AQSQID: 060010011

Site Name: Oakland West

Location: Oakland, CA

Reporting: True, Located: True

Current AQI: 26.0

Oakland CA, US: 37.8148, -122.282402

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 24, 2019, 2 p.m. 29.5 ppb (27) 5.6 ppb (5) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 6.0 ppb (5) 0.6 ppb (7) N/A 6.0 μg/m3 (25) 27.0
 
March 24, 2019, 1 p.m. 27.7 ppb (26) 3.0 ppb (3) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 5.0 ppb (4) 0.63 ppb (7) N/A 4.0 μg/m3 (17) 26.0
 
March 24, 2019, noon 19.2 ppb (18) 1.0 ppb (1) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (10) 0.46 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2019, 10 a.m. 10.3 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (23) 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2019, 9 a.m. 19.7 ppb (18) 1.1 ppb (1) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 18.0 ppb (14) 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2019, 8 a.m. 21.3 ppb (20) 1.1 ppb (1) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 7 a.m. 25.8 ppb (24) 1.5 ppb (1) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 14.0 ppb (11) 0.53 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2019, 6 a.m. 16.4 ppb (15) 1.3 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 25.0 ppb (19) 0.5 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 5 a.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 33.0
 
March 24, 2019, 4 a.m. 5.6 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 33.0
 
March 24, 2019, 3 a.m. 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) 0.27 ppb (3) N/A 7.0 μg/m3 (29) 34.0
 
March 24, 2019, 2 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.28 ppb (3) N/A 3.0 μg/m3 (12) 36.0
 
March 24, 2019, 1 a.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 35.0
 
March 24, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.28 ppb (3) N/A 2.0 μg/m3 (8) 35.0
 
March 23, 2019, 11 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.27 ppb (3) N/A -1.0 μg/m3 (0) 36.0
 
March 23, 2019, 10 p.m. 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.28 ppb (3) N/A 3.0 μg/m3 (12) 35.0
 
March 23, 2019, 9 p.m. 3.6 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 8 p.m. 4.4 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 33.0
 
March 23, 2019, 7 p.m. 3.5 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 33.0
 
March 23, 2019, 6 p.m. 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.28 ppb (3) N/A 5.0 μg/m3 (21) 32.0
 
March 23, 2019, 5 p.m. 4.6 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.29 ppb (3) N/A 3.0 μg/m3 (12) 32.0
 
March 23, 2019, 4 p.m. 6.5 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.3 ppb (3) N/A 5.0 μg/m3 (21) 31.0
 
March 23, 2019, 3 p.m. 10.2 ppb (9) 1.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (28) 0.33 ppb (4) N/A 4.0 μg/m3 (17) 28.0
 
March 23, 2019, 2 p.m. 10.7 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 34.0 ppb (26) 0.36 ppb (4) N/A 4.0 μg/m3 (17) 26.0
 
March 23, 2019, 1 p.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 35.0 ppb (27) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
March 23, 2019, noon 23.5 ppb (22) 0.8 ppb (1) N/A 23.0 ppb (21) N/A N/A 18.0 ppb (14) 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 10 a.m. 11.4 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (20) 0.39 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 9 a.m. 6.4 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.36 ppb (4) N/A 4.0 μg/m3 (17) 23.0
 
March 23, 2019, 8 a.m. 5.1 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.34 ppb (4) N/A 1.0 μg/m3 (4) 24.0
 
March 23, 2019, 7 a.m. 5.6 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 23.0
 
March 23, 2019, 6 a.m. 6.8 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.36 ppb (4) N/A 1.0 μg/m3 (4) 22.0
 
March 23, 2019, 5 a.m. 12.7 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) 0.44 ppb (5) N/A 2.0 μg/m3 (8) 18.0
 
March 23, 2019, 4 a.m. 12.3 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2019, 3 a.m. 13.8 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (18) 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2019, 2 a.m. 11.5 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) 0.42 ppb (5) N/A 3.0 μg/m3 (12) 22.0
 
