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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 23, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 8.7 μg/m3 (36) | 36.0 | |
| May 23, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.0 μg/m3 (7) | 4.2 μg/m3 (18) | 18.0 | |
| May 23, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 9.0 μg/m3 (8) | 0.7 μg/m3 (3) | 8.0 | |
| May 23, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 7.0 μg/m3 (6) | 0.2 μg/m3 (1) | 6.0 | |
| May 23, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.0 μg/m3 (5) | 2.5 μg/m3 (10) | 10.0 | |
| May 23, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 4.0 μg/m3 (4) | 2.4 μg/m3 (10) | 10.0 | |
| May 23, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 7.0 μg/m3 (6) | 2.1 μg/m3 (9) | 9.0 | |
| May 23, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 0.5 μg/m3 (2) | 9.0 | |
| May 23, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 23, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 23, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 6.8 μg/m3 (28) | 28.0 | |
| May 23, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 3.7 μg/m3 (15) | 15.0 | |
| May 23, 2019, 11 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) | 1.6 μg/m3 (7) | 7.0 | |
| May 23, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 2.6 μg/m3 (11) | 11.0 | |
| May 23, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 3.5 μg/m3 (15) | 15.0 | |
| May 23, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 5.2 μg/m3 (22) | 24.0 | |
| May 23, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.8 μg/m3 (16) | 16.0 | |
| May 23, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| May 23, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 2.4 μg/m3 (10) | 16.0 | |
| May 23, 2019, 4 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) | 3.0 μg/m3 (12) | 14.0 | |
| May 23, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 3.9 μg/m3 (16) | 16.0 | |
| May 23, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 1.5 μg/m3 (6) | 9.0 | |
| May 23, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 2.9 μg/m3 (12) | 12.0 | |
| May 23, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 7.7 μg/m3 (32) | 32.0 | |
| May 22, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 1.8 μg/m3 (8) | 16.0 | |
| May 22, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 2.7 μg/m3 (11) | 25.0 | |
| May 22, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 0.0 μg/m3 (0) | 24.0 | |
| May 22, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 3.4 μg/m3 (14) | 23.0 | |
| May 22, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 9.1 μg/m3 (38) | 38.0 | |
| May 22, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 7.2 μg/m3 (30) | 30.0 | |
| May 22, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 4.4 μg/m3 (18) | 24.0 | |
| May 22, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 2.1 μg/m3 (9) | 24.0 | |
| May 22, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 μg/m3 (35) | 7.3 μg/m3 (30) | 35.0 | |
| May 22, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 51.0 μg/m3 (46) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 66.0 μg/m3 (56) | 12.1 μg/m3 (50) | 56.0 | |
| May 22, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 68.0 μg/m3 (56) | 13.2 μg/m3 (53) | 56.0 | |
| May 22, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 μg/m3 (49) | 13.1 μg/m3 (52) | 52.0 | |
| May 22, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 μg/m3 (45) | 9.9 μg/m3 (41) | 45.0 | |
| May 22, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 58.0 μg/m3 (52) | 9.8 μg/m3 (41) | 52.0 | |
| May 22, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 70.0 μg/m3 (58) | 12.5 μg/m3 (51) | 58.0 | |
| May 22, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 82.0 μg/m3 (64) | 14.3 μg/m3 (55) | 64.0 | |
| May 22, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 68.0 μg/m3 (56) | 13.2 μg/m3 (53) | 56.0 | |
| May 22, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 62.0 μg/m3 (54) | 11.7 μg/m3 (49) | 54.0 | |
| May 22, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 μg/m3 (38) | 6.3 μg/m3 (26) | 38.0 | |
| May 22, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 μg/m3 (35) | 5.2 μg/m3 (22) | 35.0 | |
| May 22, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 43.0 μg/m3 (39) | 3.7 μg/m3 (15) | 39.0 | |
| May 22, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 μg/m3 (35) | 3.3 μg/m3 (14) | 35.0 | |
| May 22, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 109.0 μg/m3 (77) | 6.8 μg/m3 (28) | 77.0 | |
| May 21, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 129.0 μg/m3 (87) | 6.7 μg/m3 (28) | 87.0 | |
| May 21, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 75.0 μg/m3 (60) | 0.9 μg/m3 (4) | 60.0 | |
| May 21, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 81.0 μg/m3 (63) | 6.4 μg/m3 (27) | 63.0 | |
| May 21, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 56.0 μg/m3 (50) | 9.7 μg/m3 (40) | 50.0 | |
| May 21, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.0 μg/m3 (22) | 2.1 μg/m3 (9) | 22.0 | |
| May 21, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 1.5 μg/m3 (6) | 18.0 | |
