A N/A 3.0 ppb (2) 1.55 ppb (17) N/A 27.5 μg/m3 (83) 87.0
 
Jan. 20, 2020, 6 a.m. 86.1 ppb (84) 57.9 ppb (54) N/A 28.0 ppb (26) N/A N/A 3.0 ppb (2) 1.54 ppb (17) N/A 27.0 μg/m3 (82) 84.0
 
Jan. 20, 2020, 5 a.m. 86.5 ppb (85) 57.0 ppb (53) N/A 30.0 ppb (28) N/A N/A 3.0 ppb (2) 1.58 ppb (18) N/A 24.5 μg/m3 (77) 85.0
 
Jan. 20, 2020, 4 a.m. 84.1 ppb (82) 53.2 ppb (49) N/A 31.0 ppb (29) N/A N/A 3.0 ppb (2) 1.49 ppb (17) N/A 22.4 μg/m3 (72) 82.0
 
Jan. 20, 2020, 3 a.m. 58.7 ppb (55) 27.4 ppb (25) N/A 31.0 ppb (29) N/A N/A 3.0 ppb (2) 1.01 ppb (11) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 2 a.m. 45.6 ppb (42) 14.5 ppb (13) N/A 31.0 ppb (29) N/A N/A 5.0 ppb (4) 0.75 ppb (8) N/A 9.7 μg/m3 (40) 42.0
 
Jan. 20, 2020, 1 a.m. 27.3 ppb (25) 2.8 ppb (3) N/A 24.0 ppb (22) N/A N/A 13.0 ppb (10) 0.55 ppb (6) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 20, 2020, midnight 18.8 ppb (17) 2.0 ppb (2) N/A 17.0 ppb (16) N/A N/A 22.0 ppb (17) 0.39 ppb (4) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 19, 2020, 11 p.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.28 ppb (3) N/A 6.3 μg/m3 (26) 27.0
 
Jan. 19, 2020, 10 p.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.23 ppb (3) N/A 5.8 μg/m3 (24) 30.0
 
Jan. 19, 2020, 9 p.m. 5.9 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.25 ppb (3) N/A 1.8 μg/m3 (8) 30.0
 
Jan. 19, 2020, 8 p.m. 3.6 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A 2.2 μg/m3 (9) 32.0
 
Jan. 19, 2020, 7 p.m. 4.0 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.21 ppb (2) N/A 4.7 μg/m3 (20) 32.0
 
Jan. 19, 2020, 6 p.m. 11.6 ppb (11) 3.3 ppb (3) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) 0.31 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2020, 5 p.m. 40.0 ppb (37) 18.0 ppb (17) N/A 22.0 ppb (20) N/A N/A 17.0 ppb (13) 0.65 ppb (7) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 19, 2020, 4 p.m. 43.0 ppb (40) 19.1 ppb (18) N/A 24.0 ppb (22) N/A N/A 11.0 ppb (8) 0.58 ppb (6) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 19, 2020, 3 p.m. 34.4 ppb (32) 10.5 ppb (10) N/A 24.0 ppb (22) N/A N/A 9.0 ppb (7) 0.52 ppb (6) N/A 3.4 μg/m3 (14) 32.0
 
Jan. 19, 2020, 2 p.m. 21.3 ppb (20) 0.9 ppb (1) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (11) 0.35 ppb (4) N/A 0.7 μg/m3 (3) 20.0
 
Jan. 19, 2020, 1 p.m. 16.5 ppb (15) 0.5 ppb (0) N/A 16.0 ppb (15) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A -0.2 μg/m3 (0) 15.0
 
Jan. 19, 2020, noon 20.8 ppb (19) 1.0 ppb (1) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) 0.33 ppb (4) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 19, 2020, 11 a.m. 18.4 ppb (17) 0.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) 0.36 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 19, 2020, 10 a.m. 11.7 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) 0.28 ppb (3) N/A 3.5 μg/m3 (15) 20.0
 
Jan. 19, 2020, 9 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.21 ppb (2) N/A 3.7 μg/m3 (15) 30.0
 
Jan. 19, 2020, 8 a.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 32.0
 
Jan. 19, 2020, 7 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.17 ppb (2) N/A 0.5 μg/m3 (2) 32.0
 
Jan. 19, 2020, 6 a.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.18 ppb (2) N/A 2.5 μg/m3 (10) 32.0
 
Jan. 19, 2020, 5 a.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 19, 2020, 4 a.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.19 ppb (2) N/A 6.5 μg/m3 (27) 31.0
 
