Lake Oswego (Swest Bradbury Court) OR, US: 45.39916, -122.7455
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 9, 2020, 3 p.m. | 75.6 ppb (73) | 46.5 ppb (43) | N/A | 29.0 ppb (27) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 9.6 μg/m3 (40) | 73.0 | |
| April 9, 2020, 2 p.m. | 77.4 ppb (75) | 47.7 ppb (44) | N/A | 30.0 ppb (28) | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 10.5 μg/m3 (44) | 75.0 | |
| April 9, 2020, 1 p.m. | 43.2 ppb (40) | 15.7 ppb (15) | N/A | 28.0 ppb (26) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| April 9, 2020, noon | 45.1 ppb (42) | 18.2 ppb (17) | N/A | 27.0 ppb (25) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 10.1 μg/m3 (42) | 42.0 | |
| April 9, 2020, 11 a.m. | 51.8 ppb (48) | 23.9 ppb (22) | N/A | 28.0 ppb (26) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 10.1 μg/m3 (42) | 48.0 | |
| April 9, 2020, 10 a.m. | 20.3 ppb (19) | 2.7 ppb (3) | N/A | 18.0 ppb (17) | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 10.1 μg/m3 (42) | 42.0 | |
| April 9, 2020, 9 a.m. | 12.3 ppb (11) | 0.8 ppb (1) | N/A | 12.0 ppb (11) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 9.9 μg/m3 (41) | 41.0 | |
| April 9, 2020, 8 a.m. | 14.9 ppb (14) | 0.8 ppb (1) | N/A | 14.0 ppb (13) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 10.2 μg/m3 (42) | 42.0 | |
| April 9, 2020, 7 a.m. | 12.0 ppb (11) | 0.1 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| April 9, 2020, 6 a.m. | 9.4 ppb (9) | 0.1 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 8.8 μg/m3 (37) | 37.0 | |
| April 9, 2020, 5 a.m. | 14.2 ppb (13) | 0.3 ppb (0) | N/A | 14.0 ppb (13) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 7.8 μg/m3 (32) | 32.0 | |
| April 9, 2020, 4 a.m. | 16.5 ppb (15) | 2.7 ppb (3) | N/A | 14.0 ppb (13) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 9, 2020, 3 a.m. | 14.1 ppb (13) | 3.0 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 9, 2020, 2 a.m. | 13.1 ppb (12) | 4.0 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 6.8 μg/m3 (28) | 31.0 | |
| April 9, 2020, 1 a.m. | 17.1 ppb (16) | 6.5 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 6.9 μg/m3 (29) | 30.0 | |
| April 9, 2020, midnight | 18.4 ppb (17) | 6.1 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 6.9 μg/m3 (29) | 31.0 | |
| April 8, 2020, 11 p.m. | 15.0 ppb (14) | 5.7 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 6.8 μg/m3 (28) | 32.0 | |
| April 8, 2020, 10 p.m. | 21.6 ppb (20) | 9.5 ppb (9) | N/A | 12.0 ppb (11) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| April 8, 2020, 9 p.m. | 23.7 ppb (22) | 11.8 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| April 8, 2020, 8 p.m. | 15.9 ppb (15) | 7.2 ppb (7) | N/A | 9.0 ppb (8) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 8, 2020, 7 p.m. | 24.8 ppb (23) | 13.7 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 7.9 μg/m3 (33) | 33.0 | |
| April 8, 2020, 6 p.m. | 34.6 ppb (32) | 20.9 ppb (19) | N/A | 14.0 ppb (13) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 8.5 μg/m3 (35) | 35.0 | |
| April 8, 2020, 5 p.m. | 20.5 ppb (19) | 10.4 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| April 8, 2020, 4 p.m. | 42.8 ppb (40) | 26.6 ppb (25) | N/A | 16.0 ppb (15) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 10.1 μg/m3 (42) | 42.0 | |
| April 8, 2020, 3 p.m. | 69.4 ppb (66) | 47.1 ppb (44) | N/A | 22.0 ppb (20) | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 10.5 μg/m3 (44) | 66.0 | |
| April 8, 2020, 2 p.m. | 102.2 ppb (100) | 80.8 ppb (79) | N/A | 22.0 ppb (20) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 10.3 μg/m3 (43) | 100.0 | |
| April 8, 2020, 1 p.m. | 59.7 ppb (56) | 42.4 ppb (39) | N/A | 17.0 ppb (16) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.5 μg/m3 (35) | 56.0 | |
