Detroit (Schoolcraft St) MI, US: 42.38599, -83.266319
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 28, 2020, 3 p.m. | 11.6 ppb (11) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| March 28, 2020, 2 p.m. | 8.7 ppb (8) | 1.8 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 1 p.m. | 7.5 ppb (7) | 0.6 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 28, 2020, noon | 8.0 ppb (7) | 0.6 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| March 28, 2020, 11 a.m. | 8.4 ppb (8) | 1.1 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 10 a.m. | 7.0 ppb (6) | 0.5 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 9 a.m. | 6.6 ppb (6) | 0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 28, 2020, 8 a.m. | 6.8 ppb (6) | 0.4 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 28, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 6 a.m. | 6.9 ppb (6) | 0.4 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 28, 2020, 5 a.m. | 8.3 ppb (8) | 0.5 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 12.9 μg/m3 (52) | 52.0 | |
| March 28, 2020, 4 a.m. | 11.8 ppb (11) | 2.3 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 28, 2020, 3 a.m. | 14.6 ppb (14) | 2.7 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 16.8 μg/m3 (60) | 60.0 | |
| March 28, 2020, 2 a.m. | 18.1 ppb (17) | 4.0 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 13.1 μg/m3 (52) | 52.0 | |
| March 28, 2020, 1 a.m. | 16.5 ppb (15) | 3.1 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 11.1 μg/m3 (46) | 46.0 | |
| March 28, 2020, midnight | 18.6 ppb (17) | 5.1 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| March 27, 2020, 11 p.m. | 21.5 ppb (20) | 7.8 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 27, 2020, 10 p.m. | 21.8 ppb (20) | 8.6 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 27, 2020, 9 p.m. | 26.4 ppb (24) | 12.2 ppb (11) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 27, 2020, 8 p.m. | 31.3 ppb (29) | 17.5 ppb (16) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 27, 2020, 7 p.m. | 38.9 ppb (36) | 21.7 ppb (20) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 27, 2020, 6 p.m. | 36.5 ppb (34) | 21.3 ppb (20) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 27, 2020, 5 p.m. | 23.0 ppb (21) | 10.6 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 27, 2020, 4 p.m. | 32.4 ppb (30) | 17.4 ppb (16) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 27, 2020, 3 p.m. | 18.8 ppb (17) | 8.5 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 11.1 μg/m3 (46) | 46.0 | |
| March 27, 2020, 2 p.m. | 22.8 ppb (21) | 10.7 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 16.8 μg/m3 (60) | 60.0 | |
| March 27, 2020, 1 p.m. | 11.6 ppb (11) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.2 μg/m3 (42) | 42.0 | |
| March 27, 2020, noon | 11.8 ppb (11) | 2.9 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.1 μg/m3 (34) | 34.0 | |
| March 27, 2020, 11 a.m. | 8.2 ppb (8) | 1.5 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 27, 2020, 10 a.m. | 7.0 ppb (6) | 0.8 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 27, 2020, 9 a.m. | 7.5 ppb (7) | 1.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 27, 2020, 8 a.m. | 5.0 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 6 a.m. | 4.5 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 5 a.m. | 4.8 ppb (4) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| March 27, 2020, 4 a.m. | 5.5 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 27, 2020, 3 a.m. | 5.4 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 27, 2020, 2 a.m. | 7.7 ppb (7) | 0.4 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 27, 2020, 1 a.m. | 10.2 ppb (9) | 2.2 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| March 27, 2020, midnight | 8.0 ppb (7) | 1.2 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| March 26, 2020, 11 p.m. | 12.6 ppb (12) | 2.7 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 26, 2020, 10 p.m. | 16.5 ppb (15) | 5.4 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 13.1 μg/m3 (52) | 52.0 | |
| March 26, 2020, 9 p.m. | 15.2 ppb (14) | 6.1 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 26, 2020, 8 p.m. | 21.9 ppb (20) | 10.6 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 14.1 μg/m3 (54) | 54.0 | |
