Bountiful (Wayne Cooper) UT, US: 40.897999, -111.885498
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 25, 2020, 4 a.m. | 20.9 ppb (19) | 0.3 ppb (0) | N/A | 21.0 ppb (19) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 21.2 μg/m3 (70) | 70.0 | |
| Sept. 25, 2020, 3 a.m. | 6.8 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 15.6 μg/m3 (58) | 58.0 | |
| Sept. 25, 2020, 2 a.m. | 11.4 ppb (11) | 0.2 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 18.3 μg/m3 (63) | 63.0 | |
| Sept. 25, 2020, 1 a.m. | 12.8 ppb (12) | 0.2 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 22.6 μg/m3 (73) | 73.0 | |
| Sept. 25, 2020, midnight | 13.1 ppb (12) | 0.4 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 19.6 μg/m3 (66) | 66.0 | |
| Sept. 24, 2020, 11 p.m. | 6.2 ppb (6) | 0.4 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 18.9 μg/m3 (65) | 65.0 | |
| Sept. 24, 2020, 10 p.m. | 4.4 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 15.7 μg/m3 (58) | 58.0 | |
| Sept. 24, 2020, 9 p.m. | 4.7 ppb (4) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 14.7 μg/m3 (56) | 56.0 | |
| Sept. 24, 2020, 8 p.m. | 4.3 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 58.0 ppb (45) | N/A | N/A | 16.3 μg/m3 (59) | 59.0 | |
| Sept. 24, 2020, 7 p.m. | 4.9 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 58.0 ppb (45) | N/A | N/A | 17.6 μg/m3 (62) | 62.0 | |
| Sept. 24, 2020, 6 p.m. | 5.7 ppb (5) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 18.4 μg/m3 (64) | 64.0 | |
| Sept. 24, 2020, 5 p.m. | 9.9 ppb (9) | 2.1 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | 18.4 μg/m3 (64) | 64.0 | |
| Sept. 24, 2020, 4 p.m. | 20.4 ppb (19) | 3.9 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | 25.6 μg/m3 (79) | 79.0 | |
| Sept. 24, 2020, 3 p.m. | 30.4 ppb (28) | 6.8 ppb (6) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | 29.7 μg/m3 (88) | 88.0 | |
| Sept. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 32.1 μg/m3 (93) | 93.0 | |
| Sept. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | N/A | 39.8 μg/m3 (111) | 111.0 | |
| Sept. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 34.2 μg/m3 (97) | 97.0 | |
| Sept. 24, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 30.9 μg/m3 (90) | 90.0 | |
| Sept. 24, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 31.7 μg/m3 (92) | 92.0 | |
| Sept. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 33.2 μg/m3 (95) | 95.0 | |
| Sept. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 34.0 μg/m3 (97) | 97.0 | |
| Sept. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 32.4 μg/m3 (93) | 93.0 | |
| Sept. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | N/A | 27.4 μg/m3 (83) | 83.0 | |
| Sept. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | N/A | 25.5 μg/m3 (79) | 79.0 | |
| Sept. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 24.1 μg/m3 (76) | 76.0 | |
| Sept. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 23.9 μg/m3 (75) | 75.0 | |
| Sept. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 24.9 μg/m3 (77) | 77.0 | |
| Sept. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | N/A | 28.8 μg/m3 (86) | 86.0 | |
| Sept. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 20.0 μg/m3 (67) | 67.0 | |
| Sept. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 17.0 μg/m3 (61) | 61.0 | |
| Sept. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 16.3 μg/m3 (59) | 59.0 | |
