Phoenix (R C Esterbrooks Blvd) AZ, US: 33.4265, -112.1181
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| March 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (23) | 5.8 μg/m3 (24) | 24.0 | |
| March 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 μg/m3 (30) | 13.3 μg/m3 (53) | 53.0 | |
| March 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (23) | 6.9 μg/m3 (29) | 29.0 | |
| March 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 μg/m3 (36) | 8.5 μg/m3 (35) | 36.0 | |
| March 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 72.0 μg/m3 (58) | 12.2 μg/m3 (50) | 58.0 | |
| March 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 μg/m3 (45) | 8.7 μg/m3 (36) | 45.0 | |
| March 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 μg/m3 (17) | 5.7 μg/m3 (24) | 24.0 | |
| March 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (14) | 5.4 μg/m3 (23) | 23.0 | |
| March 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 13.0 μg/m3 (12) | 5.3 μg/m3 (22) | 22.0 | |
| March 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 μg/m3 (33) | 8.1 μg/m3 (34) | 34.0 | |
| March 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 μg/m3 (26) | 9.1 μg/m3 (38) | 38.0 | |
| March 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (27) | 10.2 μg/m3 (42) | 42.0 | |
| March 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 μg/m3 (33) | 9.9 μg/m3 (41) | 41.0 | |
| March 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 μg/m3 (41) | 12.1 μg/m3 (50) | 50.0 | |
| March 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 μg/m3 (50) | 13.2 μg/m3 (53) | 53.0 | |
| March 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 μg/m3 (32) | 9.1 μg/m3 (38) | 38.0 | |
| March 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 μg/m3 (30) | 3.4 μg/m3 (14) | 30.0 | |
| March 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | -0.3 μg/m3 (0) | 3.0 | |
| March 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 2.7 μg/m3 (11) | 11.0 | |
| March 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | 5.0 μg/m3 (21) | 21.0 | |
| March 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 4.3 μg/m3 (18) | 18.0 | |
| March 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (13) | 3.6 μg/m3 (15) | 15.0 | |
| March 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 3.6 μg/m3 (15) | 16.0 | |
| March 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 μg/m3 (20) | 5.8 μg/m3 (24) | 24.0 | |
| March 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 μg/m3 (24) | 10.4 μg/m3 (43) | 43.0 | |
| March 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| March 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 26.0 μg/m3 (24) | 5.2 μg/m3 (22) | 24.0 | |
| March 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 μg/m3 (31) | 7.1 μg/m3 (30) | 31.0 | |
| March 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 76.0 μg/m3 (60) | 10.4 μg/m3 (43) | 60.0 | |
| March 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 63.0 μg/m3 (54) | 6.5 μg/m3 (27) | 54.0 | |
| March 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 μg/m3 (19) | 4.8 μg/m3 (20) | 20.0 | |
| March 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 17.0 μg/m3 (15) | 5.1 μg/m3 (21) | 21.0 | |
| March 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 μg/m3 (20) | 7.6 μg/m3 (32) | 32.0 | |
| March 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 10.1 μg/m3 (42) | 42.0 | |
| March 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 μg/m3 (42) | 12.3 μg/m3 (51) | 51.0 | |
| March 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 μg/m3 (38) | 12.2 μg/m3 (50) | 50.0 | |
| March 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 μg/m3 (24) | 9.1 μg/m3 (38) | 38.0 | |
| March 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 μg/m3 (30) | 10.1 μg/m3 (42) | 42.0 | |
| March 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 μg/m3 (32) | 9.3 μg/m3 (39) | 39.0 | |
| March 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 μg/m3 (30) | 7.9 μg/m3 (33) | 33.0 | |
| March 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (23) | 7.0 μg/m3 (29) | 29.0 | |
| March 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (13) | 8.4 μg/m3 (35) | 35.0 | |
| March 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 13.0 μg/m3 (12) | 7.0 μg/m3 (29) | 29.0 | |
| March 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 9.0 μg/m3 (8) | 2.7 μg/m3 (11) | 11.0 | |
| March 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.0 μg/m3 (7) | 2.2 μg/m3 (9) | 9.0 | |
| March 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | 3.2 μg/m3 (13) | 13.0 | |
| March 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 4.5 μg/m3 (19) | 19.0 | |
| March 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 1.1 μg/m3 (5) | 9.0 | |
| March 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 2.8 μg/m3 (12) | 12.0 | |
| March 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 20.0 μg/m3 (18) | 6.1 μg/m3 (25) | 25.0 | |
| March 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 30.0 μg/m3 (27) | 3.5 μg/m3 (15) | 27.0 | |
| March 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 μg/m3 (37) | 10.9 μg/m3 (45) | 45.0 | |
| March 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 49.0 μg/m3 (45) | 9.9 μg/m3 (41) | 45.0 | |
| March 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 6.7 μg/m3 (28) | 28.0 | |
