Providence (Downtown) RI, US: 41.829495, -71.417457
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 9, 2020, 5 p.m. | 10.6 ppb (10) | 3.9 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| July 9, 2020, 4 p.m. | 19.1 ppb (18) | 8.0 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| July 9, 2020, 3 p.m. | 28.8 ppb (27) | 16.0 ppb (15) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| July 9, 2020, 2 p.m. | 40.0 ppb (37) | 22.9 ppb (21) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 9, 2020, 1 p.m. | 52.9 ppb (49) | 35.0 ppb (32) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 9, 2020, noon | 51.4 ppb (48) | 33.5 ppb (31) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 9, 2020, 11 a.m. | 51.6 ppb (48) | 32.6 ppb (30) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| July 9, 2020, 10 a.m. | 61.4 ppb (58) | 45.0 ppb (42) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 9, 2020, 9 a.m. | 39.1 ppb (36) | 24.6 ppb (23) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 9, 2020, 8 a.m. | 34.5 ppb (32) | 21.6 ppb (20) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 9, 2020, 7 a.m. | 22.7 ppb (21) | 15.4 ppb (14) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 9, 2020, 6 a.m. | 18.0 ppb (17) | 10.9 ppb (10) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 9, 2020, 5 a.m. | 18.3 ppb (17) | 10.8 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 9, 2020, 4 a.m. | 16.1 ppb (15) | 9.4 ppb (9) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 9, 2020, 3 a.m. | 18.9 ppb (18) | 10.7 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 9, 2020, 2 a.m. | 21.1 ppb (20) | 12.5 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 9, 2020, 1 a.m. | 22.3 ppb (21) | 15.4 ppb (14) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 9, 2020, midnight | 24.7 ppb (23) | 15.1 ppb (14) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 8, 2020, 11 p.m. | 30.3 ppb (28) | 19.3 ppb (18) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 8, 2020, 10 p.m. | 24.5 ppb (23) | 13.8 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 8, 2020, 9 p.m. | 24.2 ppb (22) | 15.3 ppb (14) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 8, 2020, 8 p.m. | 25.7 ppb (24) | 14.3 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 8, 2020, 7 p.m. | 29.1 ppb (27) | 13.3 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 8, 2020, 6 p.m. | 27.2 ppb (25) | 17.3 ppb (16) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 8, 2020, 5 p.m. | 36.6 ppb (34) | 22.5 ppb (21) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 8, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 8, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 8, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 8, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 8, 2020, noon | 47.7 ppb (44) | 30.6 ppb (28) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| July 8, 2020, 11 a.m. | 41.7 ppb (39) | 30.7 ppb (28) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| July 8, 2020, 10 a.m. | 52.4 ppb (49) | 38.7 ppb (36) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 36.0 | |
| July 8, 2020, 9 a.m. | 38.8 ppb (36) | 27.3 ppb (25) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 3.0 μg/m3 (12) | 25.0 | |
| July 8, 2020, 8 a.m. | 26.4 ppb (24) | 18.1 ppb (17) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.0 μg/m3 (8) | 17.0 | |
| July 8, 2020, 7 a.m. | 19.3 ppb (18) | 10.9 ppb (10) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 8, 2020, 6 a.m. | 12.7 ppb (12) | 5.2 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 8, 2020, 5 a.m. | 11.9 ppb (11) | 4.6 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 8, 2020, 4 a.m. | 14.3 ppb (13) | 8.0 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 8, 2020, 3 a.m. | 14.1 ppb (13) | 7.9 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 8, 2020, 2 a.m. | 15.9 ppb (15) | 10.0 ppb (9) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 8, 2020, 1 a.m. | 13.7 ppb (13) | 8.8 ppb (8) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 8, 2020, midnight | 14.8 ppb (14) | 8.3 ppb (8) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 7, 2020, 11 p.m. | 27.6 ppb (26) | 15.1 ppb (14) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 7, 2020, 10 p.m. | 22.6 ppb (21) | 14.2 ppb (13) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 7, 2020, 9 p.m. | 15.8 ppb (15) | 9.4 ppb (9) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 7, 2020, 8 p.m. | 6.7 ppb (6) | 2.7 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 7, 2020, 7 p.m. | 24.9 ppb (23) | 16.6 ppb (15) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 7, 2020, 6 p.m. | 23.2 ppb (21) | 12.6 ppb (12) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 7, 2020, 5 p.m. | 15.0 ppb (14) | 8.4 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 7, 2020, 4 p.m. | 11.7 ppb (11) | 5.3 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 7, 2020, 3 p.m. | 15.8 ppb (15) | 10.1 ppb (9) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 7, 2020, 2 p.m. | 23.8 ppb (22) | 14.9 ppb (14) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 14.0 | |
| July 7, 2020, 1 p.m. | 38.6 ppb (36) | 30.6 ppb (28) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 28.0 | |
| July 7, 2020, noon | 37.7 ppb (35) | 27.2 ppb (25) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 25.0 | |
| July 7, 2020, 11 a.m. | 25.0 ppb (23) | 14.2 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 13.0 | |
| July 7, 2020, 10 a.m. | 37.2 ppb (34) | 27.7 ppb (26) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 26.0 | |
| July 7, 2020, 9 a.m. | 36.6 ppb (34) | 23.1 ppb (21) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 21.0 | |
| July 7, 2020, 8 a.m. | 21.6 ppb (20) | 13.2 ppb (12) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 12.0 | |
| July 7, 2020, 7 a.m. | 14.3 ppb (13) | 10.1 ppb (9) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 9.0 | |
| July 7, 2020, 6 a.m. | 15.4 ppb (14) | 8.3 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 8.0 | |
| July 7, 2020, 5 a.m. | 12.9 ppb (12) | 7.0 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 6.0 | |
| July 7, 2020, 4 a.m. | 12.6 ppb (12) | 7.0 ppb (6) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 6.0 | |
| July 7, 2020, 3 a.m. | 11.7 ppb (11) | 6.3 ppb (6) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 6.0 | |
| July 7, 2020, 2 a.m. | 12.2 ppb (11) | 4.4 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 7.0 | |
| July 7, 2020, 1 a.m. | 9.7 ppb (9) | 2.6 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 6.0 | |
| July 7, 2020, midnight | 11.8 ppb (11) | 3.8 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 7.0 | |
| July 6, 2020, 11 p.m. | 11.4 ppb (11) | 5.3 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 6.0 | |
| July 6, 2020, 10 p.m. | 10.2 ppb (9) | 4.2 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 6.0 | |
| July 6, 2020, 9 p.m. | 5.4 ppb (5) | 2.8 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 3.0 | |
| July 6, 2020, 8 p.m. | 6.0 ppb (6) | 3.2 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 3.0 | |
| July 6, 2020, 7 p.m. | 6.5 ppb (6) | 2.8 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 4.0 | |
| July 6, 2020, 6 p.m. | 5.9 ppb (5) | 3.5 ppb (3) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 3.0 | |
| July 6, 2020, 5 p.m. | 8.2 ppb (8) | 4.3 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 4.0 | |
| July 6, 2020, 4 p.m. | 8.4 ppb (8) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 4.0 | |
| July 6, 2020, 3 p.m. | 14.7 ppb (14) | 8.5 ppb (8) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 8.0 | |
| July 6, 2020, 2 p.m. | 13.9 ppb (13) | 8.4 ppb (8) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 8.0 | |
| July 6, 2020, 1 p.m. | 24.3 ppb (23) | 17.1 ppb (16) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 16.0 | |
| July 6, 2020, noon | 42.3 ppb (39) | 31.5 ppb (29) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 29.0 | |
| July 6, 2020, 11 a.m. | 48.4 ppb (45) | 37.7 ppb (35) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 35.0 | |
| July 6, 2020, 10 a.m. | 52.5 ppb (49) | 38.5 ppb (36) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 36.0 | |
| July 6, 2020, 9 a.m. | 42.3 ppb (39) | 29.5 ppb (27) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | N/A | 27.0 | |
| July 6, 2020, 8 a.m. | 33.3 ppb (31) | 19.7 ppb (18) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 18.0 | |
| July 6, 2020, 7 a.m. | 20.7 ppb (19) | 13.7 ppb (13) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 13.0 | |
