Berkeley (No. 2) CA, US: 37.864767, -122.302741
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 19, 2019, 4 a.m. | 13.4 ppb (12) | 5.7 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | 40.0 ppb (31) | 0.51 ppb (6) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 19, 2019, 3 a.m. | 16.6 ppb (15) | 6.9 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | 37.0 ppb (28) | 0.56 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 19, 2019, 2 a.m. | 20.6 ppb (19) | 6.3 ppb (6) | N/A | 14.0 ppb (13) | N/A | N/A | 34.0 ppb (26) | 0.61 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 19, 2019, 1 a.m. | 26.8 ppb (25) | 9.6 ppb (9) | N/A | 17.0 ppb (16) | N/A | N/A | 34.0 ppb (26) | 0.74 ppb (8) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 19, 2019, midnight | 24.1 ppb (22) | 9.2 ppb (9) | N/A | 15.0 ppb (14) | N/A | N/A | 39.0 ppb (30) | 0.73 ppb (8) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 18, 2019, 11 p.m. | 21.5 ppb (20) | 7.7 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | 40.0 ppb (31) | 0.73 ppb (8) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 18, 2019, 10 p.m. | 18.1 ppb (17) | 7.7 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | 40.0 ppb (31) | 0.7 ppb (8) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| March 18, 2019, 9 p.m. | 27.0 ppb (25) | 12.6 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | 35.0 ppb (27) | 0.75 ppb (8) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 18, 2019, 8 p.m. | 43.2 ppb (40) | 18.9 ppb (18) | N/A | 24.0 ppb (22) | N/A | N/A | 28.0 ppb (22) | 0.86 ppb (10) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 18, 2019, 7 p.m. | 45.5 ppb (42) | 19.1 ppb (18) | N/A | 26.0 ppb (24) | N/A | N/A | 27.0 ppb (21) | 0.83 ppb (9) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 18, 2019, 6 p.m. | 54.1 ppb (50) | 25.1 ppb (23) | N/A | 29.0 ppb (27) | N/A | N/A | 21.0 ppb (16) | 0.86 ppb (10) | N/A | 11.0 μg/m3 (46) | 50.0 | |
| March 18, 2019, 5 p.m. | 71.7 ppb (69) | 37.5 ppb (35) | N/A | 34.0 ppb (31) | N/A | N/A | 12.0 ppb (9) | 0.9 ppb (10) | N/A | 16.0 μg/m3 (59) | 69.0 | |
| March 18, 2019, 4 p.m. | 85.8 ppb (84) | 48.8 ppb (45) | N/A | 37.0 ppb (34) | N/A | N/A | 7.0 ppb (5) | 1.05 ppb (12) | N/A | 14.0 μg/m3 (54) | 84.0 | |
| March 18, 2019, 3 p.m. | 80.8 ppb (79) | 47.3 ppb (44) | N/A | 34.0 ppb (31) | N/A | N/A | 4.0 ppb (3) | 0.99 ppb (11) | N/A | 16.0 μg/m3 (59) | 79.0 | |
| March 18, 2019, 2 p.m. | 77.0 ppb (74) | 45.9 ppb (42) | N/A | 31.0 ppb (29) | N/A | N/A | 1.0 ppb (1) | 0.91 ppb (10) | N/A | 15.0 μg/m3 (56) | 74.0 | |
| March 18, 2019, 1 p.m. | 59.4 ppb (56) | 31.8 ppb (29) | N/A | 28.0 ppb (26) | N/A | N/A | 0.0 ppb (0) | 0.75 ppb (8) | N/A | 10.0 μg/m3 (42) | 56.0 | |
| March 18, 2019, noon | 67.0 ppb (64) | 36.1 ppb (33) | N/A | 31.0 ppb (29) | N/A | N/A | 1.0 ppb (1) | 0.74 ppb (8) | N/A | 17.0 μg/m3 (61) | 64.0 | |
| March 18, 2019, 11 a.m. | 42.8 ppb (40) | 16.9 ppb (16) | N/A | 26.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | 0.61 ppb (7) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 18, 2019, 10 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, 9 a.m. | 24.2 ppb (22) | 1.1 ppb (1) | N/A | 23.0 ppb (21) | N/A | N/A | 3.0 ppb (2) | 0.6 ppb (7) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 18, 2019, 8 a.m. | 34.1 ppb (32) | 6.9 ppb (6) | N/A | 27.0 ppb (25) | N/A | N/A | 2.0 ppb (2) | 0.7 ppb (8) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 18, 2019, 7 a.m. | 31.3 ppb (29) | 4.6 ppb (4) | N/A | 27.0 ppb (25) | N/A | N/A | 2.0 ppb (2) | 0.73 ppb (8) | N/A | 20.0 μg/m3 (67) | 67.0 | |