| Sept. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | N/A | 16.4 μg/m3 (59) | 59.0 | |
| Sept. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | N/A | 17.2 μg/m3 (61) | 61.0 | |
| Sept. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (47) | N/A | N/A | 18.0 μg/m3 (63) | 63.0 | |
| Sept. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | N/A | 17.7 μg/m3 (62) | 62.0 | |
| Sept. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 17.0 μg/m3 (61) | 61.0 | |
| Sept. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 16.5 μg/m3 (60) | 60.0 | |
| Sept. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 17.9 μg/m3 (63) | 63.0 | |
| Sept. 23, 2020, 2 p.m. | 10.6 ppb (10) | 2.0 ppb (2) | N/A | 9.0 ppb (8) | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 18.2 μg/m3 (63) | 63.0 | |
| Sept. 23, 2020, 1 p.m. | 21.3 ppb (20) | 3.6 ppb (3) | N/A | 18.0 ppb (17) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 22.0 μg/m3 (71) | 71.0 | |
| Sept. 23, 2020, noon | 32.6 ppb (30) | 6.2 ppb (6) | N/A | 27.0 ppb (25) | N/A | N/A | 8.0 ppb (6) | N/A | N/A | 26.1 μg/m3 (80) | 80.0 | |
| Sept. 23, 2020, 11 a.m. | 12.5 ppb (12) | 0.3 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 23.9 μg/m3 (75) | 75.0 | |
| Sept. 23, 2020, 10 a.m. | 4.4 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 22.3 μg/m3 (72) | 72.0 | |
| Sept. 23, 2020, 9 a.m. | 4.1 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 20.1 μg/m3 (67) | 67.0 | |
| Sept. 23, 2020, 8 a.m. | 4.2 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 18.0 μg/m3 (63) | 63.0 | |
| Sept. 23, 2020, 7 a.m. | 5.2 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 16.0 μg/m3 (59) | 59.0 | |
| Sept. 23, 2020, 6 a.m. | 4.6 ppb (4) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 13.0 μg/m3 (52) | 52.0 | |
| Sept. 23, 2020, 5 a.m. | 3.0 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 12.4 μg/m3 (51) | 51.0 | |
| Sept. 23, 2020, 4 a.m. | 4.6 ppb (4) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 11.8 μg/m3 (49) | 49.0 | |
| Sept. 23, 2020, 3 a.m. | 17.9 ppb (17) | 0.2 ppb (0) | N/A | 18.0 ppb (17) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 12.1 μg/m3 (50) | 50.0 | |
| Sept. 23, 2020, 2 a.m. | 6.4 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 44.0 ppb (34) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Sept. 23, 2020, 1 a.m. | 2.3 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 9.7 μg/m3 (40) | 40.0 | |
| Sept. 23, 2020, midnight | 5.0 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 10.5 μg/m3 (44) | 44.0 | |
| Sept. 22, 2020, 11 p.m. | 5.7 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| Sept. 22, 2020, 10 p.m. | 5.0 ppb (5) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 10.4 μg/m3 (43) | 43.0 | |
| Sept. 22, 2020, 9 p.m. | 5.0 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 10.8 μg/m3 (45) | 45.0 | |
| Sept. 22, 2020, 8 p.m. | 4.6 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 10.7 μg/m3 (45) | 45.0 | |
| Sept. 22, 2020, 7 p.m. | 4.3 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 56.0 ppb (43) | N/A | N/A | 10.6 μg/m3 (44) | 44.0 | |
| Sept. 22, 2020, 6 p.m. | 2.7 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 10.3 μg/m3 (43) | 43.0 | |
| Sept. 22, 2020, 5 p.m. | 2.8 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 10.8 μg/m3 (45) | 45.0 | |