March 23, 2019, 1 a.m. 12.8 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 28.0 ppb (22) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 22.0
 
March 23, 2019, midnight 11.0 ppb (10) 1.3 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (23) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 23.0
 
March 22, 2019, 11 p.m. 9.7 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 32.0 ppb (25) 0.39 ppb (4) N/A 4.0 μg/m3 (17) 25.0
 
March 22, 2019, 10 p.m. 9.2 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (26) 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 9 p.m. 8.5 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.36 ppb (4) N/A 5.0 μg/m3 (21) 28.0
 
March 22, 2019, 8 p.m. 10.0 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 35.0 ppb (27) 0.37 ppb (4) N/A 1.0 μg/m3 (4) 27.0
 
March 22, 2019, 7 p.m. 13.3 ppb (12) 2.7 ppb (3) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (25) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 25.0
 
March 22, 2019, 6 p.m. 9.9 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 36.0 ppb (28) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 28.0
 
March 22, 2019, 5 p.m. 16.4 ppb (15) 3.4 ppb (3) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 29.0 ppb (22) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 4 p.m. 28.7 ppb (27) 6.1 ppb (6) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 15.0 ppb (12) 0.49 ppb (5) N/A 6.0 μg/m3 (25) 27.0
 
March 22, 2019, 3 p.m. 29.1 ppb (27) 5.0 ppb (5) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 10.0 ppb (8) 0.53 ppb (6) N/A 5.0 μg/m3 (21) 27.0
 
March 22, 2019, 2 p.m. 24.0 ppb (22) 2.9 ppb (3) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 11.0 ppb (8) 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 1 p.m. 15.2 ppb (14) 1.2 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 15.0 ppb (12) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, noon 17.5 ppb (16) 1.1 ppb (1) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 10 a.m. 13.2 ppb (12) 0.7 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 26.0 ppb (20) 0.33 ppb (4) N/A 3.0 μg/m3 (12) 20.0
 
March 22, 2019, 9 a.m. 7.0 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.28 ppb (3) N/A 6.0 μg/m3 (25) 28.0
 
March 22, 2019, 8 a.m. 11.8 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 30.0 ppb (23) 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 7 a.m. 13.6 ppb (13) 0.9 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 6 a.m. 12.2 ppb (11) 0.6 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 30.0 ppb (23) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 5 a.m. 10.2 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 32.0 ppb (25) 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2019, 4 a.m. 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 3 a.m. 7.1 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 30.0
 
March 22, 2019, 2 a.m. 5.8 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.28 ppb (3) N/A 1.0 μg/m3 (4) 31.0
 
March 22, 2019, 1 a.m. 8.9 ppb (8) 1.3 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 37.0 ppb (28) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 28.0
 
March 22, 2019, midnight 5.1 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 30.0
 
March 21, 2019, 11 p.m. 7.2 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 30.0
 
March 21, 2019, 10 p.m. 7.8 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.3 ppb (3) N/A 4.0 μg/m3 (17) 30.0
 
March 21, 2019, 9 p.m. 8.1 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 30.0
 
March 21, 2019, 8 p.m. 9.3 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 7 p.m. 6.6 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 42.0 ppb (32) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 32.0
 
March 21, 2019, 6 p.m. 7.7 ppb (7) 2.3 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 39.0 ppb (30) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 30.0
 
March 21, 2019, 5 p.m. 12.8 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 33.0 ppb (25) 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 4 p.m. 19.6 ppb (18) 5.4 ppb (5) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 27.0 ppb (21) 0.47 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 3 p.m. 44.8 ppb (41) 17.4 ppb (16) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 12.0 ppb (9) 0.69 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
March 21, 2019, 2 p.m. 52.3 ppb (48) 21.3 ppb (20) N/A 31.0 ppb (29) N/A 1.0 ppb (1) 4.0 ppb (3) 0.9 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
March 21, 2019, 1 p.m. 36.0 ppb (33) 8.6 ppb (8) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 5.0 ppb (4) 0.71 ppb (8) N/A 7.0 μg/m3 (29) 33.0
 