| March 18, 2019, 6 a.m. | 30.6 ppb (28) | 4.1 ppb (4) | N/A | 27.0 ppb (25) | N/A | N/A | 5.0 ppb (4) | 0.73 ppb (8) | N/A | 19.0 μg/m3 (65) | 65.0 | |
| March 18, 2019, 5 a.m. | 35.2 ppb (33) | 6.7 ppb (6) | N/A | 29.0 ppb (27) | N/A | N/A | 6.0 ppb (5) | 0.8 ppb (9) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 18, 2019, 4 a.m. | 30.0 ppb (28) | 6.7 ppb (6) | N/A | 23.0 ppb (21) | N/A | N/A | 15.0 ppb (12) | 0.77 ppb (9) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 18, 2019, 3 a.m. | 23.0 ppb (21) | 6.2 ppb (6) | N/A | 17.0 ppb (16) | N/A | N/A | 24.0 ppb (18) | 0.7 ppb (8) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 18, 2019, 2 a.m. | 34.7 ppb (32) | 8.4 ppb (8) | N/A | 26.0 ppb (24) | N/A | N/A | 20.0 ppb (15) | 0.79 ppb (9) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 18, 2019, 1 a.m. | 9.1 ppb (8) | 1.2 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 47.0 ppb (36) | 0.56 ppb (6) | N/A | 8.0 μg/m3 (33) | 36.0 | |
| March 18, 2019, midnight | 19.8 ppb (18) | 4.2 ppb (4) | N/A | 16.0 ppb (15) | N/A | N/A | 40.0 ppb (31) | 0.72 ppb (8) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 17, 2019, 11 p.m. | 23.2 ppb (21) | 7.1 ppb (7) | N/A | 16.0 ppb (15) | N/A | N/A | 41.0 ppb (32) | 0.79 ppb (9) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 17, 2019, 10 p.m. | 17.4 ppb (16) | 6.2 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | 45.0 ppb (35) | 0.76 ppb (8) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 17, 2019, 9 p.m. | 20.7 ppb (19) | 7.7 ppb (7) | N/A | 13.0 ppb (12) | N/A | N/A | 38.0 ppb (29) | 0.82 ppb (9) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 17, 2019, 8 p.m. | 24.3 ppb (23) | 8.1 ppb (8) | N/A | 16.0 ppb (15) | N/A | N/A | 30.0 ppb (23) | 0.81 ppb (9) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 17, 2019, 7 p.m. | 26.1 ppb (24) | 11.3 ppb (10) | N/A | 15.0 ppb (14) | N/A | N/A | 23.0 ppb (18) | 0.85 ppb (9) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 17, 2019, 6 p.m. | 21.8 ppb (20) | 10.8 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | 20.0 ppb (15) | 0.69 ppb (8) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 17, 2019, 5 p.m. | 28.2 ppb (26) | 14.0 ppb (13) | N/A | 14.0 ppb (13) | N/A | N/A | 17.0 ppb (13) | 0.74 ppb (8) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 17, 2019, 4 p.m. | 36.9 ppb (34) | 19.7 ppb (18) | N/A | 17.0 ppb (16) | N/A | N/A | 11.0 ppb (8) | 0.9 ppb (10) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 17, 2019, 3 p.m. | 34.2 ppb (32) | 14.4 ppb (13) | N/A | 20.0 ppb (19) | N/A | N/A | 7.0 ppb (5) | 0.77 ppb (9) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 17, 2019, 2 p.m. | 34.8 ppb (32) | 14.5 ppb (13) | N/A | 20.0 ppb (19) | N/A | N/A | 4.0 ppb (3) | 0.64 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 17, 2019, 1 p.m. | 19.2 ppb (18) | 2.4 ppb (2) | N/A | 17.0 ppb (16) | N/A | N/A | 7.0 ppb (5) | 0.41 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 17, 2019, noon | 15.3 ppb (14) | 2.7 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | 13.0 ppb (10) | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 