San Bernardino Co CA, US: 34.068114, -117.525796
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 25, 2019, 4 p.m. | 30.9 ppb (29) | 13.4 ppb (12) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 29.0 | |
| May 25, 2019, 3 p.m. | 55.3 ppb (51) | 31.0 ppb (29) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.77 ppb (9) | N/A | N/A | 51.0 | |
| May 25, 2019, 2 p.m. | 87.9 ppb (86) | 57.5 ppb (54) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | N/A | 86.0 | |
| May 25, 2019, 1 p.m. | 56.1 ppb (52) | 36.8 ppb (34) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 52.0 | |
| May 25, 2019, noon | 55.2 ppb (51) | 34.5 ppb (32) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 51.0 | |
| May 25, 2019, 11 a.m. | 51.2 ppb (47) | 22.3 ppb (21) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 47.0 | |
| May 25, 2019, 10 a.m. | 44.8 ppb (41) | 12.7 ppb (12) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 41.0 | |
| May 25, 2019, 9 a.m. | 54.0 ppb (50) | 20.6 ppb (19) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 50.0 | |
| May 25, 2019, 8 a.m. | 51.2 ppb (47) | 19.7 ppb (18) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 47.0 | |
| May 25, 2019, 7 a.m. | 27.5 ppb (25) | 4.5 ppb (4) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 25.0 | |
| May 25, 2019, 6 a.m. | 24.2 ppb (22) | 2.7 ppb (3) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 22.0 | |
| May 25, 2019, 5 a.m. | 35.5 ppb (33) | 9.3 ppb (9) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 33.0 | |
| May 25, 2019, 4 a.m. | 41.6 ppb (39) | 13.5 ppb (12) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 39.0 | |
| May 25, 2019, 3 a.m. | 39.8 ppb (37) | 13.4 ppb (12) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 37.0 | |
| May 25, 2019, 2 a.m. | 39.0 ppb (36) | 12.8 ppb (12) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 36.0 | |
| May 25, 2019, 1 a.m. | 45.4 ppb (42) | 14.8 ppb (14) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 42.0 | |
| May 25, 2019, midnight | 38.2 ppb (35) | 12.1 ppb (11) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 35.0 | |
| May 24, 2019, 11 p.m. | 38.5 ppb (36) | 14.3 ppb (13) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 36.0 | |
| May 24, 2019, 10 p.m. | 28.2 ppb (26) | 10.5 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 26.0 | |
| May 24, 2019, 9 p.m. | 22.7 ppb (21) | 8.5 ppb (8) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 21.0 | |
| May 24, 2019, 8 p.m. | 29.2 ppb (27) | 11.7 ppb (11) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 27.0 | |
| May 24, 2019, 7 p.m. | 45.3 ppb (42) | 20.8 ppb (19) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 42.0 | |
| May 24, 2019, 6 p.m. | 49.3 ppb (46) | 23.5 ppb (22) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 46.0 | |
| May 24, 2019, 5 p.m. | 55.8 ppb (52) | 28.7 ppb (27) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 52.0 | |
| May 24, 2019, 4 p.m. | 38.0 ppb (35) | 18.0 ppb (17) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 35.0 | |
| May 24, 2019, 3 p.m. | 32.5 ppb (30) | 15.7 ppb (15) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 30.0 | |
| May 24, 2019, 2 p.m. | 55.7 ppb (52) | 34.3 ppb (32) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 52.0 | |
| May 24, 2019, 1 p.m. | 111.6 ppb (102) | 84.4 ppb (82) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 102.0 | |
| May 24, 2019, noon | 87.2 ppb (85) | 62.7 ppb (59) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 85.0 | |
| May 24, 2019, 11 a.m. | 60.4 ppb (57) | 39.6 ppb (37) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 57.0 | |
| May 24, 2019, 10 a.m. | 64.9 ppb (62) | 45.6 ppb (42) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 62.0 | |
| May 24, 2019, 9 a.m. | 55.1 ppb (51) | 34.8 ppb (32) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 51.0 | |
