Boston (S Boston) MA, US: 42.325197, -71.056056
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 30, 2021, 6 p.m. | 16.0 ppb (16) | 5.0 ppb (5) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 30, 2021, 5 p.m. | 15.0 ppb (15) | 5.0 ppb (5) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 30, 2021, 4 p.m. | 22.0 ppb (21) | 8.0 ppb (8) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 30, 2021, 3 p.m. | 20.0 ppb (19) | 8.0 ppb (8) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 30, 2021, 2 p.m. | 18.0 ppb (17) | 7.0 ppb (7) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 30, 2021, 1 p.m. | 22.0 ppb (21) | 9.0 ppb (9) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 30, 2021, noon | 26.0 ppb (25) | 11.0 ppb (11) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 30, 2021, 11 a.m. | 32.0 ppb (31) | 15.0 ppb (15) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.13 ppb (2) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| July 30, 2021, 10 a.m. | 32.0 ppb (31) | 14.0 ppb (14) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 5.0 μg/m3 (21) | 31.0 | |
| July 30, 2021, 9 a.m. | 19.0 ppb (18) | 5.0 ppb (5) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 2.0 μg/m3 (9) | 18.0 | |
| July 30, 2021, 8 a.m. | 13.0 ppb (13) | 2.0 ppb (2) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| July 30, 2021, 7 a.m. | 18.0 ppb (17) | 2.0 ppb (2) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 30, 2021, 6 a.m. | 19.0 ppb (18) | 1.0 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 30, 2021, 5 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 30, 2021, 4 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 30, 2021, 3 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 30, 2021, 2 a.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 30, 2021, 1 a.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (13) | 13.0 | |
| July 30, 2021, midnight | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 29, 2021, 11 p.m. | 10.0 ppb (10) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 29, 2021, 10 p.m. | 10.0 ppb (10) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 9 p.m. | 12.0 ppb (12) | 4.0 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 8 p.m. | 12.0 ppb (12) | 4.0 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 29, 2021, 7 p.m. | 13.0 ppb (13) | 5.0 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 29, 2021, 6 p.m. | 12.0 ppb (12) | 4.0 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 29, 2021, 5 p.m. | 15.0 ppb (15) | 6.0 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 4 p.m. | 22.0 ppb (21) | 9.0 ppb (9) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 3 p.m. | 22.0 ppb (21) | 8.0 ppb (8) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 2 p.m. | 19.0 ppb (18) | 8.0 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 29, 2021, 1 p.m. | 24.0 ppb (23) | 11.0 ppb (11) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 29, 2021, noon | 25.0 ppb (24) | 12.0 ppb (12) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 29, 2021, 11 a.m. | 32.0 ppb (31) | 18.0 ppb (17) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 29, 2021, 10 a.m. | 32.0 ppb (31) | 18.0 ppb (17) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 9 a.m. | 20.0 ppb (19) | 8.0 ppb (8) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 8 a.m. | 13.0 ppb (13) | 4.0 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 7 a.m. | 10.0 ppb (10) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 29, 2021, 6 a.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 29, 2021, 5 a.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 29, 2021, 4 a.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.13 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 29, 2021, 3 a.m. | 19.0 ppb (18) | 6.0 ppb (6) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 29, 2021, 2 a.m. | 16.0 ppb (16) | 5.0 ppb (5) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 29, 2021, 1 a.m. | 17.0 ppb (17) | 4.0 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 29, 2021, midnight | 9.0 ppb (9) | 1.0 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 28, 2021, 11 p.m. | 8.0 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 28, 2021, 10 p.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 28, 2021, 9 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 28, 2021, 8 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 28, 2021, 7 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 28, 2021, 6 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 28, 2021, 5 p.m. | 7.0 ppb (7) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 28, 2021, 4 p.m. | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 28, 2021, 3 p.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 28, 2021, 2 p.m. | 10.0 ppb (10) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| July 28, 2021, 1 p.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 | |
| July 28, 2021, noon | 13.0 ppb (13) | 2.0 ppb (2) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | -0.03 ppb (0) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 11 a.m. | 11.0 ppb (11) | 2.0 ppb (2) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 28, 2021, 10 a.m. | 11.0 ppb (11) | 2.0 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 28, 2021, 9 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 28, 2021, 8 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 28, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 28, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 28, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 28, 2021, 1 a.m. | 12.0 ppb (12) | 1.0 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 28, 2021, midnight | 15.0 ppb (15) | 2.0 ppb (2) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.06 ppb (2) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 27, 2021, 11 p.m. | 13.0 ppb (13) | 1.0 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 19.0 μg/m3 (66) | 66.0 | |
