Blount Co TN, US: 35.6322, -83.9422
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 25, 2019, midnight | N/A | 0.1 ppb (0) | 2.6 ppb (2) | N/A | 2.6 ppb (2) | N/A | 63.0 ppb (48) | 0.2 ppb (2) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 24, 2019, 11 p.m. | N/A | 0.1 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 63.0 ppb (48) | 0.21 ppb (2) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 24, 2019, 10 p.m. | N/A | 0.1 ppb (0) | 2.8 ppb (3) | N/A | 2.7 ppb (3) | N/A | 62.0 ppb (48) | 0.21 ppb (2) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 24, 2019, 9 p.m. | N/A | 0.1 ppb (0) | 3.3 ppb (3) | N/A | 3.3 ppb (3) | N/A | 62.0 ppb (48) | 0.2 ppb (2) | N/A | 19.0 μg/m3 (65) | 65.0 | |
| March 24, 2019, 8 p.m. | N/A | 0.1 ppb (0) | 3.7 ppb (3) | N/A | 3.6 ppb (3) | N/A | 64.0 ppb (49) | 0.23 ppb (3) | N/A | 23.0 μg/m3 (73) | 73.0 | |
| March 24, 2019, 7 p.m. | N/A | 0.1 ppb (0) | 3.2 ppb (3) | N/A | 3.1 ppb (3) | N/A | 59.0 ppb (45) | 0.21 ppb (2) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| March 24, 2019, 6 p.m. | N/A | 0.1 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 59.0 ppb (45) | 0.19 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 24, 2019, 5 p.m. | N/A | 0.2 ppb (0) | 3.3 ppb (3) | N/A | 3.1 ppb (3) | N/A | 53.0 ppb (41) | 0.21 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 24, 2019, 4 p.m. | N/A | 0.2 ppb (0) | 2.6 ppb (2) | N/A | 2.4 ppb (2) | N/A | 46.0 ppb (35) | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 24, 2019, 3 p.m. | N/A | 0.1 ppb (0) | 2.7 ppb (3) | N/A | 2.6 ppb (2) | N/A | 51.0 ppb (39) | 0.2 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 24, 2019, 2 p.m. | N/A | 0.1 ppb (0) | 2.5 ppb (2) | N/A | 2.4 ppb (2) | N/A | 53.0 ppb (41) | 0.19 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 24, 2019, 1 p.m. | N/A | 0.1 ppb (0) | 2.5 ppb (2) | N/A | 2.4 ppb (2) | N/A | 54.0 ppb (42) | 0.19 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 24, 2019, noon | N/A | 0.2 ppb (0) | 15.6 ppb (14) | N/A | 15.5 ppb (14) | N/A | 54.0 ppb (42) | 0.18 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 24, 2019, 11 a.m. | N/A | 0.9 ppb (1) | 34.4 ppb (32) | N/A | 33.6 ppb (31) | N/A | 55.0 ppb (42) | 0.18 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 24, 2019, 10 a.m. | N/A | 0.1 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 54.0 ppb (42) | 0.18 ppb (2) | N/A | 8.0 μg/m3 (33) | 42.0 | |
| March 24, 2019, 9 a.m. | N/A | 0.1 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 51.0 ppb (39) | 0.17 ppb (2) | N/A | 8.0 μg/m3 (33) | 39.0 | |
| March 24, 2019, 8 a.m. | N/A | 0.1 ppb (0) | 2.2 ppb (2) | N/A | 2.1 ppb (2) | N/A | 54.0 ppb (42) | 0.17 ppb (2) | N/A | 7.0 μg/m3 (29) | 42.0 | |
| March 24, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 56.0 ppb (43) | 0.17 ppb (2) | N/A | 7.0 μg/m3 (29) | 43.0 | |
| March 24, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 5.0 μg/m3 (21) | 43.0 | |
| March 24, 2019, 5 a.m. | N/A | 0.1 ppb (0) | 1.3 ppb (1) | N/A | 1.3 ppb (1) | N/A | 54.0 ppb (42) | 0.16 ppb (2) | N/A | 4.0 μg/m3 (17) | 42.0 | |
| March 24, 2019, 4 a.m. | N/A | 0.1 ppb (0) | 1.2 ppb (1) | N/A | 1.1 ppb (1) | N/A | 54.0 ppb (42) | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 42.0 | |
| March 24, 2019, 3 a.m. | N/A | 0.1 ppb (0) | 1.5 ppb (1) | N/A | 1.4 ppb (1) | N/A | 54.0 ppb (42) | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| March 24, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 4.0 μg/m3 (17) | 42.0 | |