| April 8, 2020, noon | 49.1 ppb (45) | 33.1 ppb (31) | N/A | 16.0 ppb (15) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.5 μg/m3 (35) | 45.0 | |
| April 8, 2020, 11 a.m. | 38.4 ppb (36) | 21.2 ppb (20) | N/A | 17.0 ppb (16) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 8.4 μg/m3 (35) | 36.0 | |
| April 8, 2020, 10 a.m. | 17.2 ppb (16) | 3.9 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 8.6 μg/m3 (36) | 36.0 | |
| April 8, 2020, 9 a.m. | 18.5 ppb (17) | 4.8 ppb (4) | N/A | 14.0 ppb (13) | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 9.3 μg/m3 (39) | 39.0 | |
| April 8, 2020, 8 a.m. | 15.7 ppb (15) | 2.3 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 9.2 μg/m3 (38) | 38.0 | |
| April 8, 2020, 7 a.m. | 25.5 ppb (24) | 7.0 ppb (6) | N/A | 19.0 ppb (18) | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 9.8 μg/m3 (41) | 41.0 | |
| April 8, 2020, 6 a.m. | 12.9 ppb (12) | 2.0 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 8, 2020, 5 a.m. | 24.3 ppb (23) | 4.3 ppb (4) | N/A | 20.0 ppb (19) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 8.5 μg/m3 (35) | 35.0 | |
| April 8, 2020, 4 a.m. | 16.1 ppb (15) | 2.5 ppb (2) | N/A | 14.0 ppb (13) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| April 8, 2020, 3 a.m. | 12.1 ppb (11) | 1.2 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| April 8, 2020, 2 a.m. | 8.3 ppb (8) | 0.7 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| April 8, 2020, 1 a.m. | 7.6 ppb (7) | 1.4 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | 7.4 μg/m3 (31) | 31.0 | |
| April 8, 2020, midnight | 16.2 ppb (15) | 6.8 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 6.9 μg/m3 (29) | 29.0 | |
| April 7, 2020, 11 p.m. | 12.5 ppb (12) | 5.6 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 6.1 μg/m3 (25) | 31.0 | |
| April 7, 2020, 10 p.m. | 9.9 ppb (9) | 4.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 5.8 μg/m3 (24) | 31.0 | |
| April 7, 2020, 9 p.m. | 8.1 ppb (8) | 3.4 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 6.3 μg/m3 (26) | 32.0 | |
| April 7, 2020, 8 p.m. | 17.9 ppb (17) | 8.6 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 6.1 μg/m3 (25) | 28.0 | |
| April 7, 2020, 7 p.m. | 25.6 ppb (24) | 13.7 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 5.6 μg/m3 (23) | 25.0 | |
| April 7, 2020, 6 p.m. | 25.9 ppb (24) | 13.7 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 5.6 μg/m3 (23) | 24.0 | |
| April 7, 2020, 5 p.m. | 29.7 ppb (28) | 15.7 ppb (15) | N/A | 14.0 ppb (13) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 5.4 μg/m3 (23) | 28.0 | |
| April 7, 2020, 4 p.m. | 48.5 ppb (45) | 29.1 ppb (27) | N/A | 20.0 ppb (19) | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 5.8 μg/m3 (24) | 45.0 | |
| April 7, 2020, 3 p.m. | 58.5 ppb (55) | 35.3 ppb (33) | N/A | 23.0 ppb (21) | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 6.5 μg/m3 (27) | 55.0 | |
| April 7, 2020, 2 p.m. | 55.7 ppb (52) | 34.5 ppb (32) | N/A | 21.0 ppb (19) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 5.9 μg/m3 (25) | 52.0 | |
| April 7, 2020, 1 p.m. | 31.8 ppb (29) | 12.0 ppb (11) | N/A | 20.0 ppb (19) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.1 μg/m3 (21) | 29.0 | |
| April 7, 2020, noon | 33.8 ppb (31) | 14.1 ppb (13) | N/A | 20.0 ppb (19) | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 5.0 μg/m3 (21) | 31.0 | |
| April 7, 2020, 11 a.m. | 14.8 ppb (14) | 1.0 ppb (1) | N/A | 14.0 ppb (13) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| April 7, 2020, 10 a.m. | 24.5 ppb (23) | 7.3 ppb (7) | N/A | 17.0 ppb (16) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.4 μg/m3 (18) | 23.0 | |
