Decatur (Perimeter) GA, US: 33.698611, -84.272608
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 2, 2020, 6 p.m. | 25.3 ppb (23) | 11.3 ppb (10) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| April 2, 2020, 5 p.m. | 26.5 ppb (25) | 12.9 ppb (12) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| April 2, 2020, 4 p.m. | 17.2 ppb (16) | 8.3 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| April 2, 2020, 3 p.m. | 11.3 ppb (10) | 4.2 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| April 2, 2020, 2 p.m. | 41.7 ppb (39) | 23.1 ppb (21) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 | |
| April 2, 2020, 1 p.m. | 87.1 ppb (85) | 62.1 ppb (59) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 | |
| April 2, 2020, noon | 97.1 ppb (96) | 81.5 ppb (79) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 96.0 | |
| April 2, 2020, 11 a.m. | 57.9 ppb (54) | 45.9 ppb (42) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| April 2, 2020, 10 a.m. | 47.8 ppb (44) | 34.5 ppb (32) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 | |
| April 2, 2020, 9 a.m. | 40.3 ppb (37) | 25.3 ppb (23) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| April 2, 2020, 8 a.m. | 34.3 ppb (32) | 16.9 ppb (16) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 | |
| April 2, 2020, 7 a.m. | 32.3 ppb (30) | 13.9 ppb (13) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| April 2, 2020, 6 a.m. | 15.3 ppb (14) | 3.3 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 | |
| April 2, 2020, 5 a.m. | 31.9 ppb (30) | 10.8 ppb (10) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| April 2, 2020, 4 a.m. | 33.9 ppb (31) | 10.5 ppb (10) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| April 2, 2020, 3 a.m. | 38.0 ppb (35) | 14.2 ppb (13) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| April 2, 2020, 2 a.m. | 34.8 ppb (32) | 14.7 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 | |
| April 2, 2020, 1 a.m. | 30.4 ppb (28) | 11.9 ppb (11) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| April 2, 2020, midnight | 38.0 ppb (35) | 16.5 ppb (15) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| April 1, 2020, 11 p.m. | 29.1 ppb (27) | 12.8 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| April 1, 2020, 10 p.m. | 30.9 ppb (29) | 15.1 ppb (14) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 | |
| April 1, 2020, 9 p.m. | 31.5 ppb (29) | 17.2 ppb (16) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 | |
| April 1, 2020, 8 p.m. | 23.9 ppb (22) | 12.0 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 | |
| April 1, 2020, 7 p.m. | 29.9 ppb (28) | 16.1 ppb (15) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| April 1, 2020, 6 p.m. | 26.2 ppb (24) | 13.1 ppb (12) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| April 1, 2020, 5 p.m. | 31.5 ppb (29) | 17.0 ppb (16) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 | |
| April 1, 2020, 4 p.m. | 32.0 ppb (30) | 18.4 ppb (17) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| April 1, 2020, 3 p.m. | 31.5 ppb (29) | 18.2 ppb (17) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 | |
| April 1, 2020, 2 p.m. | 35.1 ppb (32) | 20.7 ppb (19) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 | |
| April 1, 2020, 1 p.m. | 39.9 ppb (37) | 23.3 ppb (22) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| April 1, 2020, noon | 46.2 ppb (43) | 25.9 ppb (24) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 | |
| April 1, 2020, 11 a.m. | 44.7 ppb (41) | 23.3 ppb (22) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 | |
| April 1, 2020, 10 a.m. | 41.7 ppb (39) | 20.3 ppb (19) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 | |
| April 1, 2020, 9 a.m. | 30.4 ppb (28) | 13.4 ppb (12) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| April 1, 2020, 8 a.m. | 17.6 ppb (16) | 7.1 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| April 1, 2020, 7 a.m. | 10.4 ppb (10) | 4.0 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| April 1, 2020, 6 a.m. | 8.6 ppb (8) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| April 1, 2020, 5 a.m. | 6.7 ppb (6) | 2.6 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| April 1, 2020, 4 a.m. | 8.1 ppb (8) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| April 1, 2020, 3 a.m. | 11.6 ppb (11) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| April 1, 2020, 2 a.m. | 10.1 ppb (9) | 4.2 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| April 1, 2020, 1 a.m. | 13.9 ppb (13) | 5.7 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| April 1, 2020, midnight | 17.3 ppb (16) | 7.2 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| March 31, 2020, 11 p.m. | 23.5 ppb (22) | 10.3 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 | |
| March 31, 2020, 10 p.m. | 27.8 ppb (26) | 12.5 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 | |
| March 31, 2020, 9 p.m. | 63.1 ppb (60) | 36.3 ppb (34) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 | |
| March 31, 2020, 8 p.m. | 45.0 ppb (42) | 22.7 ppb (21) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| March 31, 2020, 7 p.m. | 51.0 ppb (47) | 27.4 ppb (25) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| March 31, 2020, 6 p.m. | 56.8 ppb (53) | 31.4 ppb (29) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 | |
| March 31, 2020, 5 p.m. | 66.2 ppb (63) | 38.1 ppb (35) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 | |
| March 31, 2020, 4 p.m. | 78.0 ppb (76) | 47.1 ppb (44) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 76.0 | |
| March 31, 2020, 3 p.m. | 97.6 ppb (96) | 61.9 ppb (58) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 96.0 | |