| July 6, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| July 6, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| July 6, 2020, 4 a.m. | 15.6 ppb (14) | 8.2 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 8.0 | |
| July 6, 2020, 3 a.m. | 15.5 ppb (14) | 8.0 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 7.0 | |
| July 6, 2020, 2 a.m. | 15.9 ppb (15) | 7.3 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 8.0 | |
| July 6, 2020, 1 a.m. | 17.6 ppb (16) | 8.5 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 8.0 | |
| July 6, 2020, midnight | 10.7 ppb (10) | 3.9 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 6.0 | |
| July 5, 2020, 11 p.m. | 6.3 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 4.0 | |
| July 5, 2020, 10 p.m. | 8.5 ppb (8) | 3.1 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 5.0 | |
| July 5, 2020, 9 p.m. | 7.3 ppb (7) | 2.6 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 5.0 | |
| July 5, 2020, 8 p.m. | 8.2 ppb (8) | 3.3 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 5.0 | |
| July 5, 2020, 7 p.m. | 8.5 ppb (8) | 3.6 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 5.0 | |
| July 5, 2020, 6 p.m. | 7.5 ppb (7) | 2.5 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 5.0 | |
| July 5, 2020, 5 p.m. | 9.5 ppb (9) | 3.5 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 6.0 | |
| July 5, 2020, 4 p.m. | 22.9 ppb (21) | 13.5 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 12.0 | |
| July 5, 2020, 3 p.m. | 22.2 ppb (21) | 13.0 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 12.0 | |
| July 5, 2020, 2 p.m. | 17.8 ppb (16) | 9.6 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 9.0 | |
| July 5, 2020, 1 p.m. | 14.5 ppb (13) | 8.6 ppb (8) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 8.0 | |
| July 5, 2020, noon | 16.7 ppb (15) | 10.3 ppb (10) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 10.0 | |
| July 5, 2020, 11 a.m. | 12.1 ppb (11) | 6.8 ppb (6) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 6.0 | |
| July 5, 2020, 10 a.m. | 10.9 ppb (10) | 5.4 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 6.0 | |
| July 5, 2020, 9 a.m. | 6.9 ppb (6) | 4.3 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 4.0 | |
| July 5, 2020, 8 a.m. | 5.1 ppb (5) | 2.4 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 3.0 | |
| July 5, 2020, 7 a.m. | 5.9 ppb (5) | 4.0 ppb (4) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 4.0 | |
| July 5, 2020, 6 a.m. | 9.1 ppb (8) | 4.8 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 4.0 | |
| July 5, 2020, 5 a.m. | 14.8 ppb (14) | 9.7 ppb (9) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 9.0 | |
| July 5, 2020, 4 a.m. | 21.1 ppb (20) | 11.2 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 10.0 | |
| July 5, 2020, 3 a.m. | 23.4 ppb (22) | 13.6 ppb (13) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 13.0 | |
| July 5, 2020, 2 a.m. | 30.0 ppb (28) | 15.1 ppb (14) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | N/A | 14.0 | |
| July 5, 2020, 1 a.m. | 22.5 ppb (21) | 11.3 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | N/A | 10.0 | |
| July 5, 2020, midnight | 21.8 ppb (20) | 11.5 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 11.0 | |
| July 4, 2020, 11 p.m. | 21.0 ppb (19) | 10.3 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | N/A | 10.0 | |
| July 4, 2020, 10 p.m. | 14.2 ppb (13) | 5.0 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 8.0 | |
| July 4, 2020, 9 p.m. | 5.5 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 4.0 | |
| July 4, 2020, 8 p.m. | 16.9 ppb (16) | 8.1 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 8.0 | |
| July 4, 2020, 7 p.m. | 17.1 ppb (16) | 9.0 ppb (8) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 6 p.m. | 20.1 ppb (19) | 13.4 ppb (12) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, 5 p.m. | 11.4 ppb (11) | 6.6 ppb (6) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, 4 p.m. | 10.3 ppb (10) | 6.9 ppb (6) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 4, 2020, 3 p.m. | 10.1 ppb (9) | 6.7 ppb (6) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, 2 p.m. | 24.4 ppb (23) | 15.4 ppb (14) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, 1 p.m. | 19.0 ppb (18) | 12.9 ppb (12) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 4, 2020, noon | 17.9 ppb (17) | 11.8 ppb (11) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 4, 2020, 11 a.m. | 5.9 ppb (5) | 2.