| March 24, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 1.9 ppb (2) | N/A | 55.0 ppb (42) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| March 24, 2019, midnight | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 55.0 ppb (42) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 42.0 | |
| March 23, 2019, 11 p.m. | N/A | 0.1 ppb (0) | 2.1 ppb (2) | N/A | 2.0 ppb (2) | N/A | 56.0 ppb (43) | 0.16 ppb (2) | N/A | 4.0 μg/m3 (17) | 43.0 | |
| March 23, 2019, 10 p.m. | N/A | 0.1 ppb (0) | 1.5 ppb (1) | N/A | 1.4 ppb (1) | N/A | 55.0 ppb (42) | 0.15 ppb (2) | N/A | 3.0 μg/m3 (12) | 42.0 | |
| March 23, 2019, 9 p.m. | N/A | 0.1 ppb (0) | 1.7 ppb (2) | N/A | 1.7 ppb (2) | N/A | 55.0 ppb (42) | 0.16 ppb (2) | N/A | 2.0 μg/m3 (8) | 42.0 | |
| March 23, 2019, 8 p.m. | N/A | 0.1 ppb (0) | 1.8 ppb (2) | N/A | 1.7 ppb (2) | N/A | 54.0 ppb (42) | 0.16 ppb (2) | N/A | 2.0 μg/m3 (8) | 42.0 | |
| March 23, 2019, 7 p.m. | N/A | 0.1 ppb (0) | 1.8 ppb (2) | N/A | 1.7 ppb (2) | N/A | 53.0 ppb (41) | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 41.0 | |
| March 23, 2019, 6 p.m. | N/A | 0.1 ppb (0) | 1.8 ppb (2) | N/A | 1.7 ppb (2) | N/A | 52.0 ppb (40) | 0.16 ppb (2) | N/A | 3.0 μg/m3 (12) | 40.0 | |
| March 23, 2019, 5 p.m. | N/A | 0.1 ppb (0) | 1.3 ppb (1) | N/A | 1.3 ppb (1) | N/A | 50.0 ppb (38) | 0.15 ppb (2) | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 23, 2019, 4 p.m. | N/A | 0.1 ppb (0) | 1.4 ppb (1) | N/A | 1.3 ppb (1) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 3.0 μg/m3 (12) | 38.0 | |
| March 23, 2019, 3 p.m. | N/A | 0.1 ppb (0) | 1.6 ppb (1) | N/A | 1.5 ppb (1) | N/A | 47.0 ppb (36) | 0.16 ppb (2) | N/A | 7.0 μg/m3 (29) | 36.0 | |
| March 23, 2019, 2 p.m. | N/A | 0.1 ppb (0) | 1.3 ppb (1) | N/A | 1.2 ppb (1) | N/A | 50.0 ppb (38) | 0.15 ppb (2) | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 23, 2019, 1 p.m. | N/A | 0.1 ppb (0) | 1.5 ppb (1) | N/A | 1.4 ppb (1) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 23, 2019, noon | N/A | 0.1 ppb (0) | 1.6 ppb (1) | N/A | 1.5 ppb (1) | N/A | 47.0 ppb (36) | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| March 23, 2019, 11 a.m. | N/A | 0.0 ppb (0) | 1.3 ppb (1) | N/A | 1.3 ppb (1) | N/A | 47.0 ppb (36) | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| March 23, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 1.4 ppb (1) | N/A | 1.3 ppb (1) | N/A | 47.0 ppb (36) | 0.13 ppb (1) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| March 23, 2019, 9 a.m. | N/A | 0.1 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | N/A | 48.0 ppb (37) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 37.0 | |
| March 23, 2019, 8 a.m. | N/A | 0.1 ppb (0) | 2.0 ppb (2) | N/A | 1.9 ppb (2) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| March 23, 2019, 7 a.m. | N/A | 0.1 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | N/A | 50.0 ppb (38) | 0.15 ppb (2) | N/A | 3.0 μg/m3 (12) | 38.0 | |
| March 23, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 4.0 μg/m3 (17) | 38.0 | |
| March 23, 2019, 5 a.m. | N/A | 0.0 ppb (0) | 3.2 ppb (3) | N/A | 3.1 ppb (3) | N/A | 49.0 ppb (38) | 0.16 ppb (2) | N/A | 7.0 μg/m3 (29) | 38.0 | |
| March 23, 2019, 4 a.m. | N/A | 0.1 ppb (0) | 3.2 ppb (3) | N/A | 3.2 ppb (3) | N/A | 49.0 ppb (38) | 0.16 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 23, 2019, 3 a.m. | N/A | 0.1 ppb (0) | 3.8 ppb (4) | N/A | 3.8 ppb (4) | N/A | 50.0 ppb (38) | 0.16 ppb (2) | N/A | 8.0 μg/m3 (33) | 38.0 | |
| March 23, 2019, 2 a.m. | N/A | 0.0 ppb (0) | 3.5 ppb (3) | N/A | 3.5 ppb (3) | N/A | 52.0 ppb (40) | 0.15 ppb (2) | N/A | 8.0 μg/m3 (33) | 40.0 | |
