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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June 15, 2021, 10 a.m. | 77.9 ppb (77) | 52.7 ppb (50) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | 11.0 μg/m3 (46) | 50.0 | |
| June 15, 2021, 9 a.m. | 73.9 ppb (73) | 53.0 ppb (50) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 4.0 μg/m3 (17) | 50.0 | |
| June 15, 2021, 8 a.m. | 61.4 ppb (59) | 38.2 ppb (37) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 0.39 ppb (5) | N/A | 3.0 μg/m3 (13) | 37.0 | |
| June 15, 2021, 7 a.m. | 48.9 ppb (47) | 29.1 ppb (28) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | 4.0 μg/m3 (17) | 28.0 | |
| June 15, 2021, 6 a.m. | 23.7 ppb (23) | 13.3 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 15, 2021, 5 a.m. | 28.5 ppb (27) | 15.7 ppb (15) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 15, 2021, 4 a.m. | 26.9 ppb (26) | 13.4 ppb (13) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 15, 2021, 3 a.m. | 29.1 ppb (28) | 14.5 ppb (14) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.4 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 15, 2021, 2 a.m. | 36.4 ppb (35) | 21.5 ppb (21) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 15, 2021, 1 a.m. | 33.0 ppb (32) | 18.0 ppb (17) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 15, 2021, midnight | 33.3 ppb (32) | 16.9 ppb (16) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 14, 2021, 11 p.m. | 35.3 ppb (34) | 19.4 ppb (19) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 14, 2021, 10 p.m. | 38.7 ppb (37) | 21.7 ppb (21) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 14, 2021, 9 p.m. | 46.2 ppb (44) | 22.6 ppb (22) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 14, 2021, 8 p.m. | 67.1 ppb (65) | 38.5 ppb (37) | N/A | 29.0 ppb (28) | N/A | N/A | N/A | 0.85 ppb (10) | N/A | 7.0 μg/m3 (30) | 37.0 | |
| June 14, 2021, 7 p.m. | 52.4 ppb (50) | 26.9 ppb (26) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 14, 2021, 6 p.m. | 57.1 ppb (55) | 30.4 ppb (29) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 14, 2021, 5 p.m. | 69.9 ppb (68) | 42.8 ppb (41) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 5.0 μg/m3 (21) | 41.0 | |
| June 14, 2021, 4 p.m. | 66.1 ppb (64) | 38.4 ppb (37) | N/A | 28.0 ppb (27) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| June 14, 2021, 3 p.m. | 61.5 ppb (59) | 36.7 ppb (35) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 5.0 μg/m3 (21) | 35.0 | |
| June 14, 2021, 2 p.m. | 50.9 ppb (49) | 31.7 ppb (30) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| June 14, 2021, 1 p.m. | 68.5 ppb (67) | 41.5 ppb (40) | N/A | 27.0 ppb (26) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 40.0 | |
| June 14, 2021, noon | 45.1 ppb (43) | 30.7 ppb (29) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 14, 2021, 11 a.m. | 50.1 ppb (48) | 32.1 ppb (31) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 14, 2021, 10 a.m. | 80.0 ppb (79) | 51.0 ppb (49) | N/A | 29.0 ppb (28) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 7.0 μg/m3 (30) | 49.0 | |
| June 14, 2021, 9 a.m. | 59.1 ppb (57) | 40.3 ppb (39) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 8.0 μg/m3 (34) | 39.0 | |
| June 14, 2021, 8 a.m. | 56.7 ppb (54) | 35.3 ppb (34) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 14, 2021, 7 a.m. | 39.1 ppb (37) | 17.9 ppb (17) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.31 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 14, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 14, 2021, 4 a.m. | 22.3 ppb (22) | 11.8 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 14, 2021, 3 a.m. | 27.0 ppb (26) | 13.8 ppb (14) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 14, 2021, 2 a.m. | 32.6 ppb (31) | 17.1 ppb (17) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 14, 2021, 1 a.m. | 24.4 ppb (24) | 10.0 ppb (10) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 14, 2021, midnight | 24.2 ppb (23) | 9.9 ppb (10) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 11 p.m. | 24.0 ppb (23) | 11.3 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 10 p.m. | 26.3 ppb (25) | 12.1 ppb (12) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 9 p.m. | 26.1 ppb (25) | 12.8 ppb (13) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 8 p.m. | 21.6 ppb (21) | 9.5 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 7 p.m. | 27.6 ppb (27) | 15.4 ppb (15) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 6 p.m. | 29.3 ppb (28) | 17.3 ppb (17) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 5 p.m. | 29.9 ppb (29) | 16.7 ppb (16) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 4 p.m. | 26.3 ppb (25) | 14.9 ppb (15) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 