AQSQID: 060712002

Site Name: Fontana - Arrow Highway

Location: Fontana, CA

Reporting: True, Located: True

Current AQI: 43.0

Fontana CA, US: 34.0994, -117.5047

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 7 p.m. -1.3 ppb (0) 0.5 ppb (0) N/A N/A N/A 0.0 ppb (0) 56.0 ppb (43) 0.12 ppb (1) N/A N/A 43.0
 
Sept. 22, 2019, 6 p.m. 0.5 ppb (0) 1.1 ppb (1) N/A -1.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) 0.12 ppb (1) N/A N/A 41.0
 
Sept. 22, 2019, 5 p.m. 0.3 ppb (0) 0.8 ppb (1) N/A -1.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) 0.13 ppb (1) N/A N/A 38.0
 
Sept. 22, 2019, 4 p.m. 13.4 ppb (12) 3.5 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (27) 0.27 ppb (3) N/A N/A 27.0
 
Sept. 22, 2019, 3 p.m. 17.9 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 27.0 ppb (21) 0.33 ppb (4) N/A N/A 21.0
 
Sept. 22, 2019, 2 p.m. 27.0 ppb (25) 8.7 ppb (8) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 10.0 ppb (8) 0.5 ppb (6) N/A N/A 25.0
 
Sept. 22, 2019, 1 p.m. 25.6 ppb (24) 0.9 ppb (1) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 8.0 ppb (6) 0.37 ppb (4) N/A N/A 24.0
 
Sept. 22, 2019, noon 23.2 ppb (21) 0.4 ppb (0) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 15.0 ppb (12) 0.27 ppb (3) N/A N/A 21.0
 
Sept. 22, 2019, 11 a.m. 20.2 ppb (19) 0.9 ppb (1) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 13.0 ppb (10) 0.29 ppb (3) N/A N/A 19.0
 
Sept. 22, 2019, 10 a.m. 23.6 ppb (22) 3.5 ppb (3) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 13.0 ppb (10) 0.37 ppb (4) N/A N/A 22.0
 
Sept. 22, 2019, 9 a.m. 21.5 ppb (20) 0.4 ppb (0) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 13.0 ppb (10) 0.55 ppb (6) N/A N/A 20.0
 
Sept. 22, 2019, 8 a.m. 20.7 ppb (19) 0.6 ppb (1) N/A 20.0 ppb (19) N/A 1.0 ppb (1) 17.0 ppb (13) 0.61 ppb (7) N/A N/A 19.0
 
Sept. 22, 2019, 7 a.m. 27.4 ppb (25) 0.2 ppb (0) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 14.0 ppb (11) 0.6 ppb (7) N/A N/A 25.0
 
Sept. 22, 2019, 6 a.m. 27.7 ppb (26) 1.0 ppb (1) N/A 27.0 ppb (25) N/A 1.0 ppb (1) 15.0 ppb (12) 0.63 ppb (7) N/A N/A 26.0
 
Sept. 22, 2019, 5 a.m. 23.9 ppb (22) 0.1 ppb (0) N/A 24.0 ppb (22) N/A 1.0 ppb (1) 24.0 ppb (18) 0.46 ppb (5) N/A N/A 22.0
 
Sept. 22, 2019, 4 a.m. 22.5 ppb (21) 0.3 ppb (0) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 32.0 ppb (25) 0.39 ppb (4) N/A N/A 25.0
 
Sept. 22, 2019, 3 a.m. 17.6 ppb (16) 2.4 ppb (2) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 47.0 ppb (36) 0.31 ppb (3) N/A N/A 36.0
 
Sept. 22, 2019, 2 a.m. 6.9 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 65.0 ppb (50) 0.26 ppb (3) N/A N/A 50.0
 
Sept. 22, 2019, 1 a.m. 7.0 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 94.0 ppb (74) 0.3 ppb (3) N/A N/A 74.0
 
Sept. 22, 2019, midnight 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 100.0 ppb (79) 0.28 ppb (3) N/A N/A 79.0
 
Sept. 21, 2019, 11 p.m. -0.2 ppb (0) 0.3 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (1) 79.0 ppb (62) 0.17 ppb (2) N/A N/A 62.0
 