| March 23, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 3.2 ppb (3) | N/A | 3.2 ppb (3) | N/A | 51.0 ppb (39) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 39.0 | |
| March 23, 2019, midnight | N/A | 0.1 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 50.0 ppb (38) | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 38.0 | |
| March 22, 2019, 11 p.m. | N/A | 0.1 ppb (0) | 2.6 ppb (2) | N/A | 2.6 ppb (2) | N/A | 51.0 ppb (39) | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 39.0 | |
| March 22, 2019, 10 p.m. | N/A | 0.1 ppb (0) | 2.3 ppb (2) | N/A | 2.3 ppb (2) | N/A | 53.0 ppb (41) | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 41.0 | |
| March 22, 2019, 9 p.m. | N/A | 0.1 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 53.0 ppb (41) | 0.15 ppb (2) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| March 22, 2019, 8 p.m. | N/A | 0.1 ppb (0) | 2.5 ppb (2) | N/A | 2.4 ppb (2) | N/A | 51.0 ppb (39) | 0.14 ppb (2) | N/A | 3.0 μg/m3 (12) | 39.0 | |
| March 22, 2019, 7 p.m. | N/A | 0.1 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 38.0 | |
| March 22, 2019, 6 p.m. | N/A | 0.1 ppb (0) | 2.7 ppb (3) | N/A | 2.6 ppb (2) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 5.0 μg/m3 (21) | 38.0 | |
| March 22, 2019, 5 p.m. | N/A | 0.1 ppb (0) | 3.1 ppb (3) | N/A | 3.0 ppb (3) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (29) | 38.0 | |
| March 22, 2019, 4 p.m. | N/A | 0.1 ppb (0) | 2.9 ppb (3) | N/A | 2.7 ppb (3) | N/A | 47.0 ppb (36) | 0.14 ppb (2) | N/A | 6.0 μg/m3 (25) | 36.0 | |
| March 22, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 5.0 μg/m3 (21) | 35.0 | |
| March 22, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 22, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| March 22, 2019, noon | N/A | 0.7 ppb (1) | 16.6 ppb (15) | N/A | 15.8 ppb (15) | N/A | 41.0 ppb (32) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 32.0 | |
| March 22, 2019, 11 a.m. | N/A | 0.7 ppb (1) | 36.1 ppb (33) | N/A | 35.4 ppb (33) | N/A | 38.0 ppb (29) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 33.0 | |
| March 22, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 3.2 ppb (3) | N/A | 3.2 ppb (3) | N/A | 38.0 ppb (29) | 0.17 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2019, 9 a.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.1 ppb (3) | N/A | 38.0 ppb (29) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| March 22, 2019, 8 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.9 ppb (3) | N/A | 38.0 ppb (29) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 22, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 38.0 ppb (29) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| March 22, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 22, 2019, 5 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (2) | N/A | 2.5 ppb (2) | N/A | 39.0 ppb (30) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| March 22, 2019, 4 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 41.0 ppb (32) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 32.0 | |
| March 22, 2019, 3 a.m. | N/A | 0.0 ppb (0) | 2.6 ppb (2) | N/A | 2.6 ppb (2) | N/A | 42.0 ppb (32) | 0.17 ppb (2) | N/A | 7.0 μg/m3 (29) | 32.0 | |
| March 22, 2019, 2 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 43.0 ppb (33) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 33.0 | |