17, 2019, 11 a.m. | 11.4 ppb (11) | 0.7 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | 13.0 ppb (10) | 0.37 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 17, 2019, 9 a.m. | 8.8 ppb (8) | 0.4 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 16.0 ppb (12) | 0.42 ppb (5) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 17, 2019, 8 a.m. | 7.9 ppb (7) | 0.3 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 18.0 ppb (14) | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 17, 2019, 7 a.m. | 10.4 ppb (10) | 1.5 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | 20.0 ppb (15) | 0.42 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 17, 2019, 6 a.m. | 13.2 ppb (12) | 6.0 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | 24.0 ppb (18) | 0.56 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 17, 2019, 5 a.m. | 15.6 ppb (14) | 6.6 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | 22.0 ppb (17) | 0.63 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 17, 2019, 4 a.m. | 20.1 ppb (19) | 7.8 ppb (7) | N/A | 12.0 ppb (11) | N/A | N/A | 19.0 ppb (15) | 0.65 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 17, 2019, 3 a.m. | 21.6 ppb (20) | 7.7 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | 17.0 ppb (13) | 0.65 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 17, 2019, 2 a.m. | 23.0 ppb (21) | 6.3 ppb (6) | N/A | 17.0 ppb (16) | N/A | N/A | 22.0 ppb (17) | 0.6 ppb (7) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 17, 2019, 1 a.m. | 18.0 ppb (17) | 4.7 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | 30.0 ppb (23) | 0.62 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 17, 2019, midnight | 17.2 ppb (16) | 7.9 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | 32.0 ppb (25) | 0.63 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 16, 2019, 11 p.m. | 22.8 ppb (21) | 9.7 ppb (9) | N/A | 13.0 ppb (12) | N/A | N/A | 33.0 ppb (25) | 0.67 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, 10 p.m. | 24.4 ppb (23) | 9.0 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | 37.0 ppb (28) | 0.79 ppb (9) | N/A | 4.0 μg/m3 (17) | 28.0 | |
| March 16, 2019, 9 p.m. | 22.7 ppb (21) | 9.8 ppb (9) | N/A | 13.0 ppb (12) | N/A | N/A | 37.0 ppb (28) | 0.85 ppb (9) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 16, 2019, 8 p.m. | 23.7 ppb (22) | 11.3 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | 29.0 ppb (22) | 0.83 ppb (9) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, 7 p.m. | 32.9 ppb (30) | 16.9 ppb (16) | N/A | 16.0 ppb (15) | N/A | N/A | 21.0 ppb (16) | 0.86 ppb (10) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 16, 2019, 6 p.m. | 32.5 ppb (30) | 18.2 ppb (17) | N/A | 14.0 ppb (13) | N/A | N/A | 16.0 ppb (12) | 0.73 ppb (8) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, 5 p.m. | 36.5 ppb (34) | 20.0 ppb (19) | N/A | 17.0 ppb (16) | N/A | N/A | 15.0 ppb (12) | 0.75 ppb (8) | N/A | 8.0 μg/m3 (33) | 34.0 | |
| March 16, 2019, 4 p.m. | 49.5 ppb (46) | 29.9 ppb (28) | N/A | 20.0 ppb (19) | N/A | N/A | 10.0 ppb (8) | 0.98 ppb (11) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 16, 2019, 3 p.m. | 68.3 ppb (65) | 42.3 ppb (39) | N/A | 26.0 ppb (24) | N/A | N/A | 4.0 ppb (3) | 1.03 ppb (11) | N/A | 19.0 μg/m3 (65) | 65.0 | |