Sept. 21, 2019, 10 p.m. -0.1 ppb (0) 0.4 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (1) 75.0 ppb (58) 0.15 ppb (2) N/A N/A 58.0
 
Sept. 21, 2019, 9 p.m. 1.1 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 73.0 ppb (57) 0.16 ppb (2) N/A N/A 57.0
 
Sept. 21, 2019, 8 p.m. 2.1 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 66.0 ppb (51) 0.2 ppb (2) N/A N/A 51.0
 
Sept. 21, 2019, 7 p.m. 8.2 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 60.0 ppb (46) 0.25 ppb (3) N/A N/A 46.0
 
Sept. 21, 2019, 6 p.m. 19.2 ppb (18) 4.5 ppb (4) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 50.0 ppb (38) 0.4 ppb (4) N/A N/A 38.0
 
Sept. 21, 2019, 5 p.m. 22.9 ppb (21) 6.5 ppb (6) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 40.0 ppb (31) 0.41 ppb (5) N/A N/A 31.0
 
Sept. 21, 2019, 4 p.m. 21.6 ppb (20) 7.2 ppb (7) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 34.0 ppb (26) 0.47 ppb (5) N/A N/A 26.0
 
Sept. 21, 2019, 3 p.m. 42.5 ppb (39) 17.4 ppb (16) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 16.0 ppb (12) 0.44 ppb (5) N/A N/A 39.0
 
Sept. 21, 2019, 2 p.m. 48.4 ppb (45) 23.5 ppb (22) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 6.0 ppb (5) 0.64 ppb (7) N/A N/A 45.0
 
Sept. 21, 2019, 1 p.m. 31.2 ppb (29) 7.0 ppb (6) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 3.0 ppb (2) 0.51 ppb (6) N/A N/A 29.0
 
Sept. 21, 2019, noon 33.0 ppb (31) 7.9 ppb (7) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 3.0 ppb (2) 0.49 ppb (5) N/A N/A 31.0
 
Sept. 21, 2019, 11 a.m. 27.4 ppb (25) 5.1 ppb (5) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (2) 0.49 ppb (5) N/A N/A 25.0
 
Sept. 21, 2019, 10 a.m. 33.5 ppb (31) 9.0 ppb (8) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 3.0 ppb (2) 0.56 ppb (6) N/A N/A 31.0
 
Sept. 21, 2019, 9 a.m. 37.3 ppb (35) 11.2 ppb (10) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 3.0 ppb (2) 0.62 ppb (7) N/A N/A 35.0
 
Sept. 21, 2019, 8 a.m. 41.0 ppb (38) 12.6 ppb (12) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 3.0 ppb (2) 0.64 ppb (7) N/A N/A 38.0
 
Sept. 21, 2019, 7 a.m. 24.9 ppb (23) 0.9 ppb (1) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 6.0 ppb (5) 0.42 ppb (5) N/A N/A 23.0
 
Sept. 21, 2019, 6 a.m. 24.2 ppb (22) 0.5 ppb (0) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 10.0 ppb (8) 0.36 ppb (4) N/A N/A 22.0
 
Sept. 21, 2019, 5 a.m. 17.7 ppb (16) 0.1 ppb (0) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 20.0 ppb (15) 0.29 ppb (3) N/A N/A 17.0
 
Sept. 21, 2019, 4 a.m. 12.3 ppb (11) 0.3 ppb (0) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 29.0 ppb (22) 0.29 ppb (3) N/A N/A 22.0
 
Sept. 21, 2019, 3 a.m. 11.1 ppb (10) 0.1 ppb (0) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 35.0 ppb (27) 0.25 ppb (3) N/A N/A 27.0
 
Sept. 21, 2019, 2 a.m. 8.4 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 43.0 ppb (33) 0.22 ppb (2) N/A N/A 33.0
 
Sept. 21, 2019, 1 a.m. 9.3 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 48.0 ppb (37) 0.25 ppb (3) N/A N/A 37.0
 
Sept. 21, 2019, midnight 7.0 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 60.0 ppb (46) 0.24 ppb (3) N/A N/A 46.0
 
Sept. 20, 2019, 11 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 67.0 ppb (52) 0.18 ppb (2) N/A N/A 52.0
 
