Laurel (I 95) MD, US: 39.143197, -76.846192
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 10, 2020, 1 a.m. | 4.4 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 10, 2020, midnight | 7.7 ppb (7) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.11 ppb (1) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 9, 2020, 11 p.m. | 5.5 ppb (5) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 9, 2020, 10 p.m. | 3.5 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| April 9, 2020, 9 p.m. | 3.3 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 9, 2020, 8 p.m. | 2.8 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 9, 2020, 7 p.m. | 3.3 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 9, 2020, 6 p.m. | 3.3 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.09 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 9, 2020, 5 p.m. | 2.5 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 9, 2020, 4 p.m. | 5.7 ppb (5) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 9, 2020, 3 p.m. | 22.6 ppb (21) | 11.4 ppb (11) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 9, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 9, 2020, 1 p.m. | 54.0 ppb (50) | 31.5 ppb (29) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| April 9, 2020, noon | 59.7 ppb (56) | 33.6 ppb (31) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| April 9, 2020, 11 a.m. | 51.2 ppb (47) | 26.5 ppb (25) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| April 9, 2020, 10 a.m. | 28.3 ppb (26) | 11.1 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| April 9, 2020, 9 a.m. | 42.8 ppb (40) | 17.3 ppb (16) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| April 9, 2020, 8 a.m. | 39.6 ppb (37) | 14.8 ppb (14) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| April 9, 2020, 7 a.m. | 46.5 ppb (43) | 19.3 ppb (18) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| April 9, 2020, 6 a.m. | 39.7 ppb (37) | 14.3 ppb (13) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| April 9, 2020, 5 a.m. | 39.9 ppb (37) | 15.5 ppb (14) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 8.0 μg/m3 (33) | 37.0 | |
| April 9, 2020, 4 a.m. | 28.3 ppb (26) | 11.1 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 9, 2020, 3 a.m. | 32.6 ppb (30) | 12.6 ppb (12) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 30.0 | |
| April 9, 2020, 2 a.m. | 35.6 ppb (33) | 16.3 ppb (15) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 5.0 μg/m3 (21) | 33.0 | |
| April 9, 2020, 1 a.m. | 20.1 ppb (19) | 9.5 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 9, 2020, midnight | 20.1 ppb (19) | 8.3 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| April 8, 2020, 11 p.m. | 12.4 ppb (11) | 2.7 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 8, 2020, 10 p.m. | 5.9 ppb (5) | 1.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 8, 2020, 9 p.m. | 3.5 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 8, 2020, 8 p.m. | 5.5 ppb (5) | 1.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 8, 2020, 7 p.m. | 2.8 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 8, 2020, 6 p.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 8, 2020, 5 p.m. | 3.5 ppb (3) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| April 8, 2020, 4 p.m. | 2.9 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 8, 2020, 3 p.m. | 5.2 ppb (5) | 1.7 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| April 8, 2020, 2 p.m. | 12.3 ppb (11) | 5.4 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 0.0 μg/m3 (0) | 11.0 | |
| April 8, 2020, 1 p.m. | 23.2 ppb (21) | 9.9 ppb (9) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 21.0 | |
| April 8, 2020, noon | 29.4 ppb (27) | 12.9 ppb (12) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 27.0 | |
| April 8, 2020, 11 a.m. | 36.3 ppb (34) | 16.8 ppb (16) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 3.0 μg/m3 (12) | 34.0 | |
| April 8, 2020, 10 a.m. | 42.6 ppb (39) | 19.8 ppb (18) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 39.0 | |
| April 8, 2020, 9 a.m. | 31.8 ppb (29) | 12.2 ppb (11) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 29.0 | |