3 p.m. | 23.6 ppb (23) | 11.8 ppb (12) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 2 p.m. | 23.0 ppb (22) | 12.6 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 13, 2021, 1 p.m. | 16.2 ppb (16) | 8.6 ppb (9) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 13, 2021, noon | 21.2 ppb (20) | 10.7 ppb (11) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 13, 2021, 11 a.m. | 25.0 ppb (24) | 14.2 ppb (14) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 10 a.m. | 22.4 ppb (22) | 10.9 ppb (11) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 13, 2021, 9 a.m. | 25.4 ppb (24) | 12.3 ppb (12) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 13, 2021, 8 a.m. | 20.5 ppb (20) | 11.6 ppb (11) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.38 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 13, 2021, 7 a.m. | 17.7 ppb (17) | 8.2 ppb (8) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.48 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 13, 2021, 6 a.m. | 27.0 ppb (26) | 14.1 ppb (14) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.71 ppb (8) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 13, 2021, 5 a.m. | 31.2 ppb (30) | 16.3 ppb (16) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.81 ppb (10) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 13, 2021, 4 a.m. | 31.8 ppb (30) | 16.8 ppb (16) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.87 ppb (11) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 13, 2021, 3 a.m. | 31.9 ppb (31) | 16.6 ppb (16) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.68 ppb (8) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 13, 2021, 2 a.m. | 32.5 ppb (31) | 18.4 ppb (18) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 13, 2021, 1 a.m. | 32.5 ppb (31) | 18.0 ppb (17) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 13, 2021, midnight | 32.9 ppb (32) | 17.4 ppb (17) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.77 ppb (10) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 12, 2021, 11 p.m. | 29.2 ppb (28) | 14.3 ppb (14) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 12, 2021, 10 p.m. | 16.7 ppb (16) | 7.5 ppb (8) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 9 p.m. | 21.0 ppb (20) | 11.8 ppb (12) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 12, 2021, 8 p.m. | 23.3 ppb (22) | 10.7 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.4 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 12, 2021, 7 p.m. | 33.8 ppb (32) | 19.7 ppb (19) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 6 p.m. | 30.9 ppb (30) | 20.0 ppb (19) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 5 p.m. | 15.1 ppb (15) | 8.3 ppb (8) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 12, 2021, 4 p.m. | 20.8 ppb (20) | 11.8 ppb (12) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 12, 2021, 3 p.m. | 19.9 ppb (19) | 12.4 ppb (12) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 2 p.m. | 40.5 ppb (39) | 22.0 ppb (21) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 3.0 μg/m3 (13) | 21.0 | |
| June 12, 2021, 1 p.m. | 17.2 ppb (17) | 9.3 ppb (9) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| June 12, 2021, noon | 19.8 ppb (19) | 9.8 ppb (10) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 11 a.m. | 34.7 ppb (33) | 21.7 ppb (21) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 10 a.m. | 9.8 ppb (10) | 3.6 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 9 a.m. | 10.8 ppb (11) | 4.4 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 12, 2021, 8 a.m. | 10.4 ppb (10) | 4.7 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 12, 2021, 7 a.m. | 8.4 ppb (8) | 4.5 ppb (5) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 2.0 μg/m3 (9) | 9.0 | |
| June 12, 2021, 6 a.m. | 9.4 ppb (9) | 4.0 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| June 12, 2021, 5 a.m. | 5.8 ppb (6) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 12, 2021, 4 a.m. | 12.8 ppb (13) | 4.8 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.27 ppb (4) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 12, 2021, 3 a.m. | 23.2 ppb (22) | 12.7 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.49 ppb (6) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 12, 2021, 2 a.m. | 23.4 ppb (23) | 11.9 ppb (12) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 12, 2021, 1 a.m. | 26.2 ppb (25) | 13.6 ppb (13) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 12, 2021, midnight | 29.3 ppb (28) | 19.1 ppb (19) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.48 ppb (6) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 11, 2021, 11 p.m. | 22.5 ppb (22) | 12.5 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 11, 2021, 10 p.m. | 29.6 ppb (28) | 