March 21, 2019, noon 24.5 ppb (23) 2.3 ppb (2) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 10.0 ppb (8) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 11 a.m. 21.4 ppb (20) 2.0 ppb (2) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 21, 2019, 9 a.m. 28.8 ppb (27) 3.7 ppb (3) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 5.0 ppb (4) 0.6 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 8 a.m. 19.2 ppb (18) 0.8 ppb (1) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 13.0 ppb (10) 0.56 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 7 a.m. 19.2 ppb (18) 0.7 ppb (1) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 16.0 ppb (12) 0.62 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 6 a.m. 11.6 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (25) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 25.0
 
March 21, 2019, 5 a.m. 9.8 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (28) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 28.0
 
March 21, 2019, 4 a.m. 7.1 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 32.0
 
March 21, 2019, 3 a.m. 7.2 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 32.0
 
March 21, 2019, 2 a.m. 6.7 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.31 ppb (3) N/A 6.0 μg/m3 (25) 32.0
 
March 21, 2019, 1 a.m. 5.8 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 33.0
 
March 21, 2019, midnight 6.5 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.3 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 11 p.m. 7.3 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) 0.3 ppb (3) N/A 8.0 μg/m3 (33) 34.0
 
March 20, 2019, 10 p.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.29 ppb (3) N/A N/A 35.0
 
March 20, 2019, 9 p.m. 5.7 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 36.0
 
March 20, 2019, 8 p.m. 6.7 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) 0.27 ppb (3) N/A 7.0 μg/m3 (29) 34.0
 
March 20, 2019, 7 p.m. 6.5 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 43.0 ppb (33) 0.28 ppb (3) N/A 7.0 μg/m3 (29) 33.0
 
March 20, 2019, 6 p.m. 9.2 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 42.0 ppb (32) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 32.0
 
March 20, 2019, 5 p.m. 12.1 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A 2.0 ppb (3) 41.0 ppb (32) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 32.0
 
March 20, 2019, 4 p.m. 16.7 ppb (15) 1.9 ppb (2) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 36.0 ppb (28) 0.37 ppb (4) N/A 4.0 μg/m3 (17) 28.0
 
March 20, 2019, 3 p.m. 9.6 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 38.0 ppb (29) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 29.0
 
March 20, 2019, 2 p.m. 14.9 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 31.0 ppb (24) 0.36 ppb (4) N/A 5.0 μg/m3 (21) 24.0
 
March 20, 2019, 1 p.m. 10.7 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (27) 0.32 ppb (4) N/A 1.0 μg/m3 (4) 27.0
 
March 20, 2019, noon 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.27 ppb (3) N/A 1.0 μg/m3 (4) 32.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 20, 2019, 10 a.m. 3.7 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 34.0
 
March 20, 2019, 9 a.m. 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 29.0
 
March 20, 2019, 8 a.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.26 ppb (3) N/A 7.0 μg/m3 (29) 35.0
 
March 20, 2019, 7 a.m. 7.5 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.29 ppb (3) N/A 5.0 μg/m3 (21) 32.0
 
March 20, 2019, 6 a.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 44.0 ppb (34) 0.27 ppb (3) N/A 7.0 μg/m3 (29) 34.0
 
March 20, 2019, 5 a.m. 6.7 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 47.0 ppb (36) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 36.0
 
March 20, 2019, 4 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 3.0 ppb (4) 41.0 ppb (32) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 32.0
 
March 20, 2019, 3 a.m. 7.1 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 45.0 ppb (35) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 35.0
 
March 20, 2019, 2 a.m. 12.3 ppb (11) 0.7 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 42.0 ppb (32) 0.32 ppb (4) N/A 7.0 μg/m3 (29) 32.0
 
March 20, 2019, 1 a.m. 12.5 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 40.0 ppb (31) 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 20, 2019, midnight 21.5 ppb (20) 3.8 ppb (4) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 33.0 ppb (25) 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 11 p.m. 16.5 ppb (15) 2.7 ppb (3) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 38.0 ppb (29) 0.39 ppb (4) N/A 6.0 μg/m3 (25) 29.0
 
