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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 21, 2022, midnight | 10.0 ppb (10) | 2.0 ppb (2) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.3 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 20, 2022, 11 p.m. | 10.0 ppb (10) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2022, 10 p.m. | 28.0 ppb (27) | 6.0 ppb (6) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 20, 2022, 9 p.m. | 12.0 ppb (12) | 3.0 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 20, 2022, 8 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 20, 2022, 7 p.m. | 3.0 ppb (3) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2022, 6 p.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.07 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 5 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.03 ppb (0) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 4 p.m. | 3.0 ppb (3) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.04 ppb (0) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 3 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 2 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, 1 p.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, 11 a.m. | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 20, 2022, 10 a.m. | 10.0 ppb (10) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2022, 9 a.m. | 19.0 ppb (18) | 6.0 ppb (6) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 20, 2022, 8 a.m. | 37.0 ppb (35) | 19.0 ppb (18) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 6.0 μg/m3 (25) | 35.0 | |
| May 20, 2022, 7 a.m. | 15.0 ppb (15) | 6.0 ppb (6) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 6 a.m. | 13.0 ppb (13) | 5.0 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 5 a.m. | 13.0 ppb (13) | 5.0 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 4 a.m. | 14.0 ppb (14) | 4.0 ppb (4) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 20, 2022, 3 a.m. | 14.0 ppb (14) | 5.0 ppb (5) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, 2 a.m. | 14.0 ppb (14) | 4.0 ppb (4) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, 1 a.m. | 13.0 ppb (13) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, 1 a.m. | 13.0 ppb (13) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.36 ppb (5) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, midnight | 16.0 ppb (16) | 4.0 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 20, 2022, midnight | 16.0 ppb (16) | 4.0 ppb (4) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2022, 11 p.m. | 17.0 ppb (17) | 5.0 ppb (5) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2022, 10 p.m. | 7.0 ppb (7) | 2.0 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2022, 9 p.m. | 14.0 ppb (14) | 5.0 ppb (5) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.31 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2022, 8 p.m. | 16.0 ppb (16) | 6.0 ppb (6) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2022, 7 p.m. | 18.0 ppb (17) | 7.0 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2022, 7 p.m. | 18.0 ppb (17) | 7.0 ppb (7) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.31 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2022, 4 p.m. | 28.0 ppb (27) | 11.0 ppb (11) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.27 ppb (4) | N/A | 6.0 μg/m3 (25) | 27.0 | |
| May 19, 2022, 2 p.m. | 13.0 ppb (13) | 3.0 ppb (3) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2022, 6 a.m. | 18.0 ppb (17) | 2.0 ppb (2) | N/A | 16.0 ppb (16) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2022, 5 a.m. | 13.0 ppb (13) | 1.0 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2022, 4 a.m. | 18.0 ppb (17) | 1.0 ppb (1) | N/A | 17.0 ppb (17) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | 18.0 μg/m3 (64) | 64.0 | |
| May 19, 2022, 3 a.m. | 24.0 ppb (23) | 1.0 ppb (1) | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 14.0 μg/m3 (55) | 55.0 | |
| May 19, 2022, 2 a.m. | 22.0 ppb (21) | 4.0 ppb (4) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2022, 1 a.m. | 14.0 ppb (14) | 2.0 ppb (2) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 18, 2022, 11 p.m. | 18.0 ppb (17) | 5.0 ppb (5) | N/A | 13.0 ppb (13) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 10 p.m. | 16.0 ppb (16) | 5.0 ppb (5) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 9 p.m. | 11.0 ppb (11) | 4.0 ppb (4) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 8 p.m. | 14.0 ppb (14) | 5.0 ppb (5) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 7 p.m. | 12.0 ppb (12) | 5.0 ppb (5) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, 5 p.m. | 17.0 ppb (17) | 7.0 ppb (7) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, 4 p.m. | 17.0 ppb (17) | 8.0 ppb (8) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 4 p.m. | 17.0 ppb (17) | 8.0 ppb (8) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 3 p.m. | 21.0 ppb (20) | 12.0 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 3 p.m. | 21.0 ppb (20) | 12.0 ppb (12) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 2 p.m. | 23.0 ppb (22) | 12.0 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 2 p.m. | 23.0 ppb (22) | 12.0 ppb (12) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2022, 1 p.m. | 20.0 ppb (19) | 11.0 ppb (11) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, 1 p.m. | 20.0 ppb (19) | 11.0 ppb (11) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, noon | 21.0 ppb (20) | 11.0 ppb (11) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, noon | 21.0 ppb (20) | 11.0 ppb (11) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2022, 11 a.m. | 26.0 ppb (25) | 15.0 ppb (15) | N/A | 10.0 ppb (10) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| May 18, 2022, 10 a.m. | 30.0 ppb (29) | 16.0 ppb (16) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 29.0 | |
| May 18, 2022, 2 a.m. | 8.0 ppb (8) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 18, 2022, 1 a.m. | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 18, 2022, midnight | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 17, 2022, 11 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 10 p.m. | 7.0 ppb (7) | 4.0 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 9 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 9 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 8 p.m. | 9.0 ppb (9) | 4.0 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 7 p.m. | 12.0 ppb (12) | 5.0 ppb (5) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 7 p.m. | 12.0 ppb (12) | 5.0 ppb (5) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 6 p.m. | 13.0 ppb (13) | 6.0 ppb (6) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 6 p.m. | 13.0 ppb (13) | 6.0 ppb (6) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 5 p.m. | 14.0 ppb (14) | 6.0 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 5 p.m. | 14.0 ppb (14) | 6.0 ppb (6) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 17, 2022, 4 p.m. | 14.0 ppb (14) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 17, 2022, 4 p.m. | 14.0 ppb (14) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 17, 2022, 3 p.m. | 13.0 ppb (13) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 3 p.m. | 13.0 ppb (13) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 2 p.m. | 19.0 ppb (18) | 10.0 ppb (10) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| May 17, 2022, noon | 14.0 ppb (14) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, noon | 14.0 ppb (14) | 7.0 ppb (7) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 17, 2022, 10 a.m. | 17.0 ppb (17) | 9.0 ppb (9) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 3.0 μg/m3 (13) | 17.0 | |
| May 17, 2022, 10 a.m. | 17.0 ppb (17) | 9.0 ppb (9) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 3.0 μg/m3 (13) | 17.0 | |