| April 7, 2020, 9 a.m. | 17.0 ppb (16) | 4.2 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| April 7, 2020, 8 a.m. | 14.5 ppb (13) | 4.2 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.9 μg/m3 (16) | 18.0 | |
| April 7, 2020, 7 a.m. | 19.1 ppb (18) | 5.4 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.7 μg/m3 (15) | 18.0 | |
| April 7, 2020, 6 a.m. | 10.6 ppb (10) | 2.8 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 3.9 μg/m3 (16) | 22.0 | |
| April 7, 2020, 5 a.m. | 8.4 ppb (8) | 3.2 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 3.5 μg/m3 (15) | 25.0 | |
| April 7, 2020, 4 a.m. | 10.7 ppb (10) | 4.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 4.6 μg/m3 (19) | 22.0 | |
| April 7, 2020, 3 a.m. | 14.3 ppb (13) | 2.9 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 5.7 μg/m3 (24) | 24.0 | |
| April 7, 2020, 2 a.m. | 23.2 ppb (21) | 9.0 ppb (8) | N/A | 14.0 ppb (13) | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 5.1 μg/m3 (21) | 21.0 | |
| April 7, 2020, 1 a.m. | 12.1 ppb (11) | 4.4 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| April 7, 2020, midnight | 12.5 ppb (12) | 5.5 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| April 6, 2020, 11 p.m. | 13.7 ppb (13) | 6.1 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| April 6, 2020, 10 p.m. | 6.1 ppb (6) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 6.3 μg/m3 (26) | 26.0 | |
| April 6, 2020, 9 p.m. | 14.0 ppb (13) | 6.4 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 6.5 μg/m3 (27) | 27.0 | |
| April 6, 2020, 8 p.m. | 9.6 ppb (9) | 4.2 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 7.5 μg/m3 (31) | 31.0 | |
| April 6, 2020, 7 p.m. | 17.1 ppb (16) | 9.4 ppb (9) | N/A | 8.0 ppb (7) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 8.5 μg/m3 (35) | 35.0 | |
| April 6, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 6, 2020, 5 p.m. | 51.8 ppb (48) | 34.8 ppb (32) | N/A | 17.0 ppb (16) | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 7.8 μg/m3 (32) | 48.0 | |
| April 6, 2020, 4 p.m. | 33.1 ppb (31) | 19.8 ppb (18) | N/A | 13.0 ppb (12) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 6.1 μg/m3 (25) | 31.0 | |
| April 6, 2020, 3 p.m. | 17.0 ppb (16) | 4.6 ppb (4) | N/A | 12.0 ppb (11) | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 6.5 μg/m3 (27) | 27.0 | |
| April 6, 2020, 2 p.m. | 39.3 ppb (36) | 24.0 ppb (22) | N/A | 15.0 ppb (14) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.5 μg/m3 (27) | 36.0 | |
| April 6, 2020, 1 p.m. | 53.2 ppb (49) | 37.6 ppb (35) | N/A | 16.0 ppb (15) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.9 μg/m3 (25) | 49.0 | |
| April 6, 2020, noon | 23.1 ppb (21) | 11.7 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.4 μg/m3 (23) | 23.0 | |
| April 6, 2020, 11 a.m. | 32.1 ppb (30) | 18.5 ppb (17) | N/A | 14.0 ppb (13) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 5.7 μg/m3 (24) | 30.0 | |
| April 6, 2020, 10 a.m. | 21.3 ppb (20) | 8.1 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 5.9 μg/m3 (25) | 25.0 | |
| April 6, 2020, 9 a.m. | 17.6 ppb (16) | 4.5 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| April 6, 2020, 8 a.m. | 15.8 ppb (15) | 1.2 ppb (1) | N/A | 15.0 ppb (14) | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 7.6 μg/m3 (32) | 32.0 | |
| April 6, 2020, 7 a.m. | 27.1 ppb (25) | 8.6 ppb (8) | N/A | 19.0 ppb (18) | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 6.6 μg/m3 (28) | 28.0 | |
| April 6, 2020, 6 a.m. | 12.9 ppb (12) | 3.0 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| April 6, 2020, 5 a.m. | 4.0 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 3.9 μg/m3 (16) | 20.0 | |