| May 24, 2019, 8 a.m. | 53.4 ppb (49) | 30.2 ppb (28) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 49.0 | |
| May 24, 2019, 7 a.m. | 75.3 ppb (73) | 45.0 ppb (42) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | N/A | 73.0 | |
| May 24, 2019, 6 a.m. | 90.3 ppb (89) | 57.2 ppb (53) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 89.0 | |
| May 24, 2019, 5 a.m. | 94.0 ppb (93) | 54.9 ppb (51) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | N/A | 93.0 | |
| May 24, 2019, 4 a.m. | 20.0 ppb (19) | 2.6 ppb (2) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 19.0 | |
| May 24, 2019, 3 a.m. | 10.2 ppb (9) | 0.4 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 9.0 | |
| May 24, 2019, 2 a.m. | 7.2 ppb (7) | 0.3 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | N/A | 7.0 | |
| May 24, 2019, 1 a.m. | 10.0 ppb (9) | 1.4 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 9.0 | |
| May 24, 2019, midnight | 14.0 ppb (13) | 2.7 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 13.0 | |
| May 23, 2019, 11 p.m. | 16.6 ppb (15) | 2.3 ppb (2) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 15.0 | |
| May 23, 2019, 10 p.m. | 21.9 ppb (20) | 3.1 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 20.0 | |
| May 23, 2019, 9 p.m. | 20.9 ppb (19) | 2.6 ppb (2) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 19.0 | |
| May 23, 2019, 8 p.m. | 27.9 ppb (26) | 10.1 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 26.0 | |
| May 23, 2019, 7 p.m. | 13.3 ppb (12) | 2.2 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 12.0 | |
| May 23, 2019, 6 p.m. | 16.4 ppb (15) | 2.4 ppb (2) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 15.0 | |
| May 23, 2019, 5 p.m. | 35.3 ppb (33) | 13.8 ppb (13) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 33.0 | |
| May 23, 2019, 4 p.m. | 55.3 ppb (51) | 29.2 ppb (27) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 51.0 | |
| May 23, 2019, 3 p.m. | 37.5 ppb (35) | 13.4 ppb (12) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 35.0 | |
| May 23, 2019, 2 p.m. | 37.2 ppb (34) | 11.8 ppb (11) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 34.0 | |
| May 23, 2019, 1 p.m. | 35.3 ppb (33) | 10.1 ppb (9) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 33.0 | |
| May 23, 2019, noon | 28.2 ppb (26) | 5.5 ppb (5) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 26.0 | |
| May 23, 2019, 11 a.m. | 23.1 ppb (21) | 4.5 ppb (4) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 21.0 | |
| May 23, 2019, 10 a.m. | 32.1 ppb (30) | 8.0 ppb (7) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 30.0 | |
| May 23, 2019, 9 a.m. | 12.5 ppb (12) | 1.1 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 12.0 | |
| May 23, 2019, 8 a.m. | 18.8 ppb (17) | 1.9 ppb (2) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 17.0 | |
| May 23, 2019, 7 a.m. | 20.5 ppb (19) | 1.5 ppb (1) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 19.0 | |
| May 23, 2019, 6 a.m. | 21.7 ppb (20) | 0.8 ppb (1) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 20.0 | |
| May 23, 2019, 5 a.m. | 34.2 ppb (32) | 6.3 ppb (6) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 32.0 | |
| May 23, 2019, 4 a.m. | 16.0 ppb (15) | 1.3 ppb (1) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 15.0 | |
| May 23, 2019, 3 a.m. | 22.4 ppb (21) | 3.0 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 21.0 | |
| May 23, 2019, 2 a.m. | 30.6 ppb (28) | 5.3 ppb (5) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 28.0 | |
| May 23, 2019, 1 a.m. | 41.9 ppb (39) | 13.4 ppb (12) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 39.0 | |
| May 23, 2019, midnight | 43.0 ppb (40) | 15.5 ppb (14) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 40.0 | |
| May 22, 2019, 11 p.m. | 38.0 ppb (35) | 10.8 ppb (10) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 35.0 | |