| March 16, 2019, 2 p.m. | 48.7 ppb (45) | 23.1 ppb (21) | N/A | 26.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | 0.66 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 16, 2019, 1 p.m. | 36.6 ppb (34) | 12.8 ppb (12) | N/A | 24.0 ppb (22) | N/A | N/A | 0.0 ppb (0) | 0.5 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 16, 2019, noon | 25.0 ppb (23) | 4.7 ppb (4) | N/A | 20.0 ppb (19) | N/A | N/A | 2.0 ppb (2) | 0.47 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, 11 a.m. | 17.4 ppb (16) | 1.9 ppb (2) | N/A | 16.0 ppb (15) | N/A | N/A | 9.0 ppb (7) | 0.42 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 16, 2019, 10 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 16, 2019, 9 a.m. | 15.2 ppb (14) | 0.9 ppb (1) | N/A | 14.0 ppb (13) | N/A | N/A | 12.0 ppb (9) | 0.47 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 16, 2019, 8 a.m. | 22.4 ppb (21) | 3.7 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | 10.0 ppb (8) | 0.61 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 16, 2019, 7 a.m. | 26.8 ppb (25) | 3.8 ppb (4) | N/A | 23.0 ppb (21) | N/A | N/A | 7.0 ppb (5) | 0.66 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 16, 2019, 6 a.m. | 21.4 ppb (20) | 4.3 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | 17.0 ppb (13) | 0.59 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 16, 2019, 5 a.m. | 28.5 ppb (26) | 9.5 ppb (9) | N/A | 19.0 ppb (18) | N/A | N/A | 17.0 ppb (13) | 0.72 ppb (8) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 16, 2019, 4 a.m. | 37.1 ppb (34) | 12.9 ppb (12) | N/A | 24.0 ppb (22) | N/A | N/A | 15.0 ppb (12) | 0.74 ppb (8) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 16, 2019, 3 a.m. | 37.7 ppb (35) | 14.0 ppb (13) | N/A | 24.0 ppb (22) | N/A | N/A | 15.0 ppb (12) | 0.77 ppb (9) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, 2 a.m. | 35.7 ppb (33) | 10.7 ppb (10) | N/A | 25.0 ppb (23) | N/A | N/A | 27.0 ppb (21) | 0.75 ppb (8) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 16, 2019, 1 a.m. | 38.3 ppb (35) | 11.3 ppb (10) | N/A | 27.0 ppb (25) | N/A | N/A | 31.0 ppb (24) | 0.68 ppb (8) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 16, 2019, midnight | 31.6 ppb (29) | 10.6 ppb (10) | N/A | 21.0 ppb (19) | N/A | N/A | 37.0 ppb (28) | 0.69 ppb (8) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 15, 2019, 11 p.m. | 29.0 ppb (27) | 9.6 ppb (9) | N/A | 19.0 ppb (18) | N/A | N/A | 42.0 ppb (32) | 0.65 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 15, 2019, 10 p.m. | 27.6 ppb (26) | 10.3 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | 40.0 ppb (31) | 0.71 ppb (8) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 15, 2019, 9 p.m. | 34.2 ppb (32) | 16.0 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | 30.0 ppb (23) | 0.78 ppb (9) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 15, 2019, 8 p.m. | 47.3 ppb (44) | 24.0 ppb (22) | N/A | 23.0 ppb (21) | N/A | N/A | 23.0 ppb (18) | 0.78 ppb (9) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 15, 2019, 7 p.m. | 48.5 ppb (45) | 27.8 ppb (26) | N/A | 21.0 ppb (19) | N/A | N/A | 15.0 ppb (12) | 0.81 ppb (9) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 15, 2019, 6 p.m. | 54.7 ppb (51) | 33.3 ppb (31) | N/A | 21.0 ppb (19) | N/A | N/A | 12.0 ppb (9) | 0.67 ppb (7) | N/A | 11.0 μg/m3 (46) | 51.0 | |