March 19, 2019, 10 p.m. 17.5 ppb (16) 3.8 ppb (4) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 36.0 ppb (28) 0.33 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
March 19, 2019, 9 p.m. 23.8 ppb (22) 6.2 ppb (6) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 33.0 ppb (25) 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 8 p.m. 45.4 ppb (42) 16.3 ppb (15) N/A 29.0 ppb (27) N/A 1.0 ppb (1) 17.0 ppb (13) 0.56 ppb (6) N/A 23.0 μg/m3 (73) 73.0
 
March 19, 2019, 7 p.m. 46.1 ppb (43) 18.7 ppb (17) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 15.0 ppb (12) 0.59 ppb (7) N/A 21.0 μg/m3 (69) 69.0
 
March 19, 2019, 6 p.m. 45.7 ppb (42) 19.1 ppb (18) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 13.0 ppb (10) 0.57 ppb (6) N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 5 p.m. 32.8 ppb (30) 9.9 ppb (9) N/A 23.0 ppb (21) N/A 2.0 ppb (3) 17.0 ppb (13) 0.54 ppb (6) N/A 23.0 μg/m3 (73) 73.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
March 19, 2019, 3 p.m. 33.9 ppb (31) 7.3 ppb (7) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 13.0 ppb (10) 0.64 ppb (7) N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 2 p.m. 35.8 ppb (33) 5.3 ppb (5) N/A 31.0 ppb (29) N/A 1.0 ppb (1) 5.0 ppb (4) 0.73 ppb (8) N/A 19.0 μg/m3 (65) 65.0
 
March 19, 2019, 1 p.m. 32.6 ppb (30) 4.7 ppb (4) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 4.0 ppb (3) 0.68 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, noon 32.4 ppb (30) 4.0 ppb (4) N/A 28.0 ppb (26) N/A N/A 6.0 ppb (5) 0.46 ppb (5) N/A 20.0 μg/m3 (67) 67.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 10 a.m. 10.0 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (22) 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 9 a.m. 7.1 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 19, 2019, 8 a.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 7 a.m. 5.3 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 32.0
 
March 19, 2019, 6 a.m. 6.9 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.58 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 5 a.m. 6.8 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.33 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 4 a.m. 7.3 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 3 a.m. 7.7 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 2 a.m. 11.5 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 37.0 ppb (28) 0.45 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 1 a.m. 13.4 ppb (12) 1.6 ppb (1) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 40.0 ppb (31) 0.4 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
March 19, 2019, midnight 8.7 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 45.0 ppb (35) 0.41 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 11 p.m. 11.7 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 43.0 ppb (33) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 10 p.m. 13.6 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 40.0 ppb (31) 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 9 p.m. 13.8 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 44.0 ppb (34) 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 8 p.m. 19.8 ppb (18) 4.4 ppb (4) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 39.0 ppb (30) 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 7 p.m. 27.3 ppb (25) 7.6 ppb (7) N/A 20.0 ppb (19) N/A 1.0 ppb (1) 30.0 ppb (23) 0.44 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 6 p.m. 38.3 ppb (35) 12.6 ppb (12) N/A 26.0 ppb (24) N/A 2.0 ppb (3) 22.0 ppb (17) 0.46 ppb (5) N/A 8.0 μg/m3 (33) 35.0
 
March 18, 2019, 5 p.m. 33.5 ppb (31) 11.4 ppb (11) N/A 22.0 ppb (20) N/A 2.0 ppb (3) 19.0 ppb (15) 0.48 ppb (5) N/A 16.0 μg/m3 (59) 59.0
 
March 18, 2019, 4 p.m. 38.2 ppb (35) 13.7 ppb (13) N/A 25.0 ppb (23) N/A 2.0 ppb (3) 15.0 ppb (12) 0.54 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 3 p.m. 63.9 ppb (61) 34.6 ppb (32) N/A 29.0 ppb (27) N/A 1.0 ppb (1) 5.0 ppb (4) 0.88 ppb (10) N/A 20.0 μg/m3 (67) 67.0
 