| May 22, 2019, 10 p.m. | 24.9 ppb (23) | 4.0 ppb (4) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 23.0 | |
| May 22, 2019, 9 p.m. | 45.4 ppb (42) | 15.3 ppb (14) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 42.0 | |
| May 22, 2019, 8 p.m. | 25.1 ppb (23) | 4.9 ppb (5) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 23.0 | |
| May 22, 2019, 7 p.m. | 14.8 ppb (14) | 1.7 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | N/A | 14.0 | |
| May 22, 2019, 6 p.m. | 40.1 ppb (37) | 19.2 ppb (18) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 37.0 | |
| May 22, 2019, 5 p.m. | 39.8 ppb (37) | 20.0 ppb (19) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 37.0 | |
| May 22, 2019, 4 p.m. | 49.4 ppb (46) | 26.2 ppb (24) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 46.0 | |
| May 22, 2019, 3 p.m. | 52.4 ppb (49) | 28.3 ppb (26) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 49.0 | |
| May 22, 2019, 2 p.m. | 53.7 ppb (50) | 27.5 ppb (25) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 50.0 | |
| May 22, 2019, 1 p.m. | 44.4 ppb (41) | 16.3 ppb (15) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 41.0 | |
| May 22, 2019, noon | 75.4 ppb (73) | 40.0 ppb (37) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 73.0 | |
| May 22, 2019, 11 a.m. | 46.8 ppb (43) | 20.1 ppb (19) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 43.0 | |
| May 22, 2019, 10 a.m. | 20.3 ppb (19) | 4.8 ppb (4) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 19.0 | |
| May 22, 2019, 9 a.m. | 10.7 ppb (10) | 1.1 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | N/A | 10.0 | |
| May 22, 2019, 8 a.m. | 25.8 ppb (24) | 4.2 ppb (4) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 24.0 | |
| May 22, 2019, 7 a.m. | 38.7 ppb (36) | 12.9 ppb (12) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 36.0 | |
| May 22, 2019, 6 a.m. | 17.5 ppb (16) | 2.4 ppb (2) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 16.0 | |
| May 22, 2019, 5 a.m. | 35.2 ppb (33) | 11.5 ppb (11) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 33.0 | |
| May 22, 2019, 4 a.m. | 34.2 ppb (32) | 12.4 ppb (11) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 32.0 | |
| May 22, 2019, 3 a.m. | 38.1 ppb (35) | 15.2 ppb (14) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 35.0 | |
| May 22, 2019, 2 a.m. | 38.0 ppb (35) | 16.3 ppb (15) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 35.0 | |
| May 22, 2019, 1 a.m. | 32.9 ppb (30) | 13.3 ppb (12) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 30.0 | |
| May 22, 2019, midnight | 32.9 ppb (30) | 12.8 ppb (12) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 30.0 | |
| May 21, 2019, 11 p.m. | 35.8 ppb (33) | 15.3 ppb (14) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 33.0 | |
| May 21, 2019, 10 p.m. | 37.0 ppb (34) | 16.6 ppb (15) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 34.0 | |
| May 21, 2019, 9 p.m. | 46.2 ppb (43) | 20.8 ppb (19) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 43.0 | |
| May 21, 2019, 8 p.m. | 50.1 ppb (46) | 22.8 ppb (21) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 46.0 | |
| May 21, 2019, 7 p.m. | 51.8 ppb (48) | 26.5 ppb (25) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 48.0 | |
| May 21, 2019, 6 p.m. | 54.2 ppb (50) | 26.9 ppb (25) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 50.0 | |
| May 21, 2019, 5 p.m. | 47.5 ppb (44) | 23.2 ppb (21) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 44.0 | |
| May 21, 2019, 4 p.m. | 49.7 ppb (46) | 23.7 ppb (22) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 46.0 | |
| May 21, 2019, 3 p.m. | 48.2 ppb (45) | 23.7 ppb (22) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 45.0 | |
| May 21, 2019, 2 p.m. | 69.5 ppb (66) | 36.6 ppb (34) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 66.0 | |