16.1 ppb (16) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 11, 2021, 9 p.m. | 35.7 ppb (34) | 21.6 ppb (21) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| June 11, 2021, 8 p.m. | 34.5 ppb (33) | 23.8 ppb (23) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.45 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 11, 2021, 7 p.m. | 35.8 ppb (34) | 22.7 ppb (22) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 11, 2021, 6 p.m. | 33.2 ppb (32) | 20.9 ppb (20) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.38 ppb (5) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 11, 2021, 5 p.m. | 25.9 ppb (25) | 12.0 ppb (12) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.27 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 11, 2021, 4 p.m. | 15.8 ppb (15) | 7.7 ppb (8) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 11, 2021, 3 p.m. | 43.7 ppb (42) | 25.2 ppb (24) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.4 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 11, 2021, 2 p.m. | 49.3 ppb (47) | 36.0 ppb (34) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 7.0 μg/m3 (30) | 34.0 | |
| June 11, 2021, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 11, 2021, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 11, 2021, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 11, 2021, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 11, 2021, 9 a.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 | |
| June 11, 2021, 8 a.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 | |
| June 11, 2021, 7 a.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 | |
| June 11, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 11, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 11, 2021, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 11, 2021, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 11, 2021, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| June 11, 2021, 1 a.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 | |
| June 11, 2021, midnight | 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 | |
| June 10, 2021, 11 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 | |
| June 10, 2021, 10 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 | |
| June 10, 2021, 9 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 | |
| June 10, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (5) | 5.0 | |
| June 10, 2021, 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 | |
| June 10, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -2.0 μg/m3 (0) | 0.0 | |
| June 10, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 3.0 | |
| June 10, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 10, 2021, 3 p.m. | 8.8 ppb (9) | 6.5 ppb (7) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| June 10, 2021, 2 p.m. | 9.3 ppb (9) | 5.6 ppb (6) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| June 10, 2021, 1 p.m. | 11.2 ppb (11) | 7.3 ppb (7) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| June 10, 2021, noon | 9.5 ppb (9) | 4.0 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 10, 2021, 11 a.m. | 18.0 ppb (17) | 7.7 ppb (8) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (4) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 10, 2021, 10 a.m. | 34.9 ppb (33) | 14.8 ppb (14) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 10, 2021, 9 a.m. | 37.7 ppb (36) | 12.6 ppb (12) | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 10, 2021, 8 a.m. | 56.9 ppb (55) | 25.9 ppb (25) | N/A | 31.0 ppb (30) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 30.0 | |
| June 10, 2021, 7 a.m. | 24.0 ppb (23) | 7.7 ppb (8) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 10, 2021, 6 a.m. | 23.4 ppb (23) | 6.5 ppb (7) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 10, 2021, 5 a.m. | 32.9 ppb (32) | 14.7 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.31 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| June 10, 2021, 4 a.m. | 20.9 ppb (20) | 8.9 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.38 ppb (5) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 10, 2021, 3 a.m. | 16.0 ppb (16) | 7.5 ppb (8) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| June 10, 2021, 2 a.m. | 33.3 ppb (32) | 16.3 ppb (16) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| June 10, 2021, 1 a.m. | 42.5 ppb (41) | 23.8 ppb (23) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.72 ppb (8) | N/A | 18.0 μg/m3 (64) | 64.0 | |