| Sept. 22, 2020, 4 p.m. | 2.3 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Sept. 22, 2020, 3 p.m. | 2.6 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 10.4 μg/m3 (43) | 43.0 | |
| Sept. 22, 2020, 2 p.m. | 3.0 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 11.7 μg/m3 (49) | 49.0 | |
| Sept. 22, 2020, 1 p.m. | 3.4 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 12.7 μg/m3 (51) | 51.0 | |
| Sept. 22, 2020, noon | 3.1 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 13.5 μg/m3 (53) | 53.0 | |
| Sept. 22, 2020, 11 a.m. | 1.9 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 14.4 μg/m3 (55) | 55.0 | |
| Sept. 22, 2020, 10 a.m. | 1.4 ppb (1) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 15.3 μg/m3 (57) | 57.0 | |
| Sept. 22, 2020, 9 a.m. | 6.9 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 17.7 μg/m3 (62) | 62.0 | |
| Sept. 22, 2020, 8 a.m. | 9.8 ppb (9) | 0.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 19.8 μg/m3 (67) | 67.0 | |
| Sept. 22, 2020, 7 a.m. | 8.2 ppb (8) | 0.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 20.8 μg/m3 (69) | 69.0 | |
| Sept. 22, 2020, 6 a.m. | 18.0 ppb (17) | 0.3 ppb (0) | N/A | 18.0 ppb (17) | N/A | N/A | 24.0 ppb (18) | N/A | N/A | 27.7 μg/m3 (83) | 83.0 | |
| Sept. 22, 2020, 5 a.m. | 18.4 ppb (17) | 0.3 ppb (0) | N/A | 18.0 ppb (17) | N/A | N/A | 26.0 ppb (20) | N/A | N/A | 27.0 μg/m3 (82) | 82.0 | |
| Sept. 22, 2020, 4 a.m. | 27.5 ppb (25) | 0.3 ppb (0) | N/A | 27.0 ppb (25) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 28.6 μg/m3 (85) | 85.0 | |
| Sept. 22, 2020, 3 a.m. | 8.6 ppb (8) | 0.3 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 41.0 ppb (32) | N/A | N/A | 14.4 μg/m3 (55) | 55.0 | |
| Sept. 22, 2020, 2 a.m. | 6.6 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 16.4 μg/m3 (59) | 59.0 | |
| Sept. 22, 2020, 1 a.m. | 9.0 ppb (8) | 0.4 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 21.5 μg/m3 (70) | 70.0 | |
| Sept. 22, 2020, midnight | 16.1 ppb (15) | 0.2 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 24.9 μg/m3 (77) | 77.0 | |
| Sept. 21, 2020, 11 p.m. | 17.1 ppb (16) | 0.7 ppb (1) | N/A | 17.0 ppb (16) | N/A | N/A | 63.0 ppb (48) | N/A | N/A | 23.5 μg/m3 (74) | 74.0 | |
| Sept. 21, 2020, 10 p.m. | 8.5 ppb (8) | 0.6 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 76.0 ppb (59) | N/A | N/A | 23.7 μg/m3 (75) | 75.0 | |
| Sept. 21, 2020, 9 p.m. | 6.5 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 80.0 ppb (62) | N/A | N/A | 24.5 μg/m3 (77) | 77.0 | |
| Sept. 21, 2020, 8 p.m. | 9.1 ppb (8) | 1.0 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | 74.0 ppb (57) | N/A | N/A | 21.6 μg/m3 (70) | 70.0 | |
| Sept. 21, 2020, 7 p.m. | 12.0 ppb (11) | 1.7 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | 69.0 ppb (53) | N/A | N/A | 24.1 μg/m3 (76) | 76.0 | |
| Sept. 21, 2020, 6 p.m. | 12.7 ppb (12) | 2.2 ppb (2) | N/A | 11.0 ppb (10) | N/A | N/A | 60.0 ppb (46) | N/A | N/A | 25.9 μg/m3 (80) | 80.0 | |
| Sept. 21, 2020, 5 p.m. | 12.3 ppb (11) | 2.5 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 28.6 μg/m3 (85) | 85.0 | |
| Sept. 21, 2020, 4 p.m. | 18.2 ppb (17) | 4.0 ppb (4) | N/A | 15.0 ppb (14) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 29.2 μg/m3 (87) | 87.0 | |
| Sept. 21, 2020, 3 p.m. | 34.9 ppb (32) | 9.7 ppb (9) | N/A | 26.0 ppb (24) | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 32.9 μg/m3 (94) | 94.0 | |
| Sept. 21, 2020, 2 p.m. | 26.2 ppb (24) | 6.1 ppb (6) | N/A | 21.0 ppb (19) | N/A | N/A | 30.0 ppb (23) | N/A | N/A | 33.5 μg/m3 (96) | 96.0 | |