| March 26, 2020, 7 p.m. | 27.4 ppb (25) | 15.3 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 26, 2020, 6 p.m. | 9.1 ppb (8) | 4.2 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 26, 2020, 5 p.m. | 22.1 ppb (20) | 10.5 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 26, 2020, 4 p.m. | 23.8 ppb (22) | 11.6 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| March 26, 2020, 3 p.m. | 29.7 ppb (28) | 16.4 ppb (15) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 26, 2020, 2 p.m. | 45.5 ppb (42) | 29.3 ppb (27) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 26, 2020, 1 p.m. | 51.3 ppb (48) | 31.1 ppb (29) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 26, 2020, noon | 56.5 ppb (53) | 32.2 ppb (30) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.1 μg/m3 (57) | 57.0 | |
| March 26, 2020, 11 a.m. | 64.7 ppb (61) | 38.7 ppb (36) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 20.8 μg/m3 (69) | 69.0 | |
| March 26, 2020, 10 a.m. | 71.3 ppb (68) | 43.3 ppb (40) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.8 ppb (9) | N/A | 22.0 μg/m3 (71) | 71.0 | |
| March 26, 2020, 9 a.m. | 48.7 ppb (45) | 24.8 ppb (23) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 19.1 μg/m3 (65) | 65.0 | |
| March 26, 2020, 8 a.m. | 38.6 ppb (36) | 16.8 ppb (16) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| March 26, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 26, 2020, 6 a.m. | 18.1 ppb (17) | 4.4 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 20.9 μg/m3 (69) | 69.0 | |
| March 26, 2020, 5 a.m. | 20.8 ppb (19) | 4.1 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (67) | 67.0 | |
| March 26, 2020, 4 a.m. | 25.3 ppb (23) | 6.3 ppb (6) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 25.8 μg/m3 (79) | 79.0 | |
| March 26, 2020, 3 a.m. | 34.0 ppb (31) | 9.7 ppb (9) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 25.0 μg/m3 (78) | 78.0 | |
| March 26, 2020, 2 a.m. | 34.1 ppb (32) | 10.6 ppb (10) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 25.0 μg/m3 (78) | 78.0 | |
| March 26, 2020, 1 a.m. | 26.1 ppb (24) | 8.2 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 21.1 μg/m3 (69) | 69.0 | |
| March 26, 2020, midnight | 37.4 ppb (35) | 14.1 ppb (13) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 12.2 μg/m3 (50) | 50.0 | |
| March 25, 2020, 11 p.m. | 22.5 ppb (21) | 9.0 ppb (8) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 9.1 μg/m3 (38) | 38.0 | |
| March 25, 2020, 10 p.m. | 26.4 ppb (24) | 12.8 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| March 25, 2020, 9 p.m. | 28.6 ppb (26) | 14.6 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 25, 2020, 8 p.m. | 31.6 ppb (29) | 15.9 ppb (15) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 12.1 μg/m3 (50) | 50.0 | |
| March 25, 2020, 7 p.m. | 37.0 ppb (34) | 20.4 ppb (19) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 16.9 μg/m3 (60) | 60.0 | |
| March 25, 2020, 6 p.m. | 37.7 ppb (35) | 21.3 ppb (20) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 25, 2020, 5 p.m. | 42.3 ppb (39) | 23.8 ppb (22) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 15.1 μg/m3 (57) | 57.0 | |
| March 25, 2020, 4 p.m. | 46.6 ppb (43) | 28.9 ppb (27) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 12.1 μg/m3 (50) | 50.0 | |
| March 25, 2020, 3 p.m. | 23.4 ppb (22) | 11.9 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 19.8 μg/m3 (67) | 67.0 | |
| March 25, 2020, 2 p.m. | 37.1 ppb (34) | 20.6 ppb (19) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 21.9 μg/m3 (71) | 71.0 | |
| March 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 11.3 μg/m3 (47) | 47.0 | |
| March 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 25, 2020, 10 a.m. | 30.0 ppb (28) | 13.6 ppb (13) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.2 μg/m3 (42) | 42.0 | |
| March 25, 2020, 9 a.m. | 17.6 ppb (16) | 6.4 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 25, 2020, 8 a.m. | 14.2 ppb (13) | 3.0 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.1 μg/m3 (30) | 30.0 | |
| March 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 25, 2020, 6 a.m. | 9.3 ppb (9) | 0.5 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.9 μg/m3 (37) | 37.0 | |