| March 15, 2019, 5 p.m. | 93.8 ppb (92) | 61.1 ppb (58) | N/A | 33.0 ppb (31) | N/A | N/A | 6.0 ppb (5) | 0.84 ppb (9) | N/A | 12.0 μg/m3 (50) | 92.0 | |
| March 15, 2019, 4 p.m. | 88.9 ppb (87) | 60.2 ppb (57) | N/A | 29.0 ppb (27) | N/A | N/A | 5.0 ppb (4) | 0.99 ppb (11) | N/A | 11.0 μg/m3 (46) | 87.0 | |
| March 15, 2019, 3 p.m. | 109.3 ppb (102) | 77.8 ppb (75) | N/A | 32.0 ppb (30) | N/A | N/A | 2.0 ppb (2) | 1.12 ppb (12) | N/A | 19.0 μg/m3 (65) | 102.0 | |
| March 15, 2019, 2 p.m. | 88.7 ppb (87) | 62.7 ppb (59) | N/A | 26.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | 0.9 ppb (10) | N/A | 8.0 μg/m3 (33) | 87.0 | |
| March 15, 2019, 1 p.m. | 47.7 ppb (44) | 23.2 ppb (21) | N/A | 25.0 ppb (23) | N/A | N/A | 1.0 ppb (1) | 0.56 ppb (6) | N/A | 8.0 μg/m3 (33) | 44.0 | |
| March 15, 2019, noon | 32.5 ppb (30) | 11.8 ppb (11) | N/A | 21.0 ppb (19) | N/A | N/A | 1.0 ppb (1) | 0.53 ppb (6) | N/A | 7.0 μg/m3 (29) | 30.0 | |
| March 15, 2019, 11 a.m. | 36.1 ppb (33) | 14.3 ppb (13) | N/A | 22.0 ppb (20) | N/A | N/A | 1.0 ppb (1) | 0.42 ppb (5) | N/A | 5.0 μg/m3 (21) | 33.0 | |
| March 15, 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 15, 2019, 9 a.m. | 14.2 ppb (13) | 1.0 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | 8.0 ppb (6) | 0.3 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 15, 2019, 8 a.m. | 14.6 ppb (14) | 3.3 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | 15.0 ppb (12) | 0.39 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 15, 2019, 7 a.m. | 11.8 ppb (11) | 3.9 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | 20.0 ppb (15) | 0.41 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 15, 2019, 6 a.m. | 28.4 ppb (26) | 14.8 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | 14.0 ppb (11) | 0.51 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 15, 2019, 5 a.m. | 33.0 ppb (31) | 9.3 ppb (9) | N/A | 24.0 ppb (22) | N/A | N/A | 2.0 ppb (2) | 0.68 ppb (8) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 15, 2019, 4 a.m. | 31.6 ppb (29) | 12.7 ppb (12) | N/A | 19.0 ppb (18) | N/A | N/A | 11.0 ppb (8) | 0.57 ppb (6) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| March 15, 2019, 3 a.m. | 21.9 ppb (20) | 7.9 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | 17.0 ppb (13) | 0.48 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 15, 2019, 2 a.m. | 20.9 ppb (19) | 11.1 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | 20.0 ppb (15) | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 15, 2019, 1 a.m. | 19.7 ppb (18) | 10.9 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | 24.0 ppb (18) | 0.61 ppb (7) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 15, 2019, midnight | 17.0 ppb (16) | 9.2 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | 27.0 ppb (21) | 0.6 ppb (7) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 14, 2019, 11 p.m. | 18.2 ppb (17) | 8.6 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | 30.0 ppb (23) | 0.59 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 14, 2019, 10 p.m. | 24.6 ppb (23) | 11.3 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | 32.0 ppb (25) | 0.59 ppb (7) | N/A | 5.0 μg/m3 (21) | 25.0 | |
| March 14, 2019, 9 p.m. | 30.8 ppb (29) | 15.8 ppb (15) | N/A | 15.0 ppb (14) | N/A | N/A | 32.0 ppb (25) | 0.65 ppb (7) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 14, 2019, 8 p.m. | 11.9 ppb (11) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | 39.0 ppb (30) | 0.55 ppb (6) | N/A | 4.0 μg/m3 (17) | 30.0 | |