Sept. 20, 2019, 10 p.m. 3.2 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 66.0 ppb (51) 0.18 ppb (2) N/A N/A 51.0
 
Sept. 20, 2019, 9 p.m. 3.6 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 60.0 ppb (46) 0.18 ppb (2) N/A N/A 46.0
 
Sept. 20, 2019, 8 p.m. 6.4 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) 0.19 ppb (2) N/A N/A 41.0
 
Sept. 20, 2019, 7 p.m. 9.6 ppb (9) 3.3 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) N/A N/A 34.0
 
Sept. 20, 2019, 6 p.m. 12.0 ppb (11) 5.2 ppb (5) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) N/A N/A 27.0
 
Sept. 20, 2019, 5 p.m. 11.6 ppb (11) 5.4 ppb (5) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) N/A N/A 23.0
 
Sept. 20, 2019, 4 p.m. 10.2 ppb (9) 5.0 ppb (5) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
Sept. 19, 2019, 4 p.m. 15.2 ppb (14) 6.7 ppb (6) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 23.0 ppb (18) 0.25 ppb (3) N/A N/A 18.0
 
Sept. 19, 2019, 3 p.m. 16.8 ppb (16) 5.7 ppb (5) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 16.0 ppb (12) 0.26 ppb (3) N/A N/A 16.0
 
Sept. 19, 2019, 2 p.m. 12.2 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (10) 0.24 ppb (3) N/A N/A 11.0
 
Sept. 19, 2019, 1 p.m. 22.9 ppb (21) 6.0 ppb (6) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (4) 0.35 ppb (4) N/A N/A 21.0
 
Sept. 19, 2019, noon 23.9 ppb (22) 6.1 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 4.0 ppb (3) 0.35 ppb (4) N/A N/A 22.0
 
Sept. 19, 2019, 11 a.m. 29.3 ppb (27) 12.0 ppb (11) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 3.0 ppb (2) 0.36 ppb (4) N/A N/A 27.0
 
Sept. 19, 2019, 10 a.m. 26.7 ppb (25) 9.4 ppb (9) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 3.0 ppb (2) 0.36 ppb (4) N/A N/A 25.0
 
Sept. 19, 2019, 9 a.m. 24.6 ppb (23) 5.8 ppb (5) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 3.0 ppb (2) 0.31 ppb (3) N/A N/A 23.0
 
Sept. 19, 2019, 8 a.m. 19.9 ppb (18) 2.8 ppb (3) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 4.0 ppb (3) 0.3 ppb (3) N/A N/A 18.0
 
Sept. 19, 2019, 7 a.m. 17.0 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (5) 0.25 ppb (3) N/A N/A 16.0
 
Sept. 19, 2019, 6 a.m. 13.6 ppb (13) 0.3 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (9) 0.24 ppb (3) N/A N/A 13.0
 
Sept. 19, 2019, 5 a.m. 9.9 ppb (9) 0.1 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 17.0 ppb (13) 0.23 ppb (3) N/A N/A 13.0
 
Sept. 19, 2019, 4 a.m. 9.9 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 19.0 ppb (15) 0.19 ppb (2) N/A N/A 15.0
 
Sept. 19, 2019, 3 a.m. 8.1 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A N/A 17.0
 
Sept. 19, 2019, 2 a.m. 6.1 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A N/A 23.0
 
Sept. 19, 2019, 1 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A N/A 35.0
 
Sept. 19, 2019, midnight 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 62.0 ppb (48) 0.16 ppb (2) N/A N/A 48.0
 
Sept. 18, 2019, 11 p.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 68.0 ppb (52) 0.16 ppb (2) N/A N/A 52.0
 
Sept. 18, 2019, 10 p.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 72.0 ppb (56) 0.16 ppb (2) N/A N/A 56.0
 
Sept. 18, 2019, 9 p.m. 3.3 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 71.0 ppb (55) 0.17 ppb (2) N/A N/A 55.0
 
Sept. 18, 2019, 8 p.m. 4.6 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 62.0 ppb (48) 0.15 ppb (2) N/A N/A 48.0
 
Sept. 18, 2019, 7 p.m. 10.0 ppb (9) 2.9 ppb (3) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 50.0 ppb (38) 0.19 ppb (2) N/A N/A 38.0
 