| Sept. 21, 2020, 1 p.m. | 26.7 ppb (25) | 5.7 ppb (5) | N/A | 21.0 ppb (19) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 33.3 μg/m3 (95) | 95.0 | |
| Sept. 21, 2020, noon | 25.9 ppb (24) | 4.1 ppb (4) | N/A | 22.0 ppb (20) | N/A | N/A | 10.0 ppb (8) | N/A | N/A | 34.5 μg/m3 (98) | 98.0 | |
| Sept. 21, 2020, 11 a.m. | 12.8 ppb (12) | 0.3 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 33.9 μg/m3 (97) | 97.0 | |
| Sept. 21, 2020, 10 a.m. | 9.7 ppb (9) | 0.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 32.8 μg/m3 (94) | 94.0 | |
| Sept. 21, 2020, 9 a.m. | 10.8 ppb (10) | 0.2 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 19.0 ppb (15) | N/A | N/A | 32.6 μg/m3 (94) | 94.0 | |
| Sept. 21, 2020, 8 a.m. | 6.5 ppb (6) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 28.0 ppb (22) | N/A | N/A | 31.7 μg/m3 (92) | 92.0 | |
| Sept. 21, 2020, 7 a.m. | 5.4 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 30.4 μg/m3 (89) | 89.0 | |
| Sept. 21, 2020, 6 a.m. | 6.1 ppb (6) | 0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 29.4 μg/m3 (87) | 87.0 | |
| Sept. 21, 2020, 5 a.m. | 6.2 ppb (6) | 0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 31.0 ppb (24) | N/A | N/A | 27.4 μg/m3 (83) | 83.0 | |
| Sept. 21, 2020, 4 a.m. | 5.5 ppb (5) | 0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 26.8 μg/m3 (81) | 81.0 | |
| Sept. 21, 2020, 3 a.m. | 8.7 ppb (8) | 0.2 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 25.9 μg/m3 (80) | 80.0 | |
| Sept. 21, 2020, 2 a.m. | 7.4 ppb (7) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 24.6 μg/m3 (77) | 77.0 | |
| Sept. 21, 2020, 1 a.m. | 6.7 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 24.3 μg/m3 (76) | 76.0 | |
| Sept. 21, 2020, midnight | 10.2 ppb (9) | 0.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 22.6 μg/m3 (73) | 73.0 | |
| Sept. 20, 2020, 11 p.m. | 5.5 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 61.0 ppb (47) | N/A | N/A | 21.9 μg/m3 (71) | 71.0 | |
| Sept. 20, 2020, 10 p.m. | 3.5 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 68.0 ppb (52) | N/A | N/A | 21.7 μg/m3 (71) | 71.0 | |
| Sept. 20, 2020, 9 p.m. | 3.2 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 64.0 ppb (49) | N/A | N/A | 21.0 μg/m3 (69) | 69.0 | |
| Sept. 20, 2020, 8 p.m. | 2.9 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 58.0 ppb (45) | N/A | N/A | 21.5 μg/m3 (70) | 70.0 | |
| Sept. 20, 2020, 7 p.m. | 3.3 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 57.0 ppb (44) | N/A | N/A | 22.3 μg/m3 (72) | 72.0 | |
| Sept. 20, 2020, 6 p.m. | 3.8 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 22.5 μg/m3 (72) | 72.0 | |
| Sept. 20, 2020, 5 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 21.8 μg/m3 (71) | 71.0 | |
| Sept. 20, 2020, 4 p.m. | 9.6 ppb (9) | 2.0 ppb (2) | N/A | 8.0 ppb (7) | N/A | N/A | 43.0 ppb (33) | N/A | N/A | 23.1 μg/m3 (74) | 74.0 | |
| Sept. 20, 2020, 3 p.m. | 20.4 ppb (19) | 6.3 ppb (6) | N/A | 14.0 ppb (13) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 27.7 μg/m3 (83) | 83.0 | |
| Sept. 20, 2020, 2 p.m. | 26.0 ppb (24) | 9.0 ppb (8) | N/A | 17.0 ppb (16) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 29.8 μg/m3 (88) | 88.0 | |
| Sept. 20, 2020, 1 p.m. | 15.2 ppb (14) | 3.6 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 27.5 μg/m3 (83) | 83.0 | |
| Sept. 20, 2020, noon | 10