| April 8, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 8, 2020, 7 a.m. | 51.4 ppb (48) | 31.7 ppb (29) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| April 8, 2020, 6 a.m. | 38.8 ppb (36) | 16.4 ppb (15) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| April 8, 2020, 5 a.m. | 40.3 ppb (37) | 17.0 ppb (16) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 8, 2020, 4 a.m. | 43.3 ppb (40) | 17.7 ppb (16) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 8, 2020, 3 a.m. | 41.4 ppb (38) | 16.8 ppb (16) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 8.0 μg/m3 (33) | 38.0 | |
| April 8, 2020, 2 a.m. | 58.2 ppb (54) | 29.1 ppb (27) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 8.0 μg/m3 (33) | 54.0 | |
| April 8, 2020, 1 a.m. | 41.0 ppb (38) | 15.5 ppb (14) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| April 8, 2020, midnight | 48.2 ppb (45) | 18.1 ppb (17) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 7.0 μg/m3 (29) | 45.0 | |
| April 7, 2020, 11 p.m. | 43.9 ppb (41) | 17.7 ppb (16) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 9.0 μg/m3 (38) | 41.0 | |
| April 7, 2020, 10 p.m. | 35.1 ppb (32) | 13.8 ppb (13) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 32.0 | |
| April 7, 2020, 9 p.m. | 37.6 ppb (35) | 16.3 ppb (15) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 35.0 | |
| April 7, 2020, 8 p.m. | 49.5 ppb (46) | 23.2 ppb (21) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 9.0 μg/m3 (38) | 46.0 | |
| April 7, 2020, 7 p.m. | 10.4 ppb (10) | 3.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 7, 2020, 6 p.m. | 4.4 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 7, 2020, 5 p.m. | 5.7 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 7, 2020, 4 p.m. | 10.6 ppb (10) | 3.7 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 7, 2020, 3 p.m. | 25.8 ppb (24) | 11.2 ppb (10) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 7, 2020, 2 p.m. | 58.3 ppb (55) | 33.7 ppb (31) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 14.0 μg/m3 (54) | 55.0 | |
| April 7, 2020, 1 p.m. | 70.9 ppb (68) | 43.0 ppb (40) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 13.0 μg/m3 (52) | 68.0 | |
| April 7, 2020, noon | 87.8 ppb (86) | 51.6 ppb (48) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 13.0 μg/m3 (52) | 86.0 | |
| April 7, 2020, 11 a.m. | 91.8 ppb (90) | 54.1 ppb (50) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 13.0 μg/m3 (52) | 90.0 | |
| April 7, 2020, 10 a.m. | 94.9 ppb (94) | 57.7 ppb (54) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 17.0 μg/m3 (61) | 94.0 | |
| April 7, 2020, 9 a.m. | 77.0 ppb (74) | 41.4 ppb (38) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 12.0 μg/m3 (50) | 74.0 | |
| April 7, 2020, 8 a.m. | 80.1 ppb (78) | 40.2 ppb (37) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 10.0 μg/m3 (42) | 78.0 | |
| April 7, 2020, 7 a.m. | 87.8 ppb (86) | 47.6 ppb (44) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (33) | 86.0 | |
| April 7, 2020, 6 a.m. | 55.7 ppb (52) | 32.7 ppb (30) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 8.0 μg/m3 (33) | 52.0 | |
| April 7, 2020, 5 a.m. | 33.9 ppb (31) | 15.9 ppb (15) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| April 7, 2020, 4 a.m. | 26.7 ppb (25) | 8.5 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2020, 3 a.m. | 24.4 ppb (23) | 6.8 ppb (6) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 7, 2020, 2 a.m. | 19.1 ppb (18) | 6.8 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 7, 2020, 1 a.m. | 29.4 ppb (27) | 13.0 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| April 7, 2020, midnight | 20.6 ppb (19) | 9.4 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, 11 p.m. | 14.2 ppb (13) | 3.1 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, 10 p.m. | 10.4 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 10.0 | |
| April 6, 2020, 9 p.m. | 8.2 ppb (8) | 2.5 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 6, 2020, 8 p.m. | 8.7 ppb (8) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 8.0 | |
| April 6, 2020, 7 p.m. | 6.2 ppb (6) | 2.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 6.0 | |