Sept. 18, 2019, 6 p.m. 21.0 ppb (19) 6.6 ppb (6) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 39.0 ppb (30) 0.25 ppb (3) N/A N/A 30.0
 
Sept. 18, 2019, 5 p.m. 21.9 ppb (20) 7.7 ppb (7) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 33.0 ppb (25) 0.27 ppb (3) N/A N/A 25.0
 
Sept. 18, 2019, 4 p.m. 40.2 ppb (37) 16.4 ppb (15) N/A 24.0 ppb (22) N/A 1.0 ppb (1) 20.0 ppb (15) 0.38 ppb (4) N/A N/A 37.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 18, 2019, 2 p.m. 60.0 ppb (56) 36.1 ppb (33) N/A 24.0 ppb (22) N/A 1.0 ppb (1) 4.0 ppb (3) 0.67 ppb (7) N/A N/A 56.0
 
Sept. 18, 2019, 1 p.m. 44.5 ppb (41) 22.4 ppb (21) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 3.0 ppb (2) 0.61 ppb (7) N/A N/A 41.0
 
Sept. 18, 2019, noon 35.3 ppb (33) 12.0 ppb (11) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 3.0 ppb (2) 0.43 ppb (5) N/A N/A 33.0
 
Sept. 18, 2019, 11 a.m. 28.8 ppb (27) 7.6 ppb (7) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 3.0 ppb (2) 0.34 ppb (4) N/A N/A 27.0
 
Sept. 18, 2019, 10 a.m. 23.4 ppb (22) 2.5 ppb (2) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 4.0 ppb (3) 0.34 ppb (4) N/A N/A 22.0
 
Sept. 18, 2019, 9 a.m. 26.5 ppb (25) 2.3 ppb (2) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 4.0 ppb (3) 0.31 ppb (3) N/A N/A 25.0
 
Sept. 18, 2019, 8 a.m. 27.6 ppb (26) 2.1 ppb (2) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 5.0 ppb (4) 0.31 ppb (3) N/A N/A 26.0
 
Sept. 18, 2019, 7 a.m. 26.7 ppb (25) 1.0 ppb (1) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 8.0 ppb (6) 0.3 ppb (3) N/A N/A 25.0
 
Sept. 18, 2019, 6 a.m. 21.4 ppb (20) 0.2 ppb (0) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 16.0 ppb (12) 0.27 ppb (3) N/A N/A 20.0
 
Sept. 18, 2019, 5 a.m. 10.0 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 29.0 ppb (22) 0.18 ppb (2) N/A N/A 22.0
 
Sept. 18, 2019, 4 a.m. 10.3 ppb (10) 0.1 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 34.0 ppb (26) 0.23 ppb (3) N/A N/A 26.0
 
Sept. 18, 2019, 3 a.m. 8.1 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.16 ppb (2) N/A N/A 20.0
 
Sept. 18, 2019, 2 a.m. 6.1 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) N/A N/A 22.0
 
Sept. 18, 2019, midnight 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 66.0 ppb (51) 0.16 ppb (2) N/A N/A 51.0
 
Sept. 17, 2019, 11 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 70.0 ppb (54) 0.17 ppb (2) N/A N/A 54.0
 
Sept. 17, 2019, 10 p.m. 0.4 ppb (0) 0.6 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 64.0 ppb (49) 0.14 ppb (2) N/A N/A 49.0
 
Sept. 17, 2019, 9 p.m. -0.5 ppb (0) 0.6 ppb (1) N/A N/A N/A 0.0 ppb (0) 57.0 ppb (44) 0.13 ppb (1) N/A N/A 44.0
 
Sept. 17, 2019, 8 p.m. 1.9 ppb (2) 1.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 48.0 ppb (37) 0.12 ppb (1) N/A N/A 37.0
 
Sept. 17, 2019, 7 p.m. 9.4 ppb (9) 4.2 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A N/A 30.0
 
Sept. 17, 2019, 6 p.m. 14.3 ppb (13) 6.4 ppb (6) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) N/A N/A 25.0
 
Sept. 17, 2019, 5 p.m. 13.5 ppb (12) 6.1 ppb (6) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) N/A N/A 25.0
 