March 18, 2019, 2 p.m. 71.8 ppb (69) 40.0 ppb (37) N/A 32.0 ppb (30) N/A 1.0 ppb (1) 1.0 ppb (1) 1.14 ppb (13) N/A 14.0 μg/m3 (54) 69.0
 
March 18, 2019, 1 p.m. 59.3 ppb (56) 29.0 ppb (27) N/A 30.0 ppb (28) N/A 1.0 ppb (1) 1.0 ppb (1) 0.94 ppb (10) N/A 17.0 μg/m3 (61) 61.0
 
March 18, 2019, noon 52.7 ppb (49) 26.3 ppb (24) N/A 26.0 ppb (24) N/A N/A 1.0 ppb (1) 0.94 ppb (10) N/A 11.0 μg/m3 (46) 49.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 10 a.m. 40.8 ppb (38) 15.8 ppb (15) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 1.0 ppb (1) 0.97 ppb (11) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 9 a.m. 36.1 ppb (33) 11.4 ppb (11) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 1.0 ppb (1) 0.84 ppb (9) N/A 17.0 μg/m3 (61) 61.0
 
March 18, 2019, 8 a.m. 30.7 ppb (28) 4.4 ppb (4) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 2.0 ppb (2) 0.8 ppb (9) N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 7 a.m. 21.8 ppb (20) 1.4 ppb (1) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 10.0 ppb (8) 0.58 ppb (6) N/A 16.0 μg/m3 (59) 59.0
 
March 18, 2019, 6 a.m. 29.1 ppb (27) 1.9 ppb (2) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 8.0 ppb (6) 0.56 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 5 a.m. 26.3 ppb (24) 1.4 ppb (1) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 11.0 ppb (8) 0.62 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 4 a.m. 21.2 ppb (20) 0.8 ppb (1) N/A 20.0 ppb (19) N/A 1.0 ppb (1) 19.0 ppb (15) 0.59 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 3 a.m. 19.9 ppb (18) 0.8 ppb (1) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 23.0 ppb (18) 0.51 ppb (6) N/A 14.0 μg/m3 (54) 54.0
 
March 18, 2019, 2 a.m. 23.4 ppb (22) 0.8 ppb (1) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 27.0 ppb (21) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 1 a.m. 15.0 ppb (14) 1.2 ppb (1) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 37.0 ppb (28) 0.41 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, midnight 10.2 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 47.0 ppb (36) 0.42 ppb (5) N/A 7.0 μg/m3 (29) 36.0
 
March 17, 2019, 11 p.m. 10.1 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 50.0 ppb (38) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 38.0
 
March 17, 2019, 10 p.m. 7.6 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 9.0 ppb (13) 52.0 ppb (40) 0.39 ppb (4) N/A 6.0 μg/m3 (25) 40.0
 
March 17, 2019, 9 p.m. 8.1 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 19.0 ppb (27) 47.0 ppb (36) 0.37 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
March 17, 2019, 8 p.m. 13.7 ppb (13) 3.1 ppb (3) N/A 11.0 ppb (10) N/A 13.0 ppb (19) 35.0 ppb (27) 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
March 17, 2019, 7 p.m. 11.3 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A 2.0 ppb (3) 29.0 ppb (22) 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 6 p.m. 12.1 ppb (11) 3.9 ppb (4) N/A 8.0 ppb (7) N/A 2.0 ppb (3) 24.0 ppb (18) 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 5 p.m. 13.9 ppb (13) 4.7 ppb (4) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 20.0 ppb (15) 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 4 p.m. 21.3 ppb (20) 7.7 ppb (7) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 14.0 ppb (11) 0.49 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 3 p.m. 16.3 ppb (15) 4.6 ppb (4) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 13.0 ppb (10) 0.45 ppb (5) N/A 12.0 μg/m3 (50) 50.0