| March 22, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 3.4 ppb (3) | N/A | 3.4 ppb (3) | N/A | 40.0 ppb (31) | 0.18 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 22, 2019, midnight | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 42.0 ppb (32) | 0.18 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 21, 2019, 11 p.m. | N/A | 0.0 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 45.0 ppb (35) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 21, 2019, 10 p.m. | N/A | 0.0 ppb (0) | 2.3 ppb (2) | N/A | 2.3 ppb (2) | N/A | 46.0 ppb (35) | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 21, 2019, 9 p.m. | N/A | 0.1 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 47.0 ppb (36) | 0.2 ppb (2) | N/A | 8.0 μg/m3 (33) | 36.0 | |
| March 21, 2019, 8 p.m. | N/A | 0.1 ppb (0) | 2.5 ppb (2) | N/A | 2.5 ppb (2) | N/A | 46.0 ppb (35) | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 21, 2019, 7 p.m. | N/A | 0.2 ppb (0) | 3.1 ppb (3) | N/A | 2.9 ppb (3) | N/A | 41.0 ppb (32) | 0.22 ppb (2) | N/A | 7.0 μg/m3 (29) | 32.0 | |
| March 21, 2019, 6 p.m. | N/A | 0.1 ppb (0) | 3.2 ppb (3) | N/A | 3.2 ppb (3) | N/A | 43.0 ppb (33) | 0.21 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 21, 2019, 5 p.m. | N/A | 0.0 ppb (0) | 3.6 ppb (3) | N/A | 3.5 ppb (3) | N/A | 44.0 ppb (34) | 0.22 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 21, 2019, 4 p.m. | N/A | 0.0 ppb (0) | 3.4 ppb (3) | N/A | 3.3 ppb (3) | N/A | 50.0 ppb (38) | 0.21 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 21, 2019, 3 p.m. | N/A | 0.1 ppb (0) | 4.1 ppb (4) | N/A | 4.0 ppb (4) | N/A | 54.0 ppb (42) | 0.22 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 21, 2019, 2 p.m. | N/A | 0.1 ppb (0) | 4.1 ppb (4) | N/A | 4.0 ppb (4) | N/A | 55.0 ppb (42) | 0.22 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 21, 2019, 1 p.m. | N/A | 0.1 ppb (0) | 4.2 ppb (4) | N/A | 4.1 ppb (4) | N/A | 51.0 ppb (39) | 0.22 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 21, 2019, noon | N/A | 0.0 ppb (0) | 4.1 ppb (4) | N/A | 4.0 ppb (4) | N/A | 56.0 ppb (43) | 0.21 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 21, 2019, 11 a.m. | N/A | 0.0 ppb (0) | 4.1 ppb (4) | N/A | 4.1 ppb (4) | N/A | 58.0 ppb (45) | 0.2 ppb (2) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 21, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 3.6 ppb (3) | N/A | 3.6 ppb (3) | N/A | 61.0 ppb (47) | 0.2 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 21, 2019, 9 a.m. | N/A | 0.0 ppb (0) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | 62.0 ppb (48) | 0.2 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 21, 2019, 8 a.m. | N/A | 0.0 ppb (0) | 4.2 ppb (4) | N/A | 4.2 ppb (4) | N/A | 63.0 ppb (48) | 0.21 ppb (2) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 21, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 4.1 ppb (4) | N/A | 4.1 ppb (4) | N/A | 62.0 ppb (48) | 0.21 ppb (2) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 21, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | N/A | 15.0 μg/m3 (56) | 56.0 | |
| March 21, 2019, 5 a.m. | N/A | 0.0 ppb (0) | 3.8 ppb (4) | N/A | 3.8 ppb (4) | N/A | 62.0 ppb (48) | 0.2 ppb (2) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 21, 2019, 4 a.m. | N/A | 0.0 ppb (0) | 3.6 ppb (3) | N/A | 3.6 ppb (3) | N/A | 63.0 ppb (48) | 0.19 ppb (2) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 21, 2019, 3 a.m. | N/A | 0.1 ppb (0) | 3.9 ppb (4) | N/A | 3.8 ppb (4) | N/A | 63.0 ppb (48) | 0.19 ppb (2) | N/A | 11.0 μg/m3 (46) | 48.0 | |
| March 21, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | N/A | 10.0 μg/m3 (42) | 48.0 | |