| March 31, 2020, 2 p.m. | 16.0 ppb (15) | 6.2 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| March 31, 2020, 1 p.m. | 16.5 ppb (15) | 6.0 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| March 31, 2020, noon | 36.3 ppb (34) | 14.6 ppb (14) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| March 31, 2020, 11 a.m. | 73.6 ppb (71) | 37.2 ppb (34) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 71.0 | |
| March 31, 2020, 10 a.m. | 55.8 ppb (52) | 25.3 ppb (23) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 31, 2020, 9 a.m. | 29.7 ppb (28) | 10.5 ppb (10) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| March 31, 2020, 8 a.m. | 39.8 ppb (37) | 15.2 ppb (14) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| March 31, 2020, 7 a.m. | 32.7 ppb (30) | 7.0 ppb (6) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 31, 2020, 6 a.m. | 33.6 ppb (31) | 6.8 ppb (6) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| March 31, 2020, 5 a.m. | 36.5 ppb (34) | 9.4 ppb (9) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| March 31, 2020, 4 a.m. | 35.3 ppb (33) | 8.0 ppb (7) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| March 31, 2020, 3 a.m. | 27.3 ppb (25) | 3.6 ppb (3) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 31, 2020, 2 a.m. | 29.5 ppb (27) | 8.3 ppb (8) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| March 31, 2020, 1 a.m. | 45.7 ppb (42) | 13.1 ppb (12) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| March 31, 2020, midnight | 56.2 ppb (52) | 19.1 ppb (18) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 30, 2020, 11 p.m. | 49.3 ppb (46) | 16.5 ppb (15) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 | |
| March 30, 2020, 10 p.m. | 48.2 ppb (45) | 17.2 ppb (16) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 | |
| March 30, 2020, 9 p.m. | 40.3 ppb (37) | 14.3 ppb (13) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| March 30, 2020, 8 p.m. | 26.7 ppb (25) | 9.1 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 30, 2020, 7 p.m. | 28.9 ppb (27) | 11.3 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| March 30, 2020, 6 p.m. | 35.8 ppb (33) | 13.7 ppb (13) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| March 30, 2020, 5 p.m. | 28.2 ppb (26) | 11.0 ppb (10) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 | |
| March 30, 2020, 4 p.m. | 31.4 ppb (29) | 14.3 ppb (13) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 | |
| March 30, 2020, 3 p.m. | 37.9 ppb (35) | 18.3 ppb (17) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| March 30, 2020, 2 p.m. | 54.9 ppb (51) | 29.4 ppb (27) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 30, 2020, 1 p.m. | 42.7 ppb (40) | 18.1 ppb (17) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 | |
| March 30, 2020, noon | 55.0 ppb (51) | 23.2 ppb (21) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 30, 2020, 11 a.m. | 59.2 ppb (56) | 25.5 ppb (24) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 | |
| March 30, 2020, 10 a.m. | 51.6 ppb (48) | 21.7 ppb (20) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 | |
| March 30, 2020, 9 a.m. | 22.1 ppb (20) | 5.1 ppb (5) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| March 30, 2020, 8 a.m. | 16.3 ppb (15) | 3.2 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| March 30, 2020, 7 a.m. | 12.5 ppb (12) | 1.9 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 | |
| March 30, 2020, 6 a.m. | 13.1 ppb (12) | 2.6 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 | |
| March 30, 2020, 5 a.m. | 16.4 ppb (15) | 3.7 ppb (3) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| March 30, 2020, 4 a.m. | 20.3 ppb (19) | 3.1 ppb (3) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 | |
| March 30, 2020, 3 a.m. | 22.4 ppb (21) | 3.2 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 | |
| March 30, 2020, 2 a.m. | 21.1 ppb (20) | 3.1 ppb (3) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| March 30, 2020, 1 a.m. | 26.3 ppb (24) | 1.8 ppb (2) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| March 30, 2020, midnight | 20.0 ppb (19) | 1.9 ppb (2) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 | |
| March 29, 2020, 11 p.m. | 8.7 ppb (8) | 1.2 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 29, 2020, 8 p.m. | 7.7 ppb (7) | 2.2 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 | |
| March 29, 2020, 7 p.m. | 9.2 ppb (9) | 2.3 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| March 29, 2020, 6 p.m. | 11.1 ppb (10) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| March 29, 2020, 5 p.m. | 8.3 ppb (8) | 2.7 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 29, 2020, 4 p.m. | 12.2 ppb (11) | 4.6 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| March 29, 2020, 3 p.m. | 6.0 ppb (6) | 2.1 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 29, 2020, 2 p.m. | 2.8 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 1 p.m. | 2.9 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, noon | 3.4 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 11 a.m. | 3.9 ppb (4) | 1.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 29, 2020, 10 a.m. | 3.5 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 9 a.m. | 2.7 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 8 a.m. | 2.7 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 7 a.m. | 2.9 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 6 a.m. | 2.7 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 5 a.m. | 2.8 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 4 a.m. | 3.6 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 29, 2020, 3 a.m. | 27.4 ppb (25) | 8.3 ppb (8) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 29, 2020, 2 a.m. | 53.3 ppb (49) | 25.1 ppb (23) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 | |