Sept. 17, 2019, 4 p.m. 36.8 ppb (34) 18.2 ppb (17) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 18.0 ppb (14) 0.3 ppb (3) N/A N/A 34.0
 
Sept. 17, 2019, 3 p.m. 39.9 ppb (37) 20.5 ppb (19) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 12.0 ppb (9) 0.36 ppb (4) N/A N/A 37.0
 
Sept. 17, 2019, 2 p.m. 70.7 ppb (68) 48.3 ppb (45) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 4.0 ppb (3) 0.77 ppb (9) N/A N/A 68.0
 
Sept. 17, 2019, 1 p.m. 63.2 ppb (60) 45.4 ppb (42) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 3.0 ppb (2) 0.64 ppb (7) N/A N/A 60.0
 
Sept. 17, 2019, noon 37.2 ppb (34) 20.4 ppb (19) N/A 17.0 ppb (16) N/A 1.0 ppb (1) 3.0 ppb (2) 0.53 ppb (6) N/A N/A 34.0
 
Sept. 17, 2019, 11 a.m. 32.4 ppb (30) 14.6 ppb (14) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 3.0 ppb (2) 0.47 ppb (5) N/A N/A 30.0
 
Sept. 17, 2019, 10 a.m. 25.0 ppb (23) 7.0 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 3.0 ppb (2) 0.34 ppb (4) N/A N/A 23.0
 
Sept. 17, 2019, 9 a.m. 18.1 ppb (17) 0.8 ppb (1) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (4) 0.25 ppb (3) N/A N/A 17.0
 
Sept. 17, 2019, 8 a.m. 16.3 ppb (15) 0.2 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 8.0 ppb (6) 0.24 ppb (3) N/A N/A 15.0
 
Sept. 17, 2019, 7 a.m. 12.3 ppb (11) -0.1 ppb (0) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 15.0 ppb (12) 0.21 ppb (2) N/A N/A 12.0
 
Sept. 17, 2019, 6 a.m. 7.8 ppb (7) -0.2 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.21 ppb (2) N/A N/A 15.0
 
Sept. 17, 2019, 5 a.m. 8.6 ppb (8) -0.3 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 24.0 ppb (18) 0.23 ppb (3) N/A N/A 18.0
 
Sept. 17, 2019, 4 a.m. 8.2 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.25 ppb (3) N/A N/A 20.0
 
Sept. 17, 2019, 3 a.m. 8.7 ppb (8) 0.1 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.21 ppb (2) N/A N/A 24.0
 
Sept. 17, 2019, 2 a.m. 7.8 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 31.0 ppb (24) 0.14 ppb (2) N/A N/A 24.0
 
Sept. 17, 2019, 1 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) N/A N/A 31.0
 
Sept. 17, 2019, midnight 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 52.0 ppb (40) 0.12 ppb (1) N/A N/A 40.0
 
Sept. 16, 2019, 11 p.m. 0.4 ppb (0) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 58.0 ppb (45) 0.11 ppb (1) N/A N/A 45.0
 
Sept. 16, 2019, 10 p.m. -0.3 ppb (0) 0.5 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (1) 57.0 ppb (44) 0.11 ppb (1) N/A N/A 44.0
 
Sept. 16, 2019, 9 p.m. 1.2 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 58.0 ppb (45) 0.15 ppb (2) N/A N/A 45.0
 
Sept. 16, 2019, 8 p.m. 5.5 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 63.0 ppb (48) 0.21 ppb (2) N/A N/A 48.0
 
Sept. 16, 2019, 7 p.m. 9.2 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) 0.19 ppb (2) N/A N/A 42.0
 
Sept. 16, 2019, 6 p.m. 17.6 ppb (16) 4.5 ppb (4) N/A 13.0 ppb (12) N/A 1.0 ppb (1) 47.0 ppb (36) 0.25 ppb (3) N/A N/A 36.0
 
Sept. 16, 2019, 5 p.m. 14.8 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 45.0 ppb (35) 0.23 ppb (3) N/A N/A 35.0
 
Sept. 16, 2019, 4 p.m. 33.9 ppb (31) 12.3 ppb (11) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 28.0 ppb (22) 0.37 ppb (4) N/A N/A 31.0
 