| April 6, 2020, 4 a.m. | 9.2 ppb (9) | 1.0 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| April 6, 2020, 3 a.m. | 2.1 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 3.8 μg/m3 (16) | 23.0 | |
| April 6, 2020, 2 a.m. | 1.3 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 3.4 μg/m3 (14) | 24.0 | |
| April 6, 2020, 1 a.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 3.4 μg/m3 (14) | 25.0 | |
| April 6, 2020, midnight | 2.8 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 3.1 μg/m3 (13) | 26.0 | |
| April 5, 2020, 11 p.m. | 2.3 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.8 μg/m3 (12) | 28.0 | |
| April 5, 2020, 10 p.m. | 3.5 ppb (3) | 1.7 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 2.5 μg/m3 (10) | 28.0 | |
| April 5, 2020, 9 p.m. | 1.3 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 2.2 μg/m3 (9) | 28.0 | |
| April 5, 2020, 8 p.m. | 5.5 ppb (5) | 2.6 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 2.2 μg/m3 (9) | 27.0 | |
| April 5, 2020, 7 p.m. | 4.3 ppb (4) | 1.9 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 2.2 μg/m3 (9) | 25.0 | |
| April 5, 2020, 6 p.m. | 1.9 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 2.5 μg/m3 (10) | 25.0 | |
| April 5, 2020, 5 p.m. | 2.3 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 2.5 μg/m3 (10) | 22.0 | |
| April 5, 2020, 4 p.m. | 2.6 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.7 μg/m3 (11) | 21.0 | |
| April 5, 2020, 3 p.m. | 5.2 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 3.0 μg/m3 (12) | 18.0 | |
| April 5, 2020, 2 p.m. | 18.1 ppb (17) | 5.4 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| April 5, 2020, 1 p.m. | 36.9 ppb (34) | 16.0 ppb (15) | N/A | 21.0 ppb (19) | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 4.1 μg/m3 (17) | 34.0 | |
| April 5, 2020, noon | 12.1 ppb (11) | 2.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 3.2 μg/m3 (13) | 15.0 | |
| April 5, 2020, 11 a.m. | 2.6 ppb (2) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 3.0 μg/m3 (12) | 21.0 | |
| April 5, 2020, 10 a.m. | 9.6 ppb (9) | 2.5 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.7 μg/m3 (15) | 16.0 | |
| April 5, 2020, 9 a.m. | 17.2 ppb (16) | 5.5 ppb (5) | N/A | 12.0 ppb (11) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 8.3 μg/m3 (35) | 35.0 | |
| April 5, 2020, 8 a.m. | 13.5 ppb (12) | 2.5 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 11.9 μg/m3 (50) | 50.0 | |
| April 5, 2020, 7 a.m. | 15.3 ppb (14) | 4.2 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 12.6 μg/m3 (51) | 51.0 | |
| April 5, 2020, 6 a.m. | 16.1 ppb (15) | 4.7 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 11.6 μg/m3 (48) | 48.0 | |
| April 5, 2020, 5 a.m. | 14.6 ppb (14) | 4.4 ppb (4) | N/A | 10.0 ppb (9) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 9.5 μg/m3 (40) | 40.0 | |
| April 5, 2020, 4 a.m. | 16.2 ppb (15) | 5.0 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 9.3 μg/m3 (39) | 39.0 | |
| April 5, 2020, 3 a.m. | 17.7 ppb (16) | 6.2 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 8.4 μg/m3 (35) | 35.0 | |
| April 5, 2020, 2 a.m. | 17.2 ppb (16) | 7.0 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 7.7 μg/m3 (32) | 32.0 | |
| April 5, 2020, 1 a.m. | 22.4 ppb (21) | 9.4 ppb (9) | N/A | 13.0 ppb (12) | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 7.2 μg/m3 (30) | 30.0 | |
| April 5, 2020, midnight | 15.5 ppb (14) | 6.2 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| April 4, 2020, 11 p.m. | 17.6 ppb (16) | 7.0 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 3.8 μg/m3 (16) | 19.0 | |
| April 4, 2020, 10 p.m. | 11.2 ppb (10) | 4.6 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 3.3 μg/m3 (14) | 22.0 | |
| April 4, 2020, 9 p.m. | 15.0 ppb (14) | 6.9 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 3.2 μg/m3 (13) | 22.0 | |