| July 27, 2021, 10 p.m. | 13.0 ppb (13) | 1.0 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 20.0 μg/m3 (68) | 68.0 | |
| July 27, 2021, 9 p.m. | 12.0 ppb (12) | 2.0 ppb (2) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 8 p.m. | 10.0 ppb (10) | 2.0 ppb (2) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 27, 2021, 7 p.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 18.0 μg/m3 (64) | 64.0 | |
| July 27, 2021, 6 p.m. | 16.0 ppb (16) | 4.0 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 19.0 μg/m3 (66) | 66.0 | |
| July 27, 2021, 5 p.m. | 16.0 ppb (16) | 5.0 ppb (5) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 20.0 μg/m3 (68) | 68.0 | |
| July 27, 2021, 4 p.m. | 18.0 ppb (17) | 6.0 ppb (6) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 21.0 μg/m3 (70) | 70.0 | |
| July 27, 2021, 3 p.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 21.0 μg/m3 (70) | 70.0 | |
| July 27, 2021, 2 p.m. | 19.0 ppb (18) | 6.0 ppb (6) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 27, 2021, 1 p.m. | 27.0 ppb (26) | 10.0 ppb (10) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 26.0 μg/m3 (81) | 81.0 | |
| July 27, 2021, noon | 33.0 ppb (32) | 14.0 ppb (14) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 26.0 μg/m3 (81) | 81.0 | |
| July 27, 2021, 11 a.m. | 45.0 ppb (43) | 23.0 ppb (22) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 0.27 ppb (4) | N/A | 30.0 μg/m3 (89) | 89.0 | |
| July 27, 2021, 10 a.m. | 54.0 ppb (51) | 28.0 ppb (27) | N/A | 26.0 ppb (25) | N/A | N/A | N/A | 0.4 ppb (5) | N/A | 35.0 μg/m3 (100) | 100.0 | |
| July 27, 2021, 9 a.m. | 34.0 ppb (33) | 15.0 ppb (15) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 32.0 μg/m3 (93) | 93.0 | |
| July 27, 2021, 8 a.m. | 15.0 ppb (15) | 3.0 ppb (3) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 37.0 μg/m3 (105) | 105.0 | |
| July 27, 2021, 7 a.m. | 12.0 ppb (12) | 2.0 ppb (2) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.12 ppb (2) | N/A | 38.0 μg/m3 (108) | 108.0 | |
| July 27, 2021, 6 a.m. | 16.0 ppb (16) | 1.0 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 44.0 μg/m3 (122) | 122.0 | |
| July 27, 2021, 5 a.m. | 13.0 ppb (13) | 1.0 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | 57.0 μg/m3 (152) | 152.0 | |
| July 27, 2021, 4 a.m. | 20.0 ppb (19) | 3.0 ppb (3) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.55 ppb (7) | N/A | 60.0 μg/m3 (154) | 154.0 | |
| July 27, 2021, 3 a.m. | 21.0 ppb (20) | 3.0 ppb (3) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.75 ppb (10) | N/A | 66.0 μg/m3 (157) | 157.0 | |
| July 27, 2021, 2 a.m. | 20.0 ppb (19) | 3.0 ppb (3) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.65 ppb (8) | N/A | 72.0 μg/m3 (160) | 160.0 | |
| July 27, 2021, 1 a.m. | 25.0 ppb (24) | 4.0 ppb (4) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.73 ppb (8) | N/A | 80.0 μg/m3 (164) | 164.0 | |
| July 27, 2021, midnight | 19.0 ppb (18) | 2.0 ppb (2) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 82.0 μg/m3 (165) | 165.0 | |
| July 26, 2021, 11 p.m. | 17.0 ppb (17) | 3.0 ppb (3) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.6 ppb (7) | N/A | 76.0 μg/m3 (162) | 162.0 | |
| July 26, 2021, 10 p.m. | 14.0 ppb (14) | 1.0 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 87.0 μg/m3 (168) | 168.0 | |
| July 26, 2021, 9 p.m. | 10.0 ppb (10) | 1.0 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.45 ppb (6) | N/A | 84.0 μg/m3 (166) | 166.0 | |
| July 26, 2021, 8 p.m. | 13.0 ppb (13) | 2.0 ppb (2) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.46 ppb (6) | N/A | 79.0 μg/m3 (164) | 164.0 | |
| July 26, 2021, 7 p.m. | 13.0 ppb (13) | 2.0 ppb (2) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.48 ppb (6) | N/A | 91.0 μg/m3 (170) | 170.0 | |
| July 26, 2021, 6 p.m. | 15.0 ppb (15) | 3.0 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 40.0 μg/m3 (113) | 113.0 | |
| July 26, 2021, 5 p.m. | 18.0 ppb (17) | 5.0 ppb (5) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.13 ppb (2) | N/A | 25.0 μg/m3 (79) | 79.0 | |
| July 26, 2021, 4 p.m. | 25.0 ppb (24) | 8.0 ppb (8) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.12 ppb (2) | N/A | 24.0 μg/m3 (77) | 77.0 | |
| July 26, 2021, 3 p.m. | 23.0 ppb (22) | 7.0 ppb (7) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 25.0 μg/m3 (79) | 79.0 | |
| July 26, 2021, 2 p.m. | 26.0 ppb (25) | 9.0 ppb (9) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 28.0 μg/m3 (85) | 85.0 | |
| July 26, 2021, 1 p.m. | 32.0 ppb (31) | 13.0 ppb (13) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 30.0 μg/m3 (89) | 89.0 | |
| July 26, 2021, noon | 32.0 ppb (31) | 15.0 ppb (15) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 26.0 μg/m3 (81) | 81.0 | |