| March 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 7.5 μg/m3 (31) | 31.0 | |
| March 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (27) | 8.5 μg/m3 (35) | 35.0 | |
| March 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 16.0 μg/m3 (15) | 6.5 μg/m3 (27) | 27.0 | |
| March 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 20.0 μg/m3 (18) | 9.8 μg/m3 (41) | 41.0 | |
| March 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 μg/m3 (20) | 8.9 μg/m3 (37) | 37.0 | |
| March 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 μg/m3 (31) | 13.5 μg/m3 (53) | 53.0 | |
| March 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 μg/m3 (31) | 12.9 μg/m3 (52) | 52.0 | |
| March 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 20.0 μg/m3 (18) | 8.7 μg/m3 (36) | 36.0 | |
| March 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 13.0 μg/m3 (12) | 6.6 μg/m3 (28) | 28.0 | |
| March 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| March 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 3.5 μg/m3 (15) | 15.0 | |
| March 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | 0.5 μg/m3 (2) | 3.0 | |
| March 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 5.0 μg/m3 (5) | 1.3 μg/m3 (5) | 5.0 | |
| March 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 2.7 μg/m3 (11) | 11.0 | |
| March 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 5.0 μg/m3 (5) | 2.6 μg/m3 (11) | 11.0 | |
| March 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 3.5 μg/m3 (15) | 15.0 | |
| March 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 4.4 μg/m3 (18) | 18.0 | |
| March 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 8.0 μg/m3 (33) | 33.0 | |
| March 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | 9.7 μg/m3 (40) | 40.0 | |
| March 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 3.3 μg/m3 (14) | 14.0 | |
| March 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 4.0 μg/m3 (4) | 1.2 μg/m3 (5) | 5.0 | |
| March 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | 1.2 μg/m3 (5) | 5.0 | |
| March 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | 1.8 μg/m3 (8) | 8.0 | |
| March 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | 2.1 μg/m3 (9) | 9.0 | |
| March 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 3.0 μg/m3 (3) | 1.6 μg/m3 (7) | 7.0 | |
| March 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 3.0 μg/m3 (3) | 1.6 μg/m3 (7) | 7.0 | |
| March 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 2.8 μg/m3 (12) | 12.0 | |
| March 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 2.6 μg/m3 (11) | 11.0 | |
| March 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.0 μg/m3 (7) | 2.9 μg/m3 (12) | 12.0 | |
| March 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 4.6 μg/m3 (19) | 19.0 | |
| March 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 4.5 μg/m3 (19) | 19.0 | |
| March 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (13) | 4.5 μg/m3 (19) | 19.0 | |
| March 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 3.9 μg/m3 (16) | 16.0 | |
| March 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 9.0 μg/m3 (8) | 3.1 μg/m3 (13) | 13.0 | |
| March 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 4.5 μg/m3 (19) | 19.0 | |
| March 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 3.3 μg/m3 (14) | 14.0 | |
| March 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (14) | 2.9 μg/m3 (12) | 14.0 | |
| March 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 4.7 μg/m3 (20) | 20.0 | |
| March 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 3.8 μg/m3 (16) | 16.0 | |
| March 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 17.0 μg/m3 (15) | 4.8 μg/m3 (20) | 20.0 | |
| March 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (13) | 2.5 μg/m3 (10) | 13.0 | |
| March 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 1.1 μg/m3 (5) | 11.0 | |
| March 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | -0.1 μg/m3 (0) | 10.0 | |
| March 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 μg/m3 (17) | 5.7 μg/m3 (24) | 24.0 | |
| March 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 μg/m3 (19) | 2.0 μg/m3 (8) | 19.0 | |
| March 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (22) | 4.4 μg/m3 (18) | 22.0 | |
| March 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 μg/m3 (41) | 9.1 μg/m3 (38) | 41.0 | |
| March 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 μg/m3 (34) | 7.6 μg/m3 (32) | 34.0 | |
| March 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 μg/m3 (26) | 5.4 μg/m3 (23) | 26.0 | |
| March 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 5.3 μg/m3 (22) | 25.0 | |
| March 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (23) | 5.8 μg/m3 (24) | 24.0 | |
| March 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 μg/m3 (24) | 5.3 μg/m3 (22) | 24.0 | |
| March 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 μg/m3 (26) | 5.3 μg/m3 (22) | 26.0 | |
| March 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (27) | 4.6 μg/m3 (19) | 27.0 | |
| March 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 μg/m3 (26) | 4.7 μg/m3 (20) | 26.0 | |
| March 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 μg/m3 (24) | 3.2 μg/m3 (13) | 24.0 | |
| March 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 26.0 μg/m3 (24) | 4.1 μg/m3 (17) | 24.0 | |