| April 4, 2020, 8 p.m. | 12.2 ppb (11) | 5.9 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 3.7 μg/m3 (15) | 21.0 | |
| April 4, 2020, 7 p.m. | 8.3 ppb (8) | 3.8 ppb (4) | N/A | 4.0 ppb (4) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.8 μg/m3 (16) | 18.0 | |
| April 4, 2020, 6 p.m. | 6.2 ppb (6) | 2.6 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 4, 2020, 5 p.m. | 8.0 ppb (7) | 3.4 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| April 4, 2020, 4 p.m. | 9.8 ppb (9) | 4.3 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 6.4 μg/m3 (27) | 27.0 | |
| April 4, 2020, 3 p.m. | 28.4 ppb (26) | 17.9 ppb (17) | N/A | 10.0 ppb (9) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 6.7 μg/m3 (28) | 28.0 | |
| April 4, 2020, 2 p.m. | 47.1 ppb (44) | 31.4 ppb (29) | N/A | 16.0 ppb (15) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 6.9 μg/m3 (29) | 44.0 | |
| April 4, 2020, 1 p.m. | 36.1 ppb (33) | 19.1 ppb (18) | N/A | 17.0 ppb (16) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 5.5 μg/m3 (23) | 33.0 | |
| April 4, 2020, noon | 13.9 ppb (13) | 1.6 ppb (1) | N/A | 12.0 ppb (11) | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 4.5 μg/m3 (19) | 19.0 | |
| April 4, 2020, 11 a.m. | 13.2 ppb (12) | 0.7 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | 5.0 ppb (4) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| April 4, 2020, 10 a.m. | 8.0 ppb (7) | 0.1 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| April 4, 2020, 9 a.m. | 8.1 ppb (8) | 0.3 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| April 4, 2020, 8 a.m. | 10.8 ppb (10) | 0.9 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 4.6 μg/m3 (19) | 19.0 | |
| April 4, 2020, 7 a.m. | 11.4 ppb (11) | 1.6 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 5.3 μg/m3 (22) | 22.0 | |
| April 4, 2020, 6 a.m. | 9.4 ppb (9) | 1.9 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 4.4 μg/m3 (18) | 18.0 | |
| April 4, 2020, 5 a.m. | 8.1 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 5.5 μg/m3 (23) | 23.0 | |
| April 4, 2020, 4 a.m. | 9.5 ppb (9) | 0.8 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 6.1 μg/m3 (25) | 25.0 | |
| April 4, 2020, 3 a.m. | 18.1 ppb (17) | 5.6 ppb (5) | N/A | 12.0 ppb (11) | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 3.6 μg/m3 (15) | 17.0 | |
| April 4, 2020, 2 a.m. | 25.0 ppb (23) | 10.0 ppb (9) | N/A | 15.0 ppb (14) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 3.4 μg/m3 (14) | 23.0 | |
| April 4, 2020, 1 a.m. | 20.6 ppb (19) | 8.8 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 2.9 μg/m3 (12) | 19.0 | |
| April 4, 2020, midnight | 22.0 ppb (20) | 10.8 ppb (10) | N/A | 11.0 ppb (10) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 2.8 μg/m3 (12) | 20.0 | |
| April 3, 2020, 11 p.m. | 25.7 ppb (24) | 13.7 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.3 μg/m3 (14) | 24.0 | |
| April 3, 2020, 10 p.m. | 31.8 ppb (29) | 15.7 ppb (15) | N/A | 16.0 ppb (15) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 3.5 μg/m3 (15) | 29.0 | |
| April 3, 2020, 9 p.m. | 23.0 ppb (21) | 12.1 ppb (11) | N/A | 11.0 ppb (10) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.4 μg/m3 (14) | 21.0 | |
| April 3, 2020, 8 p.m. | 26.3 ppb (24) | 14.4 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 3.9 μg/m3 (16) | 24.0 | |
| April 3, 2020, 7 p.m. | 34.6 ppb (32) | 21.1 ppb (20) | N/A | 13.0 ppb (12) | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 5.1 μg/m3 (21) | 32.0 | |
| April 3, 2020, 6 p.m. | 44.2 ppb (41) | 27.5 ppb (25) | N/A | 17.0 ppb (16) | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 5.8 μg/m3 (24) | 41.0 | |