| May 21, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 5.1 μg/m3 (21) | 23.0 | |
| May 21, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.0 μg/m3 (29) | 7.2 μg/m3 (30) | 30.0 | |
| May 21, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (31) | 3.7 μg/m3 (15) | 31.0 | |
| May 21, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 μg/m3 (45) | 7.1 μg/m3 (30) | 45.0 | |
| May 21, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 μg/m3 (25) | 4.8 μg/m3 (20) | 25.0 | |
| May 21, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 3.7 μg/m3 (15) | 15.0 | |
| May 21, 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) | 3.6 μg/m3 (15) | 15.0 | |
| May 21, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 5.3 μg/m3 (22) | 22.0 | |
| May 21, 2019, 9 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) | 3.7 μg/m3 (15) | 15.0 | |
| May 21, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 2.7 μg/m3 (11) | 17.0 | |
| May 21, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.0 μg/m3 (22) | 4.5 μg/m3 (19) | 22.0 | |
| May 21, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.6 μg/m3 (15) | 16.0 | |
| May 21, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 3.8 μg/m3 (16) | 16.0 | |
| May 21, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 0.5 μg/m3 (2) | 11.0 | |
| May 21, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 1.4 μg/m3 (6) | 9.0 | |
| May 21, 2019, 1 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 (0) | 7.0 | |
| May 21, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 1.9 μg/m3 (8) | 17.0 | |
| May 20, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 67.0 μg/m3 (56) | 5.1 μg/m3 (21) | 56.0 | |
| May 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 89.0 μg/m3 (67) | 7.2 μg/m3 (30) | 67.0 | |
| May 20, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 80.0 μg/m3 (62) | 7.9 μg/m3 (33) | 62.0 | |
| May 20, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 80.0 μg/m3 (62) | 7.0 μg/m3 (29) | 62.0 | |
| May 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 2.3 μg/m3 (10) | 23.0 | |
| May 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 2.2 μg/m3 (9) | 19.0 | |
| May 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 5.4 μg/m3 (23) | 26.0 | |
| May 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 41.0 μg/m3 (37) | 4.9 μg/m3 (20) | 37.0 | |
| May 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 44.0 μg/m3 (40) | 4.7 μg/m3 (20) | 40.0 | |
| May 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 53.0 μg/m3 (48) | 5.7 μg/m3 (24) | 48.0 | |
| May 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 μg/m3 (49) | 5.5 μg/m3 (23) | 49.0 | |
| May 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.0 μg/m3 (29) | 5.6 μg/m3 (23) | 29.0 | |
| May 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 4.8 μg/m3 (20) | 20.0 | |
| May 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 5.4 μg/m3 (23) | 23.0 | |
| May 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 3.6 μg/m3 (15) | 17.0 | |
| May 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 25.0 μg/m3 (23) | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.7 μg/m3 (15) | 16.0 | |
| May 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 3.9 μg/m3 (16) | 18.0 | |
| May 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 3.2 μg/m3 (13) | 16.0 | |
| May 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 3.0 μg/m3 (12) | 12.0 | |
| May 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 0.6 μg/m3 (2) | 11.0 | |
| May 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 6.7 μg/m3 (28) | 28.0 | |
| May 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 33.0 μg/m3 (30) | 9.4 μg/m3 (39) | 39.0 | |
| May 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 5.3 μg/m3 (22) | 22.0 | |
| May 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 4.1 μg/m3 (17) | 21.0 | |
| May 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 3.7 μg/m3 (15) | 15.0 | |
| May 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 2.9 μg/m3 (12) | 13.0 | |
| May 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 3.3 μg/m3 (14) | 14.0 | |
| May 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 2.8 μg/m3 (12) | 12.0 | |
| May 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 5.4 μg/m3 (23) | 23.0 | |
| May 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 20.0 μg/m3 (18) | 7.9 μg/m3 (33) | 33.0 | |
| May 19, 2019, 3 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) | 7.3 μg/m3 (30) | 30.0 | |
| May 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.0 μg/m3 (22) | 8.1 μg/m3 (34) | 34.0 | |
| May 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 6.9 μg/m3 (29) | 29.0 | |
| May 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| May 19, 2019, 11 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) | 5.4 μg/m3 (23) | 23.0 | |
| May 19, 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) | 4.4 μg/m3 (18) | 18.0 | |
| May 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 10.0 μg/m3 (9) | 3.7 μg/m3 (15) | 15.0 | |
| May 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 3.6 μg/m3 (15) | 15.0 | |
| May 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 24.0 μg/m3 (22) | 7.5 μg/m3 (31) | 31.0 | |