| March 25, 2020, 5 a.m. | 8.6 ppb (8) | -0.1 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 25, 2020, 4 a.m. | 10.7 ppb (10) | 0.1 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 25, 2020, 3 a.m. | 11.5 ppb (11) | 0.8 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 25, 2020, 2 a.m. | 14.1 ppb (13) | 2.2 ppb (2) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| March 25, 2020, 1 a.m. | 14.8 ppb (14) | 3.6 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 25, 2020, midnight | 19.5 ppb (18) | 5.2 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 24, 2020, 11 p.m. | 18.0 ppb (17) | 5.3 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| March 24, 2020, 10 p.m. | 15.3 ppb (14) | 4.9 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 15.1 μg/m3 (57) | 57.0 | |
| March 24, 2020, 9 p.m. | 19.6 ppb (18) | 7.7 ppb (7) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.3 μg/m3 (18) | 18.0 | |
| March 24, 2020, 8 p.m. | 22.4 ppb (21) | 10.2 ppb (9) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 12.8 μg/m3 (52) | 52.0 | |
| March 24, 2020, 7 p.m. | 28.1 ppb (26) | 12.9 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 17.9 μg/m3 (63) | 63.0 | |
| March 24, 2020, 6 p.m. | 46.9 ppb (43) | 24.1 ppb (22) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | N/A | 43.0 | |
| March 24, 2020, 5 p.m. | 53.0 ppb (49) | 29.4 ppb (27) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | N/A | 49.0 | |
| March 24, 2020, 4 p.m. | 60.5 ppb (57) | 36.1 ppb (33) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 57.0 | |
| March 24, 2020, 3 p.m. | 49.2 ppb (46) | 28.9 ppb (27) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 46.0 | |
| March 24, 2020, 2 p.m. | 58.8 ppb (55) | 33.3 ppb (31) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 55.0 | |
| March 24, 2020, 1 p.m. | 44.7 ppb (41) | 23.6 ppb (22) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 41.0 | |
| March 24, 2020, noon | 81.7 ppb (79) | 49.9 ppb (46) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | N/A | 79.0 | |
| March 24, 2020, 11 a.m. | 30.1 ppb (28) | 14.0 ppb (13) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 28.0 | |
| March 24, 2020, 10 a.m. | 30.1 ppb (28) | 13.2 ppb (12) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 28.0 | |
| March 24, 2020, 9 a.m. | 13.7 ppb (13) | 3.2 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 13.0 | |
| March 24, 2020, 8 a.m. | 21.4 ppb (20) | 7.5 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 20.0 | |
| March 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 4.0 | |
| March 24, 2020, 6 a.m. | 3.3 ppb (3) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 4.0 | |
| March 24, 2020, 5 a.m. | 5.7 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 24, 2020, 4 a.m. | 4.6 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 4.0 | |
| March 24, 2020, 3 a.m. | 10.4 ppb (10) | 2.9 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 10.0 | |
| March 24, 2020, 2 a.m. | 13.1 ppb (12) | 4.3 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 12.0 | |
| March 24, 2020, 1 a.m. | 12.7 ppb (12) | 4.8 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 36.2 μg/m3 (102) | 102.0 | |
| March 24, 2020, midnight | 7.5 ppb (7) | 1.9 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 14.9 μg/m3 (56) | 56.0 | |
| March 23, 2020, 11 p.m. | 4.9 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 23, 2020, 10 p.m. | 4.3 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| March 23, 2020, 9 p.m. | 8.7 ppb (8) | 3.1 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 23, 2020, 8 p.m. | 13.5 ppb (12) | 5.5 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 23, 2020, 7 p.m. | 10.7 ppb (10) | 4.6 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 23, 2020, 6 p.m. | 9.4 ppb (9) | 3.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| March 23, 2020, 5 p.m. | 13.9 ppb (13) | 4.4 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| March 23, 2020, 4 p.m. | 31.3 ppb (29) | 16.5 ppb (15) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 23, 2020, 3 p.m. | 38.7 ppb (36) | 20.6 ppb (19) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 20.8 μg/m3 (69) | 69.0 | |
| March 23, 2020, 2 p.m. | 36.9 ppb (34) | 18.6 ppb (17) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 13.2 μg/m3 (53) | 53.0 | |