| April 3, 2020, 5 p.m. | 30.0 ppb (28) | 16.3 ppb (15) | N/A | 14.0 ppb (13) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 4.9 μg/m3 (20) | 28.0 | |
| April 3, 2020, 4 p.m. | 41.6 ppb (39) | 23.7 ppb (22) | N/A | 18.0 ppb (17) | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 5.3 μg/m3 (22) | 39.0 | |
| April 3, 2020, 3 p.m. | 55.6 ppb (52) | 38.7 ppb (36) | N/A | 17.0 ppb (16) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 7.2 μg/m3 (30) | 52.0 | |
| April 3, 2020, 2 p.m. | 72.0 ppb (69) | 54.2 ppb (50) | N/A | 18.0 ppb (17) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 8.0 μg/m3 (33) | 69.0 | |
| April 3, 2020, 1 p.m. | 65.0 ppb (62) | 49.0 ppb (45) | N/A | 16.0 ppb (15) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 6.9 μg/m3 (29) | 62.0 | |
| April 3, 2020, noon | 51.4 ppb (48) | 34.8 ppb (32) | N/A | 17.0 ppb (16) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 6.6 μg/m3 (28) | 48.0 | |
| April 3, 2020, 11 a.m. | 29.7 ppb (28) | 14.6 ppb (14) | N/A | 15.0 ppb (14) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 5.3 μg/m3 (22) | 28.0 | |
| April 3, 2020, 10 a.m. | 10.2 ppb (9) | 1.8 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | 6.0 ppb (5) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| April 3, 2020, 9 a.m. | 10.8 ppb (10) | 2.2 ppb (2) | N/A | 9.0 ppb (8) | N/A | N/A | 3.0 ppb (2) | N/A | N/A | 4.9 μg/m3 (20) | 20.0 | |
| April 3, 2020, 8 a.m. | 8.1 ppb (8) | 0.8 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | 7.0 ppb (5) | N/A | N/A | 5.6 μg/m3 (23) | 23.0 | |
| April 3, 2020, 7 a.m. | 8.2 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 4.2 μg/m3 (18) | 18.0 | |
| April 3, 2020, 6 a.m. | 7.5 ppb (7) | 0.5 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 3.7 μg/m3 (15) | 15.0 | |
| April 3, 2020, 5 a.m. | 14.8 ppb (14) | 3.9 ppb (4) | N/A | 11.0 ppb (10) | N/A | N/A | 20.0 ppb (15) | N/A | N/A | 3.5 μg/m3 (15) | 15.0 | |
| April 3, 2020, 4 a.m. | 15.0 ppb (14) | 3.7 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 4.1 μg/m3 (17) | 17.0 | |
| April 3, 2020, 3 a.m. | 11.3 ppb (10) | 2.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 3.1 μg/m3 (13) | 18.0 | |
| April 3, 2020, 2 a.m. | 8.6 ppb (8) | 1.8 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 3.2 μg/m3 (13) | 20.0 | |
| April 3, 2020, midnight | 24.2 ppb (22) | 13.1 ppb (12) | N/A | 11.0 ppb (10) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 3.2 μg/m3 (13) | 22.0 | |
| April 2, 2020, 11 p.m. | 21.0 ppb (19) | 11.0 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 2.7 μg/m3 (11) | 21.0 | |
| April 2, 2020, 10 p.m. | 28.9 ppb (27) | 16.7 ppb (15) | N/A | 12.0 ppb (11) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 3.1 μg/m3 (13) | 27.0 | |
| April 2, 2020, 9 p.m. | 19.1 ppb (18) | 11.0 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 3.0 μg/m3 (12) | 21.0 | |
| April 2, 2020, 8 p.m. | 22.7 ppb (21) | 12.4 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 3.2 μg/m3 (13) | 22.0 | |
| April 2, 2020, 7 p.m. | 33.2 ppb (31) | 19.6 ppb (18) | N/A | 14.0 ppb (13) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 3.5 μg/m3 (15) | 31.0 | |
| April 2, 2020, 6 p.m. | 18.1 ppb (17) | 10.8 ppb (10) | N/A | 7.0 ppb (6) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 3.1 μg/m3 (13) | 18.0 | |
| April 2, 2020, 5 p.m. | 38.5 ppb (36) | 23.7 ppb (22) | N/A | 15.0 ppb (14) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 3.4 μg/m3 (14) | 36.0 | |
| April 2, 2020, 4 p.m. | 36.0 ppb (33) | 24.0 ppb (22) | N/A | 12.0 ppb (11) | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 4.1 μg/m3 (17) | 33.0 | |
| April 2, 2020, 3 p.m. | 60.8 ppb (57) | 42.9 ppb (40) | N/A | 18.0 ppb (17) | N/A | N/A | 4.0 ppb (3) | N/A | N/A | 5.4 μg/m3 (23) | 57.0 |