| March 21, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 4.3 ppb (4) | N/A | 4.3 ppb (4) | N/A | 63.0 ppb (48) | 0.2 ppb (2) | N/A | 11.0 μg/m3 (46) | 48.0 | |
| March 21, 2019, midnight | N/A | 0.0 ppb (0) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | 62.0 ppb (48) | 0.2 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 20, 2019, 11 p.m. | N/A | 0.0 ppb (0) | 3.5 ppb (3) | N/A | 3.5 ppb (3) | N/A | 61.0 ppb (47) | 0.19 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| March 20, 2019, 10 p.m. | N/A | 0.0 ppb (0) | 3.1 ppb (3) | N/A | 3.1 ppb (3) | N/A | 61.0 ppb (47) | 0.19 ppb (2) | N/A | 10.0 μg/m3 (42) | 47.0 | |
| March 20, 2019, 9 p.m. | N/A | 0.0 ppb (0) | 3.3 ppb (3) | N/A | 3.3 ppb (3) | N/A | 60.0 ppb (46) | 0.2 ppb (2) | N/A | 9.0 μg/m3 (38) | 46.0 | |
| March 20, 2019, 8 p.m. | N/A | 0.0 ppb (0) | 3.3 ppb (3) | N/A | 3.3 ppb (3) | N/A | 60.0 ppb (46) | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 46.0 | |
| March 20, 2019, 7 p.m. | N/A | 0.1 ppb (0) | 3.2 ppb (3) | N/A | 3.1 ppb (3) | N/A | 58.0 ppb (45) | 0.2 ppb (2) | N/A | 9.0 μg/m3 (38) | 45.0 | |
| March 20, 2019, 6 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.7 ppb (3) | N/A | 55.0 ppb (42) | 0.21 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 20, 2019, 5 p.m. | N/A | 0.0 ppb (0) | 2.6 ppb (2) | N/A | 2.6 ppb (2) | N/A | 54.0 ppb (42) | 0.19 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| March 20, 2019, 4 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 54.0 ppb (42) | 0.19 ppb (2) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 20, 2019, 3 p.m. | N/A | 0.1 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 53.0 ppb (41) | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 20, 2019, 2 p.m. | N/A | 0.1 ppb (0) | 2.7 ppb (3) | N/A | 2.6 ppb (2) | N/A | 49.0 ppb (38) | 0.2 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 20, 2019, 1 p.m. | N/A | 0.1 ppb (0) | 2.5 ppb (2) | N/A | 2.4 ppb (2) | N/A | 50.0 ppb (38) | 0.19 ppb (2) | N/A | 8.0 μg/m3 (33) | 38.0 | |
| March 20, 2019, noon | N/A | 1.0 ppb (1) | 16.0 ppb (15) | N/A | 15.0 ppb (14) | N/A | 51.0 ppb (39) | 0.18 ppb (2) | N/A | 8.0 μg/m3 (33) | 39.0 | |
| March 20, 2019, 11 a.m. | N/A | 0.5 ppb (0) | 35.3 ppb (33) | N/A | 34.8 ppb (32) | N/A | 52.0 ppb (40) | 0.18 ppb (2) | N/A | 9.0 μg/m3 (38) | 40.0 | |
| March 20, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.1 ppb (2) | N/A | 52.0 ppb (40) | 0.18 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 20, 2019, 9 a.m. | N/A | 0.0 ppb (0) | 2.2 ppb (2) | N/A | 2.2 ppb (2) | N/A | 52.0 ppb (40) | 0.19 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| March 20, 2019, 8 a.m. | N/A | 0.0 ppb (0) | 2.3 ppb (2) | N/A | 2.3 ppb (2) | N/A | 52.0 ppb (40) | 0.19 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 20, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 2.4 ppb (2) | N/A | 2.4 ppb (2) | N/A | 53.0 ppb (41) | 0.18 ppb (2) | N/A | 8.0 μg/m3 (33) | 41.0 | |
| March 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 8.0 μg/m3 (33) | 42.0 | |
| March 20, 2019, 5 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (2) | N/A | 2.4 ppb (2) | N/A | 54.0 ppb (42) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 20, 2019, 4 a.m. | N/A | 0.0 ppb (0) | 2.6 ppb (2) | N/A | 2.6 ppb (2) | N/A | 53.0 ppb (41) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| March 20, 2019, 3 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | 54.0 ppb (42) | 0.19 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 20, 2019, 2 a.m. | N/A | 0.0 ppb (0) | 3.0 ppb (3) | N/A | 2.9 ppb (3) | N/A | 55.0 ppb (42) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 42.0 | |