| March 23, 2020, 1 p.m. | 28.2 ppb (26) | 11.8 ppb (11) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 16.9 μg/m3 (60) | 60.0 | |
| March 23, 2020, noon | 16.3 ppb (15) | 5.3 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 9.2 μg/m3 (38) | 38.0 | |
| March 23, 2020, 11 a.m. | 10.8 ppb (10) | 1.8 ppb (2) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| March 23, 2020, 10 a.m. | 8.1 ppb (8) | 0.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.1 μg/m3 (38) | 38.0 | |
| March 23, 2020, 9 a.m. | 8.6 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 23, 2020, 8 a.m. | 7.1 ppb (7) | -0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 23, 2020, 6 a.m. | 12.7 ppb (12) | 1.6 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| March 23, 2020, 5 a.m. | 15.2 ppb (14) | 2.8 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 23, 2020, 4 a.m. | 10.0 ppb (9) | 0.4 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 23, 2020, 3 a.m. | 9.2 ppb (9) | 0.7 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 23, 2020, 2 a.m. | 14.5 ppb (13) | 2.9 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 1 a.m. | 12.9 ppb (12) | 3.6 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 23, 2020, midnight | 12.5 ppb (12) | 3.4 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 11 p.m. | 7.6 ppb (7) | 1.4 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 10 p.m. | 14.8 ppb (14) | 5.0 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.1 μg/m3 (17) | 17.0 | |
| March 22, 2020, 9 p.m. | 13.0 ppb (12) | 4.7 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 22, 2020, 8 p.m. | 11.4 ppb (11) | 4.7 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| March 22, 2020, 7 p.m. | 11.9 ppb (11) | 5.1 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 22, 2020, 6 p.m. | 11.4 ppb (11) | 5.7 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| March 22, 2020, 5 p.m. | 11.4 ppb (11) | 4.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 10.1 μg/m3 (42) | 42.0 | |
| March 22, 2020, 4 p.m. | 10.5 ppb (10) | 4.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.1 μg/m3 (30) | 30.0 | |
| March 22, 2020, 3 p.m. | 11.6 ppb (11) | 5.6 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 22, 2020, 2 p.m. | 17.3 ppb (16) | 7.2 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 22, 2020, 1 p.m. | 28.5 ppb (26) | 13.0 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, noon | 24.2 ppb (22) | 4.9 ppb (5) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 22, 2020, 11 a.m. | 22.7 ppb (21) | 2.2 ppb (2) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| March 22, 2020, 10 a.m. | 19.2 ppb (18) | 0.6 ppb (1) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 9 a.m. | 16.4 ppb (15) | 0.9 ppb (1) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 8 a.m. | 12.5 ppb (12) | 0.1 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 22, 2020, 6 a.m. | 10.3 ppb (10) | -0.1 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2020, 5 a.m. | 8.8 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 10.9 μg/m3 (45) | 45.0 | |
| March 22, 2020, 4 a.m. | 9.4 ppb (9) | 0.3 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 22, 2020, 3 a.m. | 10.0 ppb (9) | 2.4 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 22, 2020, 2 a.m. | 5.3 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 22, 2020, 1 a.m. | 7.2 ppb (7) | 1.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 22, 2020, midnight | 14.1 ppb (13) | 3.8 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 6.1 μg/m3 (25) | 25.0 | |
| March 21, 2020, 11 p.m. | 6.0 ppb (6) | 1.2 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 21, 2020, 10 p.m. | 5.5 ppb (5) | 1.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| March 21, 2020, 9 p.m. | 8.9 ppb (8) | 4.1 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 21, 2020, 8 p.m. | 7.6 ppb (7) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 21, 2020, 7 p.m. | 6.9 ppb (6) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 21, 2020, 6 p.m. | 4.7 ppb (4) | 1.8 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| March 21, 2020, 5 p.m. | 9.2 ppb (9) | 4.9 ppb (5) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| March 21, 2020, 4 p.m. | 6.8 ppb (6) | 3.1 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 4.9 μg/m3 (20) | 20.0 |