| May 21, 2019, 1 p.m. | 71.8 ppb (69) | 36.4 ppb (34) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 69.0 | |
| May 21, 2019, noon | 63.5 ppb (60) | 30.2 ppb (28) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 60.0 | |
| May 21, 2019, 11 a.m. | 59.0 ppb (55) | 28.4 ppb (26) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 55.0 | |
| May 21, 2019, 10 a.m. | 46.0 ppb (43) | 17.1 ppb (16) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 43.0 | |
| May 21, 2019, 9 a.m. | 39.1 ppb (36) | 11.4 ppb (11) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 36.0 | |
| May 21, 2019, 8 a.m. | 38.7 ppb (36) | 10.2 ppb (9) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 36.0 | |
| May 21, 2019, 7 a.m. | 36.6 ppb (34) | 8.3 ppb (8) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 34.0 | |
| May 21, 2019, 6 a.m. | 27.2 ppb (25) | 5.6 ppb (5) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 25.0 | |
| May 21, 2019, 5 a.m. | 40.7 ppb (38) | 15.3 ppb (14) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 38.0 | |
| May 21, 2019, 4 a.m. | 35.2 ppb (33) | 13.4 ppb (12) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 33.0 | |
| May 21, 2019, 3 a.m. | 35.0 ppb (32) | 13.1 ppb (12) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 32.0 | |
| May 21, 2019, 2 a.m. | 35.0 ppb (32) | 13.4 ppb (12) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 32.0 | |
| May 21, 2019, 1 a.m. | 36.7 ppb (34) | 14.2 ppb (13) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 34.0 | |
| May 21, 2019, midnight | 35.7 ppb (33) | 13.5 ppb (12) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 33.0 | |
| May 20, 2019, 11 p.m. | 38.7 ppb (36) | 14.3 ppb (13) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 36.0 | |
| May 20, 2019, 10 p.m. | 45.2 ppb (42) | 17.1 ppb (16) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 42.0 | |
| May 20, 2019, 9 p.m. | 38.6 ppb (36) | 14.4 ppb (13) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 36.0 | |
| May 20, 2019, 8 p.m. | 41.0 ppb (38) | 17.8 ppb (16) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 38.0 | |
| May 20, 2019, 7 p.m. | 47.7 ppb (44) | 22.5 ppb (21) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 44.0 | |
| May 20, 2019, 6 p.m. | 34.6 ppb (32) | 14.7 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 32.0 | |
| May 20, 2019, 5 p.m. | 32.8 ppb (30) | 15.4 ppb (14) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 30.0 | |
| May 20, 2019, 4 p.m. | 39.8 ppb (37) | 19.5 ppb (18) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 37.0 | |
| May 20, 2019, 3 p.m. | 51.4 ppb (48) | 24.5 ppb (23) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 48.0 | |
| May 20, 2019, 2 p.m. | 65.3 ppb (62) | 31.8 ppb (29) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 62.0 | |
| May 20, 2019, 1 p.m. | 71.1 ppb (68) | 34.5 ppb (32) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 68.0 | |
| May 20, 2019, noon | 53.0 ppb (49) | 22.2 ppb (21) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 49.0 | |
| May 20, 2019, 11 a.m. | 45.6 ppb (42) | 20.7 ppb (19) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 42.0 | |
| May 20, 2019, 10 a.m. | 36.6 ppb (34) | 14.9 ppb (14) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 34.0 | |
| May 20, 2019, 9 a.m. | 21.0 ppb (19) | 8.4 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | N/A | 19.0 | |
| May 20, 2019, 8 a.m. | 14.7 ppb (14) | 5.1 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | N/A | 14.0 | |
| May 20, 2019, 7 a.m. | 18.0 ppb (17) | 6.6 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | N/A | 17.0 | |
| May 20, 2019, 6 a.m. | 18.6 ppb (17) | 6.9 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 17.0 | |
| May 20, 2019, 5 a.m. | 18.2 ppb (17) | 7.3 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 17.0 | |
| May 20, 2019, 4 a.m. | 18.6 ppb (17) | 7.3 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 17.0 | |