Sept. 16, 2019, 3 p.m. 47.0 ppb (44) 18.5 ppb (17) N/A 29.0 ppb (27) N/A 1.0 ppb (1) 13.0 ppb (10) 0.5 ppb (6) N/A N/A 44.0
 
Sept. 16, 2019, 2 p.m. 71.5 ppb (69) 43.6 ppb (40) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 4.0 ppb (3) 0.72 ppb (8) N/A N/A 69.0
 
Sept. 16, 2019, 1 p.m. 74.2 ppb (71) 51.4 ppb (48) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 3.0 ppb (2) 0.74 ppb (8) N/A N/A 71.0
 
Sept. 16, 2019, noon 74.1 ppb (71) 48.7 ppb (45) N/A 26.0 ppb (24) N/A 2.0 ppb (3) 3.0 ppb (2) 0.61 ppb (7) N/A N/A 71.0
 
Sept. 16, 2019, 11 a.m. 45.9 ppb (42) 21.0 ppb (19) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 3.0 ppb (2) 0.45 ppb (5) N/A N/A 42.0
 
Sept. 16, 2019, 10 a.m. 29.3 ppb (27) 4.9 ppb (5) N/A 24.0 ppb (22) N/A 1.0 ppb (1) 4.0 ppb (3) 0.39 ppb (4) N/A N/A 27.0
 
Sept. 16, 2019, 9 a.m. 26.1 ppb (24) 1.3 ppb (1) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 5.0 ppb (4) 0.45 ppb (5) N/A N/A 24.0
 
Sept. 16, 2019, 8 a.m. 21.6 ppb (20) 0.6 ppb (1) N/A 21.0 ppb (19) N/A 1.0 ppb (1) 12.0 ppb (9) 0.49 ppb (5) N/A N/A 20.0
 
Sept. 16, 2019, 7 a.m. 25.8 ppb (24) 0.6 ppb (1) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 8.0 ppb (6) 0.52 ppb (6) N/A N/A 24.0
 
Sept. 16, 2019, 6 a.m. 23.1 ppb (21) 1.6 ppb (1) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 12.0 ppb (9) 0.47 ppb (5) N/A N/A 21.0
 
Sept. 16, 2019, 5 a.m. 32.4 ppb (30) 7.5 ppb (7) N/A 25.0 ppb (23) N/A 1.0 ppb (1) 16.0 ppb (12) 0.32 ppb (4) N/A N/A 30.0
 
Sept. 16, 2019, 4 a.m. 21.6 ppb (20) 6.9 ppb (6) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 29.0 ppb (22) 0.23 ppb (3) N/A N/A 22.0
 
Sept. 16, 2019, 3 a.m. 8.9 ppb (8) -0.2 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 42.0 ppb (32) 0.18 ppb (2) N/A N/A 32.0
 
Sept. 16, 2019, 2 a.m. 9.6 ppb (9) 1.5 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 46.0 ppb (35) 0.19 ppb (2) N/A N/A 35.0
 
Sept. 16, 2019, 1 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 62.0 ppb (48) 0.17 ppb (2) N/A N/A 48.0
 
Sept. 16, 2019, midnight -2.3 ppb (0) -0.2 ppb (0) N/A N/A N/A 1.0 ppb (1) 69.0 ppb (53) 0.16 ppb (2) N/A N/A 53.0
 
Sept. 15, 2019, 11 p.m. -2.3 ppb (0) 0.2 ppb (0) N/A N/A N/A 1.0 ppb (1) 68.0 ppb (52) 0.15 ppb (2) N/A N/A 52.0
 
Sept. 15, 2019, 10 p.m. -2.1 ppb (0) 0.1 ppb (0) N/A N/A N/A 1.0 ppb (1) 74.0 ppb (57) 0.17 ppb (2) N/A N/A 57.0
 
Sept. 15, 2019, 9 p.m. -2.5 ppb (0) 0.1 ppb (0) N/A N/A N/A 1.0 ppb (1) 79.0 ppb (62) 0.18 ppb (2) N/A N/A 62.0
 
Sept. 15, 2019, 8 p.m. -2.5 ppb (0) 0.5 ppb (0) N/A N/A N/A 1.0 ppb (1) 71.0 ppb (55) 0.14 ppb (2) N/A N/A 55.0
 