| May 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 9.5 μg/m3 (40) | 40.0 | |
| May 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 6.4 μg/m3 (27) | 27.0 | |
| May 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 2.8 μg/m3 (12) | 12.0 | |
| May 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 7.0 μg/m3 (6) | 1.5 μg/m3 (6) | 6.0 | |
| May 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 2.0 μg/m3 (2) | -3.2 μg/m3 (0) | 2.0 | |
| May 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 12.0 μg/m3 (11) | 5.5 μg/m3 (23) | 23.0 | |
| May 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 8.6 μg/m3 (36) | 36.0 | |
| May 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 7.3 μg/m3 (30) | 30.0 | |
| May 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 1.0 μg/m3 (1) | -1.7 μg/m3 (0) | 1.0 | |
| May 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 3.0 μg/m3 (3) | -0.2 μg/m3 (0) | 3.0 | |
| May 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 6.0 μg/m3 (5) | -0.9 μg/m3 (0) | 5.0 | |
| May 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 14.0 μg/m3 (13) | 0.7 μg/m3 (3) | 13.0 | |
| May 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 6.8 μg/m3 (28) | 28.0 | |
| May 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 40.0 μg/m3 (36) | 12.4 μg/m3 (51) | 51.0 | |
| May 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 66.0 μg/m3 (56) | 12.7 μg/m3 (51) | 56.0 | |
| May 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 64.0 μg/m3 (54) | 9.4 μg/m3 (39) | 54.0 | |
| May 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 62.0 μg/m3 (54) | 8.9 μg/m3 (37) | 54.0 | |
| May 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 27.0 μg/m3 (25) | 6.8 μg/m3 (28) | 28.0 | |
| May 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 32.0 μg/m3 (29) | 6.8 μg/m3 (28) | 29.0 | |
| May 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 26.0 μg/m3 (24) | 9.0 μg/m3 (38) | 38.0 | |
| May 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 21.0 μg/m3 (19) | 7.6 μg/m3 (32) | 32.0 | |
| May 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 4.7 μg/m3 (20) | 20.0 | |
| May 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 6.1 μg/m3 (25) | 25.0 | |
| May 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 13.0 μg/m3 (12) | 4.1 μg/m3 (17) | 17.0 | |
| May 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 12.0 | |
| May 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 19.0 μg/m3 (17) | 2.2 μg/m3 (9) | 17.0 | |
| May 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 1.5 μg/m3 (6) | 15.0 | |
| May 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 10.5 μg/m3 (44) | 44.0 | |
| May 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 10.6 μg/m3 (44) | 44.0 | |
| May 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 17.0 μg/m3 (15) | 8.4 μg/m3 (35) | 35.0 | |
| May 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 16.0 μg/m3 (15) | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 15.0 μg/m3 (14) | 0.9 μg/m3 (4) | 14.0 | |
| May 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 18.0 μg/m3 (16) | 2.0 μg/m3 (8) | 16.0 | |
| May 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 22.0 μg/m3 (20) | 2.3 μg/m3 (10) | 20.0 | |
| May 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 23.0 μg/m3 (21) | 0.1 μg/m3 (0) | 21.0 | |
| May 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (31) | 3.9 μg/m3 (16) | 31.0 | |
| May 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 μg/m3 (34) | 7.1 μg/m3 (30) | 34.0 | |
| May 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 31.0 μg/m3 (28) | 7.5 μg/m3 (31) | 31.0 | |
| May 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 29.0 μg/m3 (26) | 5.8 μg/m3 (24) | 26.0 | |
| May 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 μg/m3 (35) | 9.3 μg/m3 (39) | 39.0 | |
| May 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 51.0 μg/m3 (46) | 8.4 μg/m3 (35) | 46.0 | |
| May 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 44.0 μg/m3 (40) | 7.4 μg/m3 (31) | 40.0 | |
| May 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 53.0 μg/m3 (48) | 10.4 μg/m3 (43) | 48.0 | |
| May 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 61.0 μg/m3 (53) | 9.0 μg/m3 (38) | 53.0 | |
| May 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 80.0 μg/m3 (62) | 9.0 μg/m3 (38) | 62.0 | |
| May 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 65.0 μg/m3 (55) | 7.6 μg/m3 (32) | 55.0 | |
| May 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 104.0 μg/m3 (74) | 8.1 μg/m3 (34) | 74.0 | |
| May 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 86.0 μg/m3 (66) | 9.4 μg/m3 (39) | 66.0 | |
| May 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 72.0 μg/m3 (58) | 13.1 μg/m3 (52) | 58.0 | |
| May 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 59.0 μg/m3 (52) | 10.6 μg/m3 (44) | 52.0 | |
| May 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 μg/m3 (38) | 4.6 μg/m3 (19) | 38.0 | |
| May 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 μg/m3 (35) | 2.7 μg/m3 (11) | 35.0 | |
| May 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 57.0 μg/m3 (51) | 4.8 μg/m3 (20) | 51.0 | |
| May 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 52.0 μg/m3 (47) | 8.3 μg/m3 (35) | 47.0 |