| May 20, 2019, 3 a.m. | 19.3 ppb (18) | 7.0 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 18.0 | |
| May 20, 2019, 2 a.m. | 15.9 ppb (15) | 6.1 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 15.0 | |
| May 20, 2019, 1 a.m. | 14.7 ppb (14) | 5.5 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 14.0 | |
| May 20, 2019, midnight | 15.2 ppb (14) | 5.7 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 14.0 | |
| May 19, 2019, 11 p.m. | 15.2 ppb (14) | 6.6 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 14.0 | |
| May 19, 2019, 10 p.m. | 17.9 ppb (17) | 7.3 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 17.0 | |
| May 19, 2019, 9 p.m. | 15.1 ppb (14) | 6.1 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 14.0 | |
| May 19, 2019, 8 p.m. | 13.9 ppb (13) | 5.4 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 13.0 | |
| May 19, 2019, 7 p.m. | 15.5 ppb (14) | 6.2 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 14.0 | |
| May 19, 2019, 6 p.m. | 18.8 ppb (17) | 8.1 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 17.0 | |
| May 19, 2019, 5 p.m. | 13.9 ppb (13) | 4.3 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 13.0 | |
| May 19, 2019, 4 p.m. | 7.8 ppb (7) | 1.7 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | N/A | 7.0 | |
| May 19, 2019, 3 p.m. | 7.4 ppb (7) | 1.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | N/A | 7.0 | |
| May 19, 2019, 2 p.m. | 15.3 ppb (14) | 2.5 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | N/A | 14.0 | |
| May 19, 2019, 1 p.m. | 16.4 ppb (15) | 3.0 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 15.0 | |
| May 19, 2019, noon | 20.7 ppb (19) | 3.9 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 19.0 | |
| May 19, 2019, 11 a.m. | 14.3 ppb (13) | 3.9 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | N/A | 13.0 | |
| May 19, 2019, 10 a.m. | 17.0 ppb (16) | 4.2 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | N/A | 16.0 | |
| May 19, 2019, 9 a.m. | 9.0 ppb (8) | 1.2 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | N/A | 8.0 | |
| May 19, 2019, 8 a.m. | 11.5 ppb (11) | 2.9 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 11.0 | |
| May 19, 2019, 7 a.m. | 15.8 ppb (15) | 2.5 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 15.0 | |
| May 19, 2019, 6 a.m. | 11.8 ppb (11) | 1.4 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 11.0 | |
| May 19, 2019, 5 a.m. | 18.9 ppb (18) | 4.7 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 18.0 | |
| May 19, 2019, 4 a.m. | 19.6 ppb (18) | 5.5 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 18.0 | |
| May 19, 2019, 3 a.m. | 23.1 ppb (21) | 7.0 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 21.0 | |
| May 19, 2019, 2 a.m. | 22.5 ppb (21) | 6.6 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 21.0 | |
| May 19, 2019, 1 a.m. | 21.1 ppb (20) | 5.5 ppb (5) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 20.0 | |
| May 19, 2019, midnight | 22.3 ppb (21) | 6.5 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 21.0 | |
| May 18, 2019, 11 p.m. | 22.5 ppb (21) | 7.5 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 21.0 | |
| May 18, 2019, 10 p.m. | 22.4 ppb (21) | 6.8 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 21.0 | |
| May 18, 2019, 9 p.m. | 19.4 ppb (18) | 5.6 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 18.0 | |
| May 18, 2019, 8 p.m. | 14.9 ppb (14) | 4.3 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 14.0 | |
| May 18, 2019, 7 p.m. | 20.9 ppb (19) | 7.5 ppb (7) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 19.0 | |
| May 18, 2019, 6 p.m. | 21.1 ppb (20) | 7.3 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 20.0 | |
| May 18, 2019, 5 p.m. | 26.9 ppb (25) | 9.8 ppb (9) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 25.0 |