| March 20, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | N/A | 56.0 ppb (43) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 43.0 | |
| March 20, 2019, midnight | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 55.0 ppb (42) | 0.18 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 19, 2019, 11 p.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 54.0 ppb (42) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 42.0 | |
| March 19, 2019, 10 p.m. | N/A | 0.1 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | N/A | 55.0 ppb (42) | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 19, 2019, 9 p.m. | N/A | 0.2 ppb (0) | 3.3 ppb (3) | N/A | 3.2 ppb (3) | N/A | 55.0 ppb (42) | 0.21 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 19, 2019, 8 p.m. | N/A | 0.2 ppb (0) | 3.1 ppb (3) | N/A | 2.9 ppb (3) | N/A | 54.0 ppb (42) | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| March 19, 2019, 7 p.m. | N/A | 0.2 ppb (0) | 2.7 ppb (3) | N/A | 2.6 ppb (2) | N/A | 54.0 ppb (42) | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 42.0 | |
| March 19, 2019, 6 p.m. | N/A | 0.1 ppb (0) | 2.3 ppb (2) | N/A | 2.2 ppb (2) | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 2.0 | |
| March 19, 2019, 5 p.m. | N/A | 0.2 ppb (0) | 2.3 ppb (2) | N/A | 2.1 ppb (2) | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 2.0 | |
| March 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| March 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 6.0 μg/m3 (25) | 36.0 | |
| March 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 5.0 μg/m3 (21) | 35.0 | |
| March 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 7.0 μg/m3 (29) | 35.0 | |
| March 19, 2019, 11 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.2 ppb (0) | N/A | 44.0 ppb (34) | 0.16 ppb (2) | N/A | 7.0 μg/m3 (29) | 34.0 | |
| March 19, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | N/A | 43.0 ppb (33) | 0.16 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 19, 2019, 9 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | N/A | 44.0 ppb (34) | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 34.0 | |
| March 19, 2019, 8 a.m. | N/A | 0.0 ppb (0) | 0.2 ppb (0) | N/A | 0.2 ppb (0) | N/A | 44.0 ppb (34) | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 34.0 | |
| March 19, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 0.2 ppb (0) | N/A | 0.2 ppb (0) | N/A | 45.0 ppb (35) | 0.17 ppb (2) | N/A | 5.0 μg/m3 (21) | 35.0 | |
| March 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 5.0 μg/m3 (21) | 35.0 | |
| March 19, 2019, 5 a.m. | N/A | 0.0 ppb (0) | -0.1 ppb (0) | N/A | -0.1 ppb (0) | N/A | 47.0 ppb (36) | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| March 19, 2019, 4 a.m. | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 47.0 ppb (36) | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 36.0 | |
| March 19, 2019, 3 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | N/A | 47.0 ppb (36) | 0.16 ppb (2) | N/A | 6.0 μg/m3 (25) | 36.0 | |
| March 19, 2019, 2 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | N/A | 48.0 ppb (37) | 0.16 ppb (2) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| March 19, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 0.1 ppb (0) | N/A | 0.0 ppb (0) | N/A | 49.0 ppb (38) | 0.16 ppb (2) | N/A | 6.0 μg/m3 (25) | 38.0 | |