Jan. 19, 2020, 3 a.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.2 ppb (2) N/A 2.3 μg/m3 (10) 31.0
 
Jan. 19, 2020, 2 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 33.0
 
Jan. 19, 2020, 1 a.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.21 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 19, 2020, midnight 3.5 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.21 ppb (2) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 18, 2020, 11 p.m. 3.6 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 18, 2020, 10 p.m. 3.9 ppb (4) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 18, 2020, 9 p.m. 3.5 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.21 ppb (2) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 18, 2020, 8 p.m. 3.7 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.21 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
Jan. 18, 2020, 7 p.m. 3.7 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 34.0
 
Jan. 18, 2020, 6 p.m. 4.1 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 32.0
 
Jan. 18, 2020, 5 p.m. 7.1 ppb (7) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.24 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 18, 2020, 4 p.m. 60.7 ppb (57) 33.3 ppb (31) N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) 0.8 ppb (9) N/A 7.0 μg/m3 (29) 57.0
 
Jan. 18, 2020, 3 p.m. 68.7 ppb (66) 40.3 ppb (37) N/A 28.0 ppb (26) N/A N/A 3.0 ppb (2) 0.88 ppb (10) N/A 3.6 μg/m3 (15) 66.0
 
Jan. 18, 2020, 2 p.m. 42.8 ppb (40) 14.9 ppb (14) N/A 28.0 ppb (26) N/A N/A 3.0 ppb (2) 0.72 ppb (8) N/A 5.6 μg/m3 (23) 40.0
 
Jan. 18, 2020, 1 p.m. 36.5 ppb (34) 11.0 ppb (10) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 0.56 ppb (6) N/A 7.6 μg/m3 (32) 34.0
 
Jan. 18, 2020, noon 38.7 ppb (36) 14.1 ppb (13) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 0.56 ppb (6) N/A 8.3 μg/m3 (35) 36.0
 
Jan. 18, 2020, 11 a.m. 36.8 ppb (34) 13.6 ppb (13) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.61 ppb (7) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 18, 2020, 10 a.m. 43.1 ppb (40) 20.7 ppb (19) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) 0.74 ppb (8) N/A 13.7 μg/m3 (54) 54.0
 
Jan. 18, 2020, 9 a.m. 44.8 ppb (41) 20.7 ppb (19) N/A 24.0 ppb (22) N/A N/A 2.0 ppb (2) 0.72 ppb (8) N/A 18.2 μg/m3 (63) 63.0
 
Jan. 18, 2020, 8 a.m. 36.8 ppb (34) 11.6 ppb (11) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) 0.72 ppb (8) N/A 13.7 μg/m3 (54) 54.0
 
Jan. 18, 2020, 7 a.m. 35.1 ppb (32) 7.9 ppb (7) N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) 0.72 ppb (8) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 18, 2020, 6 a.m. 37.8 ppb (35) 9.8 ppb (9) N/A 28.0 ppb (26) N/A N/A 4.0 ppb (3) 0.67 ppb (7) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 18, 2020, 5 a.m. 23.9 ppb (22) 1.7 ppb (2) N/A 22.0 ppb (20) N/A N/A 11.0 ppb (8) 0.53 ppb (6) N/A 4.5 μg/m3 (19) 22.0
 
Jan. 18, 2020, 4 a.m. 24.4 ppb (23) 2.2 ppb (2) N/A 22.0 ppb (20) N/A N/A 13.0 ppb (10) 0.5 ppb (6) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 18, 2020, 3 a.m. 21.9 ppb (20) 1.6 ppb (1) N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) 0.47 ppb (5) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 18, 2020, 2 a.m. 33.2 ppb (31) 4.0 ppb (4) N/A 29.0 ppb (27) N/A N/A 9.0 ppb (7) 0.62 ppb (7) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 18, 2020, 1 a.m. 19.8 ppb (18) 0.8 ppb (1) N/A 19.0 ppb (18) N/A N/A 23.0 ppb (18) 0.42 ppb (5) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 18, 2020, midnight 13.0 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 11 p.m. 10.1 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.27 ppb (3) N/A 4.6 μg/m3 (19) 28.0
 
Jan. 17, 2020, 10 p.m. 7.1 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.24 ppb (3) N/A 6.5 μg/m3 (27) 29.0
 
Jan. 17, 2020, 9 p.m. 8.0 ppb (7) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 30.0
 
Jan. 17, 2020, 8 p.m. 9.8 ppb (9) 3.2 ppb (3) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) 0.25 ppb (3) N/A 5.5 μg/m3 (23) 28.0
 