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 10 a.m. | 10.0 ppb (9) | 5.0 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 4, 2020, 9 a.m. | 7.1 ppb (7) | 4.0 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 4, 2020, 8 a.m. | 8.0 ppb (7) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 4, 2020, 7 a.m. | 7.3 ppb (7) | 3.3 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 4, 2020, 6 a.m. | 6.2 ppb (6) | 2.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 4, 2020, 5 a.m. | 6.6 ppb (6) | 2.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 4 a.m. | 13.4 ppb (12) | 5.8 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 4, 2020, 3 a.m. | 12.0 ppb (11) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, 2 a.m. | 15.2 ppb (14) | 8.5 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, 1 a.m. | 15.0 ppb (14) | 7.5 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 4, 2020, midnight | 9.9 ppb (9) | 3.5 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 3, 2020, 11 p.m. | 6.6 ppb (6) | 2.6 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 3, 2020, 10 p.m. | 6.3 ppb (6) | 2.3 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 3, 2020, 9 p.m. | 12.7 ppb (12) | 8.3 ppb (8) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 3, 2020, 8 p.m. | 9.4 ppb (9) | 4.3 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 3, 2020, 7 p.m. | 9.2 ppb (9) | 5.3 ppb (5) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 3, 2020, 6 p.m. | 8.4 ppb (8) | 4.4 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 3, 2020, 5 p.m. | 6.2 ppb (6) | 3.6 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 3, 2020, 4 p.m. | 5.0 ppb (5) | 3.7 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 3, 2020, 3 p.m. | 6.1 ppb (6) | 4.0 ppb (4) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 3, 2020, 2 p.m. | 6.2 ppb (6) | 3.3 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 3, 2020, 1 p.m. | 5.5 ppb (5) | 1.9 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| July 3, 2020, noon | 13.3 ppb (12) | 7.1 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 17.0 μg/m3 (61) | 61.0 | |
| July 3, 2020, 11 a.m. | 38.1 ppb (35) | 22.9 ppb (21) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 3, 2020, 10 a.m. | 37.7 ppb (35) | 24.0 ppb (22) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| July 3, 2020, 9 a.m. | 38.4 ppb (36) | 24.5 ppb (23) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 3, 2020, 8 a.m. | 28.4 ppb (26) | 20.2 ppb (19) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| July 3, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 3, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (56) | 56.0 | |
| July 3, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (54) | 54.0 | |
| July 3, 2020, 3 a.m. | 27.9 ppb (26) | 12.9 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.78 ppb (9) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 3, 2020, 2 a.m. | 31.5 ppb (29) | 12.7 ppb (12) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.77 ppb (9) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| July 3, 2020, 1 a.m. | 36.6 ppb (34) | 14.1 ppb (13) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.88 ppb (10) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 3, 2020, midnight | 32.1 ppb (30) | 12.7 ppb (12) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.9 ppb (10) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 2, 2020, 11 p.m. | 33.0 ppb (31) | 14.0 ppb (13) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.87 ppb (10) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 2, 2020, 10 p.m. | 15.4 ppb (14) | 4.1 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 2, 2020, 9 p.m. | 15.4 ppb (14) | 4.4 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 2, 2020, 8 p.m. | 11.1 ppb (10) | 3.0 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 2, 2020, 7 p.m. | 13.3 ppb (12) | 4.2 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 2, 2020, 6 p.m. | 14.4 ppb (13) | 6.8 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 2, 2020, 5 p.m. | 28.0 ppb (26) | 13.4 ppb (12) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 9.0 μg/m3 (38) | 38.0 |