| April 6, 2020, 6 p.m. | 5.9 ppb (5) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| April 6, 2020, 5 p.m. | 6.1 ppb (6) | 2.7 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 6, 2020, 4 p.m. | 6.4 ppb (6) | 2.6 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 6, 2020, 3 p.m. | 7.5 ppb (7) | 3.6 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 6, 2020, 2 p.m. | 8.9 ppb (8) | 4.2 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, 1 p.m. | 7.9 ppb (7) | 3.6 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, noon | 9.2 ppb (9) | 4.1 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 6, 2020, 11 a.m. | 27.3 ppb (25) | 11.5 ppb (11) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 6, 2020, 10 a.m. | 38.6 ppb (36) | 15.6 ppb (14) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 6, 2020, 9 a.m. | 17.0 ppb (16) | 7.3 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 6, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 6, 2020, 7 a.m. | 9.7 ppb (9) | 2.5 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, 6 a.m. | 9.6 ppb (9) | 2.2 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 6, 2020, 5 a.m. | 21.7 ppb (20) | 6.1 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 6, 2020, 4 a.m. | 29.6 ppb (27) | 10.6 ppb (10) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 27.0 | |
| April 6, 2020, 3 a.m. | 31.4 ppb (29) | 10.1 ppb (9) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 29.0 | |
| April 6, 2020, 2 a.m. | 26.5 ppb (25) | 5.8 ppb (5) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| April 6, 2020, 1 a.m. | 29.6 ppb (27) | 11.8 ppb (11) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 5.0 μg/m3 (21) | 27.0 | |
| April 6, 2020, midnight | 22.2 ppb (21) | 8.8 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2020, 11 p.m. | 23.4 ppb (22) | 10.5 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 5, 2020, 10 p.m. | 22.3 ppb (21) | 6.9 ppb (6) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2020, 9 p.m. | 15.3 ppb (14) | 6.0 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| April 5, 2020, 8 p.m. | 12.6 ppb (12) | 5.5 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 1.0 μg/m3 (4) | 12.0 | |
| April 5, 2020, 7 p.m. | 10.8 ppb (10) | 4.6 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 0.0 μg/m3 (0) | 10.0 | |
| April 5, 2020, 6 p.m. | 11.3 ppb (10) | 4.8 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 5, 2020, 5 p.m. | 12.0 ppb (11) | 5.1 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 5, 2020, 4 p.m. | 12.7 ppb (12) | 6.7 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| April 5, 2020, 3 p.m. | 14.5 ppb (13) | 7.3 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 5, 2020, 2 p.m. | 15.3 ppb (14) | 7.6 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 5, 2020, 1 p.m. | 21.8 ppb (20) | 11.1 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 5, 2020, noon | 19.2 ppb (18) | 7.7 ppb (7) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 5, 2020, 11 a.m. | 36.5 ppb (34) | 17.7 ppb (16) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| April 5, 2020, 10 a.m. | 42.4 ppb (39) | 19.7 ppb (18) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 39.0 | |
| April 5, 2020, 9 a.m. | 42.8 ppb (40) | 22.9 ppb (21) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 7.0 μg/m3 (29) | 40.0 | |
| April 5, 2020, 8 a.m. | 23.2 ppb (21) | 8.4 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2020, 7 a.m. | 27.3 ppb (25) | 8.9 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2020, 6 a.m. | 13.6 ppb (13) | 3.2 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| April 5, 2020, 5 a.m. | 22.2 ppb (21) | 7.0 ppb (6) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 5, 2020, 4 a.m. | 22.6 ppb (21) | 7.2 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 5, 2020, 3 a.m. | 24.0 ppb (22) | 8.3 ppb (8) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| April 5, 2020, 2 a.m. | 20.8 ppb (19) | 8.4 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 5, 2020, 1 a.m. | 19.3 ppb (18) | 8.4 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 5, 2020, midnight | 20.1 ppb (19) | 8.4 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.0 μg/m3 (17) | 19.0 | |
| April 4, 2020, 11 p.m. | 21.0 ppb (19) | 9.0 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 19.0 | |
| April 4, 2020, 10 p.m. | 22.8 ppb (21) | 11.2 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| April 4, 2020, 9 p.m. | 13.0 ppb (12) | 5.8 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| April 4, 2020, 8 p.m. | 12.5 ppb (12) | 5.6 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 0.0 μg/m3 (0) | 12.0 | |