| May 17, 2022, 9 a.m. | 12.0 ppb (12) | 6.0 ppb (6) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 17, 2022, 8 a.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.13 ppb (2) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 17, 2022, 5 a.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 17, 2022, 4 a.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 17, 2022, midnight | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 17, 2022, midnight | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 17, 2022, midnight | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 16, 2022, 11 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2022, 9 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2022, 8 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 16, 2022, 7 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 16, 2022, 6 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 16, 2022, 5 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2022, 5 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2022, 4 p.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 16, 2022, 3 p.m. | 3.0 ppb (3) | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.09 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2022, 2 p.m. | 5.0 ppb (5) | 3.0 ppb (3) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.1 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 16, 2022, 1 p.m. | 19.0 ppb (18) | 11.0 ppb (11) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 16, 2022, 6 a.m. | 8.0 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2022, 5 a.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2022, 4 a.m. | 7.0 ppb (7) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2022, 3 a.m. | 9.0 ppb (9) | 2.0 ppb (2) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2022, 2 a.m. | 11.0 ppb (11) | 3.0 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2022, 2 a.m. | 11.0 ppb (11) | 3.0 ppb (3) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2022, midnight | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2022, midnight | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 16, 2022, midnight | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 10 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 9 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 8 p.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 15, 2022, 7 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 15, 2022, 6 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 15, 2022, 5 p.m. | 6.0 ppb (6) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 4 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 10 a.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (9) | 9.0 | |
| May 15, 2022, 9 a.m. | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.12 ppb (2) | N/A | 2.0 μg/m3 (9) | 9.0 | |
| May 15, 2022, 8 a.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.06 ppb (2) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 15, 2022, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.11 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 15, 2022, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 15, 2022, 6 a.m. | 11.0 ppb (11) | 8.0 ppb (8) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 15, 2022, 5 a.m. | 11.0 ppb (11) | 8.0 ppb (8) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2022, 5 a.m. | 11.0 ppb (11) | 8.0 ppb (8) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 15, 2022, 4 a.m. | 11.0 ppb (11) | 8.0 ppb (8) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.2 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, 1 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, 1 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, 1 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, 1 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, 1 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2022, midnight | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.28 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 10 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 9 p.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 8 p.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2022, 7 p.m. | 8.0 ppb (8) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.27 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2022, 6 p.m. | 7.0 ppb (7) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 5 p.m. | 10.0 ppb (10) | 5.0 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 5 p.m. | 10.0 ppb (10) | 5.0 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 5 p.m. | 10.0 ppb (10) | 5.0 ppb (5) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 4 p.m. | 7.0 ppb (7) | 4.0 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 3 p.m. | 8.0 ppb (8) | 4.0 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 9 a.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 8 a.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 14, 2022, 7 a.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 6 a.m. | 6.0 ppb (6) | 3.0 ppb (3) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 5 a.m. | 8.0 ppb (8) | 4.0 ppb (4) | 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 | |
| May 14, 2022, 4 a.m. | 8.0 ppb (8) | 3.0 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.26 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, 1 a.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, midnight | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, midnight | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, midnight | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2022, midnight | 4.0 ppb (4) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2022, 6 p.m. | 4.0 ppb (4) | 3.0 ppb (3) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | 3.0 μg/m3 (13) | 13.0 | |
| May 13, 2022, 3 p.m. | 20.0 ppb (19) | 12.0 ppb (12) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2022, 2 p.m. | 15.0 ppb (15) | 9.0 ppb (9) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 13, 2022, 1 p.m. | 16.0 ppb (16) | 8.0 ppb (8) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2022, noon | 20.0 ppb (19) | 11.0 ppb (11) | N/A | 9.0 ppb (9) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2022, 10 a.m. | 24.0 ppb (23) | 13.0 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2022, 10 a.m. | 24.0 ppb (23) | 13.0 ppb (13) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.21 ppb (3) | N/A | 7.0 μg/m3 (30) | 30.0 | |
| May 13, 2022, 9 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 13, 2022, 9 a.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 13, 2022, 8 a.m. | 22.0 ppb (21) | 7.0 ppb (7) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 13.0 μg/m3 (53) | 53.0 | |
| May 13, 2022, 7 a.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.16 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 13, 2022, 6 a.m. | 9.0 ppb (9) | 0.0 ppb (0) | N/A | 8.0 ppb (8) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | 8.0 μg/m3 (34) | 34.0 | |
| May 13, 2022, 5 a.m. | 16.0 ppb (16) | 1.0 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.18 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 13, 2022, 4 a.m. | 12.0 ppb (12) | 1.0 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | N/A | 0.19 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 13, 2022, 2 a.m. | 9.0 ppb (9) | 1.0 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | N/A | 0.17 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2022, 1 a.m. | 39.0 ppb (37) | 12.0 ppb (12) | N/A | 28.0 ppb (27) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 6.0 μg/m3 (25) | 37.0 | |
| May 13, 2022, midnight | 19.0 ppb (18) | 3.0 ppb (3) | N/A | 15.0 ppb (15) | N/A | N/A | N/A | 0.22 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 |