| March 14, 2019, 7 p.m. | 6.8 ppb (6) | 1.9 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 41.0 ppb (32) | 0.48 ppb (5) | N/A | 2.0 μg/m3 (8) | 32.0 | |
| March 14, 2019, 6 p.m. | 8.3 ppb (8) | 2.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | 39.0 ppb (30) | 0.37 ppb (4) | N/A | 3.0 μg/m3 (12) | 30.0 | |
| March 14, 2019, 5 p.m. | 13.6 ppb (13) | 4.4 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | 35.0 ppb (27) | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 27.0 | |
| March 14, 2019, 4 p.m. | 11.2 ppb (10) | 2.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | 34.0 ppb (26) | 0.53 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 14, 2019, 3 p.m. | 25.1 ppb (23) | 5.7 ppb (5) | N/A | 19.0 ppb (18) | N/A | N/A | 23.0 ppb (18) | 0.47 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 14, 2019, 2 p.m. | 32.2 ppb (30) | 5.9 ppb (5) | N/A | 26.0 ppb (24) | N/A | N/A | 16.0 ppb (12) | 0.36 ppb (4) | N/A | 7.0 μg/m3 (29) | 30.0 | |
| March 14, 2019, 1 p.m. | 17.0 ppb (16) | 3.4 ppb (3) | N/A | 14.0 ppb (13) | N/A | N/A | 29.0 ppb (22) | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 22.0 | |
| March 14, 2019, noon | 26.6 ppb (25) | 5.9 ppb (5) | N/A | 21.0 ppb (19) | N/A | N/A | 15.0 ppb (12) | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| March 14, 2019, 11 a.m. | 17.6 ppb (16) | 2.3 ppb (2) | N/A | 15.0 ppb (14) | N/A | N/A | 16.0 ppb (12) | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 14, 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 14, 2019, 9 a.m. | 20.7 ppb (19) | 4.1 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | 15.0 ppb (12) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 14, 2019, 8 a.m. | 23.6 ppb (22) | 7.9 ppb (7) | N/A | 16.0 ppb (15) | N/A | N/A | 17.0 ppb (13) | 0.43 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 14, 2019, 7 a.m. | 28.1 ppb (26) | 7.8 ppb (7) | N/A | 20.0 ppb (19) | N/A | N/A | 15.0 ppb (12) | 0.48 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 14, 2019, 6 a.m. | 24.0 ppb (22) | 8.5 ppb (8) | N/A | 16.0 ppb (15) | N/A | N/A | 20.0 ppb (15) | 0.51 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 14, 2019, 5 a.m. | 20.7 ppb (19) | 4.6 ppb (4) | N/A | 16.0 ppb (15) | N/A | N/A | 20.0 ppb (15) | 0.41 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 14, 2019, 4 a.m. | 13.0 ppb (12) | 2.6 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | 26.0 ppb (20) | 0.38 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 14, 2019, 3 a.m. | 23.8 ppb (22) | 8.9 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | 23.0 ppb (18) | 0.54 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 14, 2019, 2 a.m. | 33.1 ppb (31) | 14.8 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | 21.0 ppb (16) | 0.71 ppb (8) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 14, 2019, 1 a.m. | 29.6 ppb (27) | 13.0 ppb (12) | N/A | 17.0 ppb (16) | N/A | N/A | 25.0 ppb (19) | 0.68 ppb (8) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| March 14, 2019, midnight | 20.3 ppb (19) | 7.9 ppb (7) | N/A | 12.0 ppb (11) | N/A | N/A | 36.0 ppb (28) | 0.53 ppb (6) | N/A | 2.0 μg/m3 (8) | 28.0 | |
| March 13, 2019, 11 p.m. | 13.0 ppb (12) | 4.5 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | 41.0 ppb (32) | 0.48 ppb (5) | N/A | 2.0 μg/m3 (8) | 32.0 | |