Sept. 15, 2019, 7 p.m. 0.0 ppb (0) 0.9 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (1) 71.0 ppb (55) 0.21 ppb (2) N/A N/A 55.0
 
Sept. 15, 2019, 6 p.m. 4.6 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 70.0 ppb (54) 0.23 ppb (3) N/A N/A 54.0
 
Sept. 15, 2019, 5 p.m. 21.6 ppb (20) 6.0 ppb (6) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 61.0 ppb (47) 0.3 ppb (3) N/A N/A 47.0
 
Sept. 15, 2019, 4 p.m. 11.1 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 59.0 ppb (45) 0.33 ppb (4) N/A N/A 45.0
 
Sept. 15, 2019, 3 p.m. 14.4 ppb (13) 2.7 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 41.0 ppb (32) 0.41 ppb (5) N/A N/A 32.0
 
Sept. 15, 2019, 2 p.m. 17.1 ppb (16) 1.9 ppb (2) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 23.0 ppb (18) 0.53 ppb (6) N/A N/A 18.0
 
Sept. 15, 2019, 1 p.m. 18.9 ppb (18) 0.1 ppb (0) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 16.0 ppb (12) 0.47 ppb (5) N/A N/A 18.0
 
Sept. 15, 2019, noon 13.4 ppb (12) -0.1 ppb (0) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 19.0 ppb (15) 0.41 ppb (5) N/A N/A 15.0
 
Sept. 15, 2019, 11 a.m. 11.1 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 22.0 ppb (17) 0.37 ppb (4) N/A N/A 17.0
 
Sept. 15, 2019, 10 a.m. 14.1 ppb (13) -0.1 ppb (0) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 23.0 ppb (18) 0.48 ppb (5) N/A N/A 18.0
 
Sept. 15, 2019, 9 a.m. 21.9 ppb (20) 0.0 ppb (0) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 16.0 ppb (12) 0.71 ppb (8) N/A N/A 20.0
 
Sept. 15, 2019, 8 a.m. 24.0 ppb (22) 0.3 ppb (0) N/A 24.0 ppb (22) N/A 1.0 ppb (1) 18.0 ppb (14) 0.81 ppb (9) N/A N/A 22.0
 
Sept. 15, 2019, 7 a.m. 19.4 ppb (18) 0.0 ppb (0) N/A 20.0 ppb (19) N/A 1.0 ppb (1) 23.0 ppb (18) 0.62 ppb (7) N/A N/A 19.0
 
Sept. 15, 2019, 6 a.m. 22.7 ppb (21) 0.2 ppb (0) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 17.0 ppb (13) 0.61 ppb (7) N/A N/A 21.0
 
Sept. 15, 2019, 5 a.m. 18.7 ppb (17) 0.0 ppb (0) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 26.0 ppb (20) 0.51 ppb (6) N/A N/A 20.0
 
Sept. 15, 2019, 4 a.m. 16.2 ppb (15) -0.2 ppb (0) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 34.0 ppb (26) 0.36 ppb (4) N/A N/A 26.0
 
Sept. 15, 2019, 3 a.m. 10.0 ppb (9) -0.2 ppb (0) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 49.0 ppb (38) 0.32 ppb (4) N/A N/A 38.0
 
Sept. 15, 2019, 2 a.m. 7.2 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 63.0 ppb (48) 0.28 ppb (3) N/A N/A 48.0
 
Sept. 15, 2019, 1 a.m. 5.8 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 85.0 ppb (67) 0.23 ppb (3) N/A N/A 67.0
 
Sept. 15, 2019, midnight 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 114.0 ppb (91) 0.28 ppb (3) N/A N/A 91.0
 
Sept. 14, 2019, 11 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 115.0 ppb (92) 0.29 ppb (3) N/A N/A 92.0
 
Sept. 14, 2019, 10 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 110.0 ppb (88) 0.29 ppb (3) N/A N/A 88.0
 
Sept. 14, 2019, 9 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 107.0 ppb (85) 0.24 ppb (3) N/A N/A 85.0
 
Sept. 14, 2019, 8 p.m. 0.0 ppb (0) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 91.0 ppb (72) 0.19 ppb (2) N/A N/A 72.0