Jan. 17, 2020, 7 p.m. 13.2 ppb (12) 4.2 ppb (4) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 17, 2020, 6 p.m. 15.8 ppb (15) 5.6 ppb (5) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 17, 2020, 5 p.m. 16.8 ppb (16) 5.6 ppb (5) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) 0.34 ppb (4) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 17, 2020, 4 p.m. 29.0 ppb (27) 11.1 ppb (10) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) 0.54 ppb (6) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, 3 p.m. 50.0 ppb (46) 24.8 ppb (23) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 0.84 ppb (9) N/A 5.7 μg/m3 (24) 46.0
 
Jan. 17, 2020, 2 p.m. 49.3 ppb (46) 22.6 ppb (21) N/A 27.0 ppb (25) N/A N/A 4.0 ppb (3) 0.82 ppb (9) N/A 1.7 μg/m3 (7) 46.0
 
Jan. 17, 2020, 1 p.m. 11.6 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.26 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2020, noon 11.9 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) 0.27 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, 11 a.m. 8.0 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.24 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
Jan. 17, 2020, 10 a.m. 6.9 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.22 ppb (2) N/A 4.2 μg/m3 (18) 19.0
 
Jan. 17, 2020, 9 a.m. 6.7 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 8 a.m. 6.3 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.21 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 17, 2020, 7 a.m. 4.7 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.2 ppb (2) N/A 3.2 μg/m3 (13) 24.0
 
Jan. 17, 2020, 6 a.m. 4.8 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 25.0
 
Jan. 17, 2020, 5 a.m. 4.8 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.19 ppb (2) N/A 3.5 μg/m3 (15) 26.0
 
Jan. 17, 2020, 4 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.16 ppb (2) N/A 2.3 μg/m3 (10) 31.0
 
Jan. 17, 2020, 3 a.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 31.0
 
Jan. 17, 2020, 2 a.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.18 ppb (2) N/A 6.8 μg/m3 (28) 32.0
 
Jan. 17, 2020, 1 a.m. 4.0 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, midnight 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 16, 2020, 11 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.19 ppb (2) N/A 6.8 μg/m3 (28) 33.0
 
Jan. 16, 2020, 10 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.2 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 16, 2020, 9 p.m. 7.8 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.25 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 16, 2020, 8 p.m. 9.1 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.26 ppb (3) N/A 12.6 μg/m3 (51) 51.0
 
Jan. 16, 2020, 7 p.m. 19.5 ppb (18) 4.3 ppb (4) N/A 15.0 ppb (14) N/A N/A 32.0 ppb (25) 0.45 ppb (5) N/A 34.8 μg/m3 (99) 99.0
 
Jan. 16, 2020, 6 p.m. 41.4 ppb (38) 15.8 ppb (15) N/A 26.0 ppb (24) N/A N/A 17.0 ppb (13) 0.71 ppb (8) N/A 47.8 μg/m3 (131) 131.0
 
Jan. 16, 2020, 5 p.m. 56.4 ppb (53) 25.2 ppb (23) N/A 31.0 ppb (29) N/A N/A 7.0 ppb (5) 0.91 ppb (10) N/A 49.2 μg/m3 (134) 134.0
 
Jan. 16, 2020, 4 p.m. 66.4 ppb (63) 35.2 ppb (33) N/A 31.0 ppb (29) N/A N/A 4.0 ppb (3) 0.99 ppb (11) N/A 45.8 μg/m3 (126) 126.0
 
Jan. 16, 2020, 3 p.m. 69.4 ppb (66) 42.6 ppb (39) N/A 27.0 ppb (25) N/A N/A 2.0 ppb (2) 1.12 ppb (12) N/A 37.4 μg/m3 (105) 105.0
 
Jan. 16, 2020, 2 p.m. 53.1 ppb (49) 27.7 ppb (26) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 0.9 ppb (10) N/A 39.0 μg/m3 (109) 109.0
 
Jan. 16, 2020, 1 p.m. 51.4 ppb (48) 28.1 ppb (26) N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.82 ppb (9) N/A 28.4 μg/m3 (85) 85.0
 
Jan. 16, 2020, noon 44.6 ppb (41) 23.3 ppb (22) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.72 ppb (8) N/A 26.4 μg/m3 (81) 81.0
 
Jan. 16, 2020, 11 a.m. 67.3 ppb (64) 48.8 ppb (45) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 1.09 ppb (12) N/A 26.6 μg/m3 (81) 81.0
 