| March 13, 2019, 10 p.m. | 20.6 ppb (19) | 8.2 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | 39.0 ppb (30) | 0.59 ppb (7) | N/A | 5.0 μg/m3 (21) | 30.0 | |
| March 13, 2019, 9 p.m. | 33.1 ppb (31) | 16.2 ppb (15) | N/A | 17.0 ppb (16) | N/A | N/A | 33.0 ppb (25) | 0.68 ppb (8) | N/A | 4.0 μg/m3 (17) | 31.0 | |
| March 13, 2019, 8 p.m. | 28.4 ppb (26) | 13.3 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | 33.0 ppb (25) | 0.64 ppb (7) | N/A | 2.0 μg/m3 (8) | 26.0 | |
| March 13, 2019, 7 p.m. | 33.7 ppb (31) | 16.2 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | 29.0 ppb (22) | 0.65 ppb (7) | N/A | 3.0 μg/m3 (12) | 31.0 | |
| March 13, 2019, 6 p.m. | 40.6 ppb (38) | 19.6 ppb (18) | N/A | 21.0 ppb (19) | N/A | N/A | 25.0 ppb (19) | 0.52 ppb (6) | N/A | 5.0 μg/m3 (21) | 38.0 | |
| March 13, 2019, 5 p.m. | 48.2 ppb (45) | 26.0 ppb (24) | N/A | 22.0 ppb (20) | N/A | N/A | 20.0 ppb (15) | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 45.0 | |
| March 13, 2019, 4 p.m. | 43.4 ppb (40) | 22.0 ppb (20) | N/A | 21.0 ppb (19) | N/A | N/A | 18.0 ppb (14) | 0.67 ppb (7) | N/A | 8.0 μg/m3 (33) | 40.0 | |
| March 13, 2019, 3 p.m. | 37.5 ppb (35) | 16.8 ppb (16) | N/A | 21.0 ppb (19) | N/A | N/A | 16.0 ppb (12) | 0.48 ppb (5) | N/A | 8.0 μg/m3 (33) | 35.0 | |
| March 13, 2019, 2 p.m. | 27.1 ppb (25) | 6.6 ppb (6) | N/A | 21.0 ppb (19) | N/A | N/A | 17.0 ppb (13) | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 25.0 | |
| March 13, 2019, 1 p.m. | 49.9 ppb (46) | 20.6 ppb (19) | N/A | 29.0 ppb (27) | N/A | N/A | 12.0 ppb (9) | 0.44 ppb (5) | N/A | 5.0 μg/m3 (21) | 46.0 | |
| March 13, 2019, noon | 47.8 ppb (44) | 20.8 ppb (19) | N/A | 27.0 ppb (25) | N/A | N/A | 12.0 ppb (9) | 0.46 ppb (5) | N/A | 4.0 μg/m3 (17) | 44.0 | |
| March 13, 2019, 11 a.m. | 19.0 ppb (18) | 5.9 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | 23.0 ppb (18) | 0.18 ppb (2) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| March 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 13, 2019, 9 a.m. | 12.1 ppb (11) | 2.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | 28.0 ppb (22) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 22.0 | |
| March 13, 2019, 8 a.m. | 7.0 ppb (6) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 32.0 ppb (25) | 0.19 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 13, 2019, 7 a.m. | 12.8 ppb (12) | 3.3 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | 30.0 ppb (23) | 0.28 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 13, 2019, 6 a.m. | 14.5 ppb (13) | 4.9 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | 31.0 ppb (24) | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 13, 2019, 5 a.m. | 14.9 ppb (14) | 5.4 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | 31.0 ppb (24) | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 13, 2019, 4 a.m. | 13.6 ppb (13) | 5.0 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | 33.0 ppb (25) | 0.35 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 13, 2019, 3 a.m. | 18.9 ppb (18) | 8.6 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | 30.0 ppb (23) | 0.45 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 13, 2019, 2 a.m. | 18.1 ppb (17) | 8.5 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | 32.0 ppb (25) | 0.43 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 