| March 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (27) | 6.0 μg/m3 (25) | 27.0 | |
| March 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 20.0 μg/m3 (18) | 3.8 μg/m3 (16) | 18.0 | |
| March 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 17.0 μg/m3 (15) | 3.8 μg/m3 (16) | 16.0 | |
| March 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (13) | 2.4 μg/m3 (10) | 13.0 | |
| March 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 9.0 μg/m3 (8) | 0.0 μg/m3 (0) | 8.0 | |
| March 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 1.0 μg/m3 (4) | 11.0 | |
| March 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (14) | 4.0 μg/m3 (17) | 17.0 | |
| March 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 16.0 μg/m3 (15) | 5.8 μg/m3 (24) | 24.0 | |
| March 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (14) | 6.2 μg/m3 (26) | 26.0 | |
| March 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | -0.9 μg/m3 (0) | 10.0 | |
| March 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 μg/m3 (34) | 9.1 μg/m3 (38) | 38.0 | |
| March 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 μg/m3 (49) | 14.7 μg/m3 (56) | 56.0 | |
| March 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 77.0 μg/m3 (61) | 18.3 μg/m3 (63) | 63.0 | |
| March 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 94.0 μg/m3 (70) | 20.1 μg/m3 (67) | 70.0 | |
| March 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 79.0 μg/m3 (62) | 16.1 μg/m3 (59) | 62.0 | |
| March 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | 43.0 μg/m3 (39) | 12.7 μg/m3 (51) | 51.0 | |
| March 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 μg/m3 (31) | 12.4 μg/m3 (51) | 51.0 | |
| March 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 μg/m3 (23) | 11.6 μg/m3 (48) | 48.0 | |
| March 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 8.4 μg/m3 (35) | 35.0 | |
| March 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 μg/m3 (17) | 8.5 μg/m3 (35) | 35.0 | |
| March 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 31.0 μg/m3 (28) | 9.5 μg/m3 (40) | 40.0 | |
| March 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 μg/m3 (21) | 7.3 μg/m3 (30) | 30.0 | |
| March 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 μg/m3 (20) | 5.7 μg/m3 (24) | 24.0 | |
| March 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 16.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| March 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 11.0 μg/m3 (10) | 2.9 μg/m3 (12) | 12.0 | |
| March 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.0 μg/m3 (7) | 1.8 μg/m3 (8) | 8.0 | |
| March 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 4.0 μg/m3 (4) | 0.9 μg/m3 (4) | 4.0 | |
| March 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 2.6 μg/m3 (11) | 11.0 | |
| March 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 9.0 μg/m3 (8) | 3.7 μg/m3 (15) | 15.0 | |
| March 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 12.0 | |
| March 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (11) | 3.6 μg/m3 (15) | 15.0 | |
| March 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 12.0 | |
| March 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.0 μg/m3 (7) | 3.3 μg/m3 (14) | 14.0 | |
| March 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 2.0 μg/m3 (2) | -0.7 μg/m3 (0) | 2.0 | |
| March 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 4.0 μg/m3 (4) | -0.6 μg/m3 (0) | 4.0 | |
| March 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| March 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| March 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 μg/m3 (50) | 9.9 μg/m3 (41) | 50.0 | |
| March 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 μg/m3 (36) | 9.0 μg/m3 (38) | 38.0 | |
| March 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 μg/m3 (25) | 5.4 μg/m3 (23) | 25.0 | |
| March 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 4.1 μg/m3 (17) | 17.0 | |
| March 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.0 μg/m3 (8) | 2.4 μg/m3 (10) | 10.0 | |
| March 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.0 μg/m3 (7) | 2.3 μg/m3 (10) | 10.0 | |
| March 14, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 6.0 μg/m3 (5) | 1.9 μg/m3 (8) | 8.0 | |
| March 14, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 2.7 μg/m3 (11) | 11.0 | |
| March 14, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.0 μg/m3 (5) | 1.4 μg/m3 (6) | 6.0 | |
| March 14, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 1.9 μg/m3 (8) | 8.0 | |
| March 14, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 2.1 μg/m3 (9) | 9.0 | |
| March 14, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 8.0 | |
| March 14, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 1.1 μg/m3 (5) | 6.0 | |
| March 14, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 7.0 μg/m3 (6) | 1.1 μg/m3 (5) | 6.0 | |
| March 14, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (9) | 0.5 μg/m3 (2) | 9.0 | |
| March 13, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (16) | 0.9 μg/m3 (4) | 16.0 | |
| March 13, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 65.0 μg/m3 (55) | 1.3 μg/m3 (5) | 55.0 | |
| March 13, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 μg/m3 (47) | 0.9 μg/m3 (4) | 47.0 | |
| March 13, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 μg/m3 (42) | 5.5 μg/m3 (23) | 42.0 |