| March 19, 2019, midnight | N/A | 0.0 ppb (0) | -0.1 ppb (0) | N/A | -0.1 ppb (0) | N/A | 49.0 ppb (38) | 0.15 ppb (2) | N/A | 5.0 μg/m3 (21) | 38.0 | |
| March 18, 2019, 11 p.m. | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | -0.1 ppb (0) | N/A | 50.0 ppb (38) | 0.15 ppb (2) | N/A | 7.0 μg/m3 (29) | 38.0 | |
| March 18, 2019, 10 p.m. | N/A | 0.1 ppb (0) | 0.0 ppb (0) | N/A | -0.1 ppb (0) | N/A | 51.0 ppb (39) | 0.14 ppb (2) | N/A | 5.0 μg/m3 (21) | 39.0 | |
| March 18, 2019, 9 p.m. | N/A | 0.1 ppb (0) | -0.2 ppb (0) | N/A | -0.3 ppb (0) | N/A | 51.0 ppb (39) | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 39.0 | |
| March 18, 2019, 8 p.m. | N/A | 0.1 ppb (0) | -0.3 ppb (0) | N/A | -0.4 ppb (0) | N/A | 51.0 ppb (39) | 0.17 ppb (2) | N/A | 3.0 μg/m3 (12) | 39.0 | |
| March 18, 2019, 7 p.m. | N/A | 0.1 ppb (0) | -0.2 ppb (0) | N/A | -0.3 ppb (0) | N/A | 51.0 ppb (39) | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 39.0 | |
| March 18, 2019, 6 p.m. | N/A | 0.2 ppb (0) | 0.1 ppb (0) | N/A | -0.1 ppb (0) | N/A | 50.0 ppb (38) | 0.17 ppb (2) | N/A | 2.0 μg/m3 (8) | 38.0 | |
| March 18, 2019, 5 p.m. | N/A | 0.3 ppb (0) | 0.6 ppb (1) | N/A | 0.3 ppb (0) | N/A | 48.0 ppb (37) | 0.18 ppb (2) | N/A | 2.0 μg/m3 (8) | 37.0 | |
| March 18, 2019, 4 p.m. | N/A | 0.4 ppb (0) | 1.0 ppb (1) | N/A | 0.6 ppb (1) | N/A | 46.0 ppb (35) | 0.18 ppb (2) | N/A | 3.0 μg/m3 (12) | 35.0 | |
| March 18, 2019, 3 p.m. | N/A | 0.7 ppb (1) | 3.2 ppb (3) | N/A | 2.6 ppb (2) | N/A | 42.0 ppb (32) | 0.21 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| March 18, 2019, 2 p.m. | N/A | 0.6 ppb (1) | 3.0 ppb (3) | N/A | 2.4 ppb (2) | N/A | 39.0 ppb (30) | 0.21 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 18, 2019, 1 p.m. | N/A | 0.4 ppb (0) | 2.6 ppb (2) | N/A | 2.2 ppb (2) | N/A | 39.0 ppb (30) | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 18, 2019, noon | N/A | 0.5 ppb (0) | 16.0 ppb (15) | N/A | 15.5 ppb (14) | N/A | 39.0 ppb (30) | 0.2 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| March 18, 2019, 11 a.m. | N/A | 1.0 ppb (1) | 35.9 ppb (33) | N/A | 34.9 ppb (32) | N/A | 40.0 ppb (31) | 0.2 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 18, 2019, 10 a.m. | N/A | 0.0 ppb (0) | 1.4 ppb (1) | N/A | 1.4 ppb (1) | N/A | 42.0 ppb (32) | 0.19 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 18, 2019, 9 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.7 ppb (1) | N/A | 46.0 ppb (35) | 0.19 ppb (2) | N/A | 7.0 μg/m3 (29) | 35.0 | |
| March 18, 2019, 8 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.7 ppb (1) | N/A | 46.0 ppb (35) | 0.19 ppb (2) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| March 18, 2019, 7 a.m. | N/A | 0.0 ppb (0) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | 48.0 ppb (37) | 0.19 ppb (2) | N/A | 7.0 μg/m3 (29) | 37.0 | |
| March 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| March 18, 2019, 5 a.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | N/A | 52.0 ppb (40) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 40.0 | |
| March 18, 2019, 4 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.3 ppb (0) | N/A | 52.0 ppb (40) | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 40.0 | |
| March 18, 2019, 3 a.m. | N/A | 0.1 ppb (0) | 0.5 ppb (0) | N/A | 0.4 ppb (0) | N/A | 53.0 ppb (41) | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 41.0 | |
| March 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 6.0 μg/m3 (25) | 41.0 | |
| March 18, 2019, 1 a.m. | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 51.0 ppb (39) | 0.16 ppb (2) | N/A | 6.0 μg/m3 (25) | 39.0 |