| June 10, 2021, midnight | 36.9 ppb (35) | 18.1 ppb (18) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.75 ppb (10) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| June 9, 2021, 11 p.m. | 38.2 ppb (37) | 20.0 ppb (19) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| June 9, 2021, 10 p.m. | 26.6 ppb (26) | 12.0 ppb (12) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.49 ppb (6) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| June 9, 2021, 9 p.m. | 32.0 ppb (31) | 16.6 ppb (16) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.65 ppb (8) | N/A | 19.0 μg/m3 (66) | 66.0 | |
| June 9, 2021, 8 p.m. | 22.1 ppb (21) | 10.6 ppb (10) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 22.0 μg/m3 (72) | 72.0 | |
| June 9, 2021, 7 p.m. | 37.7 ppb (36) | 21.6 ppb (21) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| June 9, 2021, 6 p.m. | 48.9 ppb (47) | 26.6 ppb (26) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.77 ppb (10) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 9, 2021, 5 p.m. | 31.6 ppb (30) | 19.0 ppb (18) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 5, 2021, 10 a.m. | 91.1 ppb (91) | 72.7 ppb (71) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 1.24 ppb (14) | N/A | 7.0 μg/m3 (30) | 71.0 | |
| June 5, 2021, 9 a.m. | 73.2 ppb (72) | 49.6 ppb (47) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 0.8 ppb (10) | N/A | 8.0 μg/m3 (34) | 47.0 | |
| June 5, 2021, 8 a.m. | 52.2 ppb (50) | 32.0 ppb (31) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.56 ppb (7) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 5, 2021, 7 a.m. | 28.1 ppb (27) | 12.1 ppb (12) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 5, 2021, 6 a.m. | 23.7 ppb (23) | 6.6 ppb (7) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.39 ppb (5) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 5, 2021, 5 a.m. | 30.6 ppb (29) | 13.6 ppb (13) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 5, 2021, 4 a.m. | 56.9 ppb (55) | 38.4 ppb (37) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.83 ppb (10) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| June 5, 2021, 3 a.m. | 37.8 ppb (36) | 23.1 ppb (22) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 5, 2021, 2 a.m. | 34.5 ppb (33) | 18.8 ppb (18) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| June 5, 2021, 1 a.m. | 48.5 ppb (46) | 24.2 ppb (23) | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 0.97 ppb (12) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 5, 2021, midnight | 47.3 ppb (45) | 25.3 ppb (24) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.84 ppb (10) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 4, 2021, 11 p.m. | 49.2 ppb (47) | 23.4 ppb (23) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | 0.84 ppb (10) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 4, 2021, 10 p.m. | 49.5 ppb (47) | 23.9 ppb (23) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | 0.83 ppb (10) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 4, 2021, 9 p.m. | 41.1 ppb (39) | 19.3 ppb (19) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.74 ppb (8) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 4, 2021, 8 p.m. | 19.0 ppb (18) | 8.1 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.39 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| June 4, 2021, 7 p.m. | 34.9 ppb (33) | 19.8 ppb (19) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| June 4, 2021, 6 p.m. | 44.5 ppb (42) | 23.4 ppb (23) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 0.57 ppb (7) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 4, 2021, 5 p.m. | 45.0 ppb (43) | 26.7 ppb (26) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| June 4, 2021, 4 p.m. | 41.7 ppb (40) | 26.2 ppb (25) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.47 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| June 4, 2021, 3 p.m. | 34.4 ppb (33) | 21.6 ppb (21) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| June 4, 2021, 2 p.m. | 51.7 ppb (49) | 38.2 ppb (37) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 4, 2021, 1 p.m. | 41.9 ppb (40) | 27.6 ppb (27) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| June 4, 2021, noon | 51.1 ppb (49) | 38.6 ppb (37) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 7.0 μg/m3 (30) | 37.0 | |
| June 4, 2021, 11 a.m. | 71.1 ppb (70) | 54.8 ppb (52) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 6.0 μg/m3 (25) | 52.0 | |
| June 4, 2021, 10 a.m. | 66.0 ppb (64) | 52.3 ppb (50) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 7.0 μg/m3 (30) | 50.0 | |
| June 4, 2021, 9 a.m. | 47.7 ppb (45) | 37.5 ppb (36) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 4.0 μg/m3 (17) | 36.0 | |
| June 4, 2021, 8 a.m. | 25.7 ppb (25) | 17.2 ppb (17) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 2.0 μg/m3 (9) | 17.0 | |
| June 4, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| June 4, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| June 4, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 |