| July 26, 2021, 11 a.m. | 36.0 ppb (34) | 20.0 ppb (19) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 26, 2021, 10 a.m. | 37.0 ppb (35) | 22.0 ppb (21) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 9 a.m. | 28.0 ppb (27) | 14.0 ppb (14) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 26, 2021, 8 a.m. | 14.0 ppb (14) | 5.0 ppb (5) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 26, 2021, 7 a.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 26, 2021, 6 a.m. | 8.0 ppb (8) | 1.0 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 26, 2021, 5 a.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 26, 2021, 4 a.m. | 9.0 ppb (9) | 1.0 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 26, 2021, 3 a.m. | 12.0 ppb (12) | 2.0 ppb (2) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 26, 2021, 2 a.m. | 15.0 ppb (15) | 3.0 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 26, 2021, 1 a.m. | 15.0 ppb (15) | 3.0 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 26, 2021, midnight | 11.0 ppb (11) | 2.0 ppb (2) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 25, 2021, 11 p.m. | 10.0 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.12 ppb (2) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 25, 2021, 10 p.m. | 8.0 ppb (8) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 25, 2021, 9 p.m. | 7.0 ppb (7) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 25, 2021, 8 p.m. | 7.0 ppb (7) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 25, 2021, 7 p.m. | 8.0 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 25, 2021, 6 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 25, 2021, 5 p.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 4 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 25, 2021, 3 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 25, 2021, 2 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 1 p.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 25, 2021, noon | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 25, 2021, 11 a.m. | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 25, 2021, 10 a.m. | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 9 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 25, 2021, 8 a.m. | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 25, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 25, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 25, 2021, 4 a.m. | 9.0 ppb (9) | 0.0 ppb (0) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 17.0 μg/m3 (62) | 62.0 | |
| July 25, 2021, 3 a.m. | 11.0 ppb (11) | 1.0 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 25, 2021, 2 a.m. | 11.0 ppb (11) | 1.0 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 16.0 μg/m3 (60) | 60.0 | |
| July 25, 2021, 1 a.m. | 11.0 ppb (11) | 1.0 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.12 ppb (2) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 25, 2021, midnight | 10.0 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 24, 2021, 11 p.m. | 6.0 ppb (6) | 0.0 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.05 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 24, 2021, 10 p.m. | 7.0 ppb (7) | 0.0 ppb (0) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.08 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 24, 2021, 9 p.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 24, 2021, 8 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 24, 2021, 7 p.m. | 8.0 ppb (8) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 24, 2021, 6 p.m. | 8.0 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.06 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 5 p.m. | 8.0 ppb (8) | 1.0 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.06 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 24, 2021, 4 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 24, 2021, 3 p.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 24, 2021, 2 p.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 24, 2021, 1 p.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 24, 2021, noon | 18.0 ppb (17) | 7.0 ppb (7) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.02 ppb (0) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 24, 2021, 11 a.m. | 29.0 ppb (28) | 15.0 ppb (15) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.13 ppb (2) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 24, 2021, 10 a.m. | 30.0 ppb (29) | 14.0 ppb (14) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 24, 2021, 9 a.m. | 31.0 ppb (30) | 14.0 ppb (14) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 24, 2021, 8 a.m. | 22.0 ppb (21) | 6.0 ppb (6) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 7 a.m. | 16.0 ppb (16) | 2.0 ppb (2) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| July 24, 2021, 6 a.m. | 30.0 ppb (29) | 9.0 ppb (9) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 24, 2021, 5 a.m. | 32.0 ppb (31) | 9.0 ppb (9) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| July 24, 2021, 4 a.m. | 25.0 ppb (24) | 5.0 ppb (5) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 15.0 μg/m3 (58) | 58.0 | |
| July 24, 2021, 3 a.m. | 19.0 ppb (18) | 2.0 ppb (2) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 24, 2021, 2 a.m. | 30.0 ppb (29) | 8.0 ppb (8) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.49 ppb (6) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| July 24, 2021, 1 a.m. | 23.0 ppb (22) | 5.0 ppb (5) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.37 ppb (5) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| July 24, 2021, midnight | 16.0 ppb (16) | 3.0 ppb (3) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 11 p.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 10 p.m. | 12.0 ppb (12) | 1.0 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 9 p.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 23, 2021, 8 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 7 p.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 23, 2021, 6 p.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| July 23, 2021, 5 p.m. | 5.0 ppb (5) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 23, 2021, 4 p.m. | 6.0 ppb (6) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 |