13, 2019, 1 a.m. | 13.1 ppb (12) | 7.0 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | 36.0 ppb (28) | 0.48 ppb (5) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 13, 2019, midnight | 14.5 ppb (13) | 7.0 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | 37.0 ppb (28) | 0.56 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 12, 2019, 11 p.m. | 16.8 ppb (16) | 8.8 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | 36.0 ppb (28) | 0.61 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 12, 2019, 10 p.m. | 15.0 ppb (14) | 8.2 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | 37.0 ppb (28) | 0.62 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 12, 2019, 9 p.m. | 20.2 ppb (19) | 11.3 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | 36.0 ppb (28) | 0.57 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 12, 2019, 8 p.m. | 20.6 ppb (19) | 11.2 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | 33.0 ppb (25) | 0.57 ppb (6) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| March 12, 2019, 7 p.m. | 25.6 ppb (24) | 13.4 ppb (12) | N/A | 12.0 ppb (11) | N/A | N/A | 30.0 ppb (23) | 0.67 ppb (7) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 12, 2019, 6 p.m. | 35.4 ppb (33) | 19.1 ppb (18) | N/A | 16.0 ppb (15) | N/A | N/A | 26.0 ppb (20) | 0.55 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 12, 2019, 5 p.m. | 68.4 ppb (65) | 37.9 ppb (35) | N/A | 31.0 ppb (29) | N/A | N/A | 11.0 ppb (8) | 0.64 ppb (7) | N/A | N/A | 65.0 | |
| March 12, 2019, 4 p.m. | 58.8 ppb (55) | 33.0 ppb (31) | N/A | 26.0 ppb (24) | N/A | N/A | 13.0 ppb (10) | 0.76 ppb (8) | N/A | 12.0 μg/m3 (50) | 55.0 | |
| March 12, 2019, 3 p.m. | 59.7 ppb (56) | 34.1 ppb (32) | N/A | 26.0 ppb (24) | N/A | N/A | 5.0 ppb (4) | 0.89 ppb (10) | N/A | 8.0 μg/m3 (33) | 56.0 | |
| March 12, 2019, 2 p.m. | 54.6 ppb (51) | 26.7 ppb (25) | N/A | 28.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | 0.57 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 12, 2019, 1 p.m. | 31.2 ppb (29) | 9.2 ppb (9) | N/A | 22.0 ppb (20) | N/A | N/A | 4.0 ppb (3) | 0.41 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 12, 2019, noon | 22.8 ppb (21) | 3.2 ppb (3) | N/A | 20.0 ppb (19) | N/A | N/A | 6.0 ppb (5) | 0.32 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 12, 2019, 11 a.m. | 18.7 ppb (17) | 1.5 ppb (1) | N/A | 17.0 ppb (16) | N/A | N/A | 7.0 ppb (5) | 0.35 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 12, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 12, 2019, 9 a.m. | 40.2 ppb (37) | 16.3 ppb (15) | N/A | 24.0 ppb (22) | N/A | N/A | 1.0 ppb (1) | 0.58 ppb (6) | N/A | 8.0 μg/m3 (33) | 37.0 | |
| March 12, 2019, 8 a.m. | 46.0 ppb (43) | 21.5 ppb (20) | N/A | 25.0 ppb (23) | N/A | N/A | 0.0 ppb (0) | 0.64 ppb (7) | N/A | 7.0 μg/m3 (29) | 43.0 | |
| March 12, 2019, 7 a.m. | 45.5 ppb (42) | 19.1 ppb (18) | N/A | 26.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | 0.59 ppb (7) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 12, 2019, 6 a.m. | 46.5 ppb (43) | 19.0 ppb (18) | N/A | 28.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | 0.69 ppb (8) | N/A | 7.0 μg/m3 (29) | 43.0 | |
| March 12, 2019, 5 a.m. | 33.4 ppb (31) | 6.6 ppb (6) | N/A | 27.0 ppb (25) | N/A | N/A | 5.0 ppb (4) | 0.6 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 |