| April 4, 2020, 7 p.m. | 10.1 ppb (9) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| April 4, 2020, 6 p.m. | 8.2 ppb (8) | 3.6 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 4, 2020, 5 p.m. | 7.5 ppb (7) | 3.3 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 0.0 μg/m3 (0) | 7.0 | |
| April 4, 2020, 4 p.m. | 8.3 ppb (8) | 4.1 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 1.0 μg/m3 (4) | 8.0 | |
| April 4, 2020, 3 p.m. | 10.9 ppb (10) | 5.1 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | -2.0 μg/m3 (0) | 10.0 | |
| April 4, 2020, 2 p.m. | 5.4 ppb (5) | 2.3 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | -2.0 μg/m3 (0) | 5.0 | |
| April 4, 2020, 1 p.m. | 5.4 ppb (5) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| April 4, 2020, noon | 6.9 ppb (6) | 2.4 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 4, 2020, 11 a.m. | 10.3 ppb (10) | 3.6 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | -1.0 μg/m3 (0) | 10.0 | |
| April 4, 2020, 10 a.m. | 11.3 ppb (10) | 4.0 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 1.0 μg/m3 (4) | 10.0 | |
| April 4, 2020, 9 a.m. | 9.3 ppb (9) | 2.8 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| April 4, 2020, 8 a.m. | 15.0 ppb (14) | 5.1 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 14.0 | |
| April 4, 2020, 7 a.m. | 13.7 ppb (13) | 4.1 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 13.0 | |
| April 4, 2020, 6 a.m. | 12.9 ppb (12) | 3.6 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | -2.0 μg/m3 (0) | 12.0 | |
| April 4, 2020, 5 a.m. | 11.0 ppb (10) | 3.0 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 10.0 | |
| April 4, 2020, 4 a.m. | 7.7 ppb (7) | 2.1 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 7.0 | |
| April 4, 2020, 3 a.m. | 8.2 ppb (8) | 2.3 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | -2.0 μg/m3 (0) | 8.0 | |
| April 4, 2020, 2 a.m. | 5.3 ppb (5) | 1.9 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | -1.0 μg/m3 (0) | 5.0 | |
| April 4, 2020, 1 a.m. | 9.3 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| April 4, 2020, midnight | 5.5 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| April 3, 2020, 11 p.m. | 5.1 ppb (5) | 1.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 3, 2020, 10 p.m. | 5.7 ppb (5) | 1.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 0.0 μg/m3 (0) | 5.0 | |
| April 3, 2020, 9 p.m. | 4.3 ppb (4) | 1.5 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | -1.0 μg/m3 (0) | 4.0 | |
| April 3, 2020, 8 p.m. | 3.1 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 3.0 | |
| April 3, 2020, 7 p.m. | 3.7 ppb (3) | 1.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| April 3, 2020, 6 p.m. | 2.5 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, 5 p.m. | 2.9 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| April 3, 2020, 4 p.m. | 2.6 ppb (2) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 1.0 μg/m3 (4) | 4.0 | |
| April 3, 2020, 3 p.m. | 3.4 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, 2 p.m. | 3.0 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, 1 p.m. | 3.9 ppb (4) | 1.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, noon | 3.2 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.13 ppb (1) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, 11 a.m. | 4.9 ppb (5) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 1.0 μg/m3 (4) | 5.0 | |
| April 3, 2020, 10 a.m. | 4.9 ppb (5) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 5.0 | |
| April 3, 2020, 9 a.m. | 12.8 ppb (12) | 6.5 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 0.0 μg/m3 (0) | 12.0 | |
| April 3, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| April 3, 2020, 7 a.m. | 15.5 ppb (14) | 7.2 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 3, 2020, 6 a.m. | 14.1 ppb (13) | 7.0 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| April 3, 2020, 5 a.m. | 11.4 ppb (11) | 5.0 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 2.0 μg/m3 (8) | 11.0 | |
| April 3, 2020, 4 a.m. | 9.9 ppb (9) | 4.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 0.0 μg/m3 (0) | 9.0 | |
| April 3, 2020, 3 a.m. | 11.9 ppb (11) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| April 3, 2020, 2 a.m. | 6.8 ppb (6) | 2.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | -1.0 μg/m3 (0) | 6.0 |