Jan. 16, 2020, 10 a.m. 95.2 ppb (94) 74.5 ppb (72) N/A 21.0 ppb (19) N/A N/A 3.0 ppb (2) 1.4 ppb (16) N/A 30.4 μg/m3 (89) 94.0
 
Jan. 16, 2020, 9 a.m. 84.8 ppb (83) 62.4 ppb (59) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) 1.35 ppb (15) N/A 31.1 μg/m3 (91) 91.0
 
Jan. 16, 2020, 8 a.m. 78.4 ppb (76) 53.9 ppb (50) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) 1.29 ppb (14) N/A 33.3 μg/m3 (95) 95.0
 
Jan. 16, 2020, 7 a.m. 86.8 ppb (85) 57.2 ppb (53) N/A 30.0 ppb (28) N/A N/A 2.0 ppb (2) 1.79 ppb (20) N/A 39.4 μg/m3 (110) 110.0
 
Jan. 16, 2020, 6 a.m. 103.1 ppb (100) 71.0 ppb (68) N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) 1.61 ppb (18) N/A 33.8 μg/m3 (96) 100.0
 
Jan. 16, 2020, 5 a.m. 84.4 ppb (82) 49.0 ppb (45) N/A 35.0 ppb (32) N/A N/A 3.0 ppb (2) 1.38 ppb (15) N/A 33.1 μg/m3 (95) 95.0
 
Jan. 16, 2020, 4 a.m. 60.2 ppb (57) 22.5 ppb (21) N/A 38.0 ppb (35) N/A N/A 3.0 ppb (2) 1.11 ppb (12) N/A 27.2 μg/m3 (82) 82.0
 
Jan. 16, 2020, 3 a.m. 69.7 ppb (67) 30.4 ppb (28) N/A 39.0 ppb (36) N/A N/A 3.0 ppb (2) 1.1 ppb (12) N/A 32.9 μg/m3 (94) 94.0
 
Jan. 16, 2020, 2 a.m. 37.2 ppb (34) 2.7 ppb (3) N/A 35.0 ppb (32) N/A N/A 12.0 ppb (9) 0.76 ppb (8) N/A 21.4 μg/m3 (70) 70.0
 
Jan. 16, 2020, 1 a.m. 29.1 ppb (27) 1.3 ppb (1) N/A 28.0 ppb (26) N/A N/A 24.0 ppb (18) 0.65 ppb (7) N/A 27.3 μg/m3 (83) 83.0
 
Jan. 16, 2020, midnight 16.2 ppb (15) 1.1 ppb (1) N/A 15.0 ppb (14) N/A N/A 40.0 ppb (31) 0.45 ppb (5) N/A 19.3 μg/m3 (66) 66.0
 
Jan. 15, 2020, 11 p.m. 14.5 ppb (13) 1.7 ppb (2) N/A 13.0 ppb (12) N/A N/A 44.0 ppb (34) 0.42 ppb (5) N/A 20.2 μg/m3 (67) 67.0
 
Jan. 15, 2020, 10 p.m. 10.8 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 48.0 ppb (37) 0.37 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, 9 p.m. 8.6 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 52.0 ppb (40) 0.35 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 15, 2020, 8 p.m. 11.7 ppb (11) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 47.0 ppb (36) 0.41 ppb (5) N/A N/A 36.0
 
Jan. 15, 2020, 7 p.m. 18.0 ppb (17) 5.2 ppb (5) N/A 13.0 ppb (12) N/A N/A 35.0 ppb (27) 0.47 ppb (5) N/A N/A 27.0
 
Jan. 15, 2020, 6 p.m. 28.0 ppb (26) 11.3 ppb (10) N/A 17.0 ppb (16) N/A N/A 23.0 ppb (18) 0.54 ppb (6) N/A 21.8 μg/m3 (71) 71.0
 
Jan. 15, 2020, 5 p.m. 54.1 ppb (50) 30.2 ppb (28) N/A 24.0 ppb (22) N/A N/A 12.0 ppb (9) 0.8 ppb (9) N/A 23.8 μg/m3 (75) 75.0
 
Jan. 15, 2020, 4 p.m. 103.0 ppb (100) 77.9 ppb (75) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 1.46 ppb (16) N/A 16.4 μg/m3 (59) 100.0
 
Jan. 15, 2020, 3 p.m. 97.8 ppb (97) 81.1 ppb (79) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 1.32 ppb (15) N/A 14.9 μg/m3 (56) 97.0
 
Jan. 15, 2020, 2 p.m. 90.1 ppb (88) 74.9 ppb (72) N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) 1.13 ppb (13) N/A 16.9 μg/m3 (60) 88.0