| March 29, 2020, 1 a.m. | 8.9 ppb (8) | 1.9 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 29, 2020, midnight | 3.4 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 28, 2020, 11 p.m. | 2.5 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 10 p.m. | 1.8 ppb (2) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 9 p.m. | 2.0 ppb (2) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 8 p.m. | 1.8 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 7 p.m. | 2.0 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 6 p.m. | 2.1 ppb (2) | 0.8 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 28, 2020, 5 p.m. | 4.0 ppb (4) | 1.2 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 28, 2020, 4 p.m. | 3.9 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 28, 2020, 3 p.m. | 5.3 ppb (5) | 1.5 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 28, 2020, 2 p.m. | 5.8 ppb (5) | 1.3 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 28, 2020, 1 p.m. | 10.2 ppb (9) | 2.2 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| March 28, 2020, noon | 8.6 ppb (8) | 1.4 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 28, 2020, 11 a.m. | 5.3 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 28, 2020, 10 a.m. | 8.9 ppb (8) | 0.9 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 28, 2020, 9 a.m. | 17.2 ppb (16) | 2.1 ppb (2) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| March 28, 2020, 8 a.m. | 57.8 ppb (54) | 33.8 ppb (31) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| March 28, 2020, 7 a.m. | 68.8 ppb (66) | 43.1 ppb (40) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 | |
| March 28, 2020, 6 a.m. | 58.6 ppb (55) | 33.3 ppb (31) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 | |
| March 28, 2020, 5 a.m. | 34.3 ppb (32) | 7.8 ppb (7) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 | |
| March 28, 2020, 4 a.m. | 52.6 ppb (49) | 21.6 ppb (20) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 | |
| March 28, 2020, 3 a.m. | 54.5 ppb (51) | 26.3 ppb (24) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 28, 2020, 2 a.m. | 5.0 ppb (5) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 28, 2020, 1 a.m. | 7.2 ppb (7) | 0.7 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 | |
| March 28, 2020, midnight | 5.1 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 27, 2020, 11 p.m. | 3.0 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 27, 2020, 10 p.m. | 2.4 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 27, 2020, 9 p.m. | 2.6 ppb (2) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 27, 2020, 8 p.m. | 2.6 ppb (2) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 27, 2020, 7 p.m. | 4.3 ppb (4) | 1.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 27, 2020, 6 p.m. | 3.5 ppb (3) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 27, 2020, 5 p.m. | 6.4 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 27, 2020, 4 p.m. | 8.1 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 27, 2020, 3 p.m. | 20.7 ppb (19) | 6.9 ppb (6) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 | |
| March 27, 2020, 2 p.m. | 59.2 ppb (56) | 36.2 ppb (34) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 | |
| March 27, 2020, 1 p.m. | 98.7 ppb (98) | 78.8 ppb (76) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 98.0 | |
| March 27, 2020, noon | 156.6 ppb (111) | 139.9 ppb (107) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 111.0 | |
| March 27, 2020, 11 a.m. | 107.1 ppb (101) | 95.4 ppb (94) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 | |
| March 27, 2020, 10 a.m. | 80.8 ppb (79) | 68.6 ppb (66) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 79.0 | |
| March 27, 2020, 9 a.m. | 68.3 ppb (65) | 55.1 ppb (51) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 | |
| March 27, 2020, 8 a.m. | 78.0 ppb (76) | 62.2 ppb (59) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 76.0 | |
| March 27, 2020, 7 a.m. | 68.7 ppb (66) | 51.3 ppb (48) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 | |
| March 27, 2020, 6 a.m. | 44.9 ppb (42) | 27.2 ppb (25) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| March 27, 2020, 5 a.m. | 56.3 ppb (52) | 34.5 ppb (32) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 27, 2020, 4 a.m. | 69.9 ppb (67) | 42.4 ppb (39) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 | |
| March 27, 2020, 3 a.m. | 83.7 ppb (82) | 51.4 ppb (48) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 82.0 | |
| March 27, 2020, 2 a.m. | 96.3 ppb (95) | 59.1 ppb (55) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 95.0 | |
| March 27, 2020, 1 a.m. | 88.8 ppb (87) | 49.5 ppb (46) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 87.0 | |
| March 27, 2020, midnight | 76.7 ppb (74) | 40.9 ppb (38) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 74.0 | |
| March 26, 2020, 11 p.m. | 9.3 ppb (9) | 1.5 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| March 26, 2020, 10 p.m. | 3.5 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 26, 2020, 9 p.m. | 5.0 ppb (5) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 26, 2020, 8 p.m. | 10.6 ppb (10) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| March 26, 2020, 7 p.m. | 7.1 ppb (7) | 2.1 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 | |
| March 26, 2020, 6 p.m. | 10.0 ppb (9) | 4.4 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| March 26, 2020, 5 p.m. | 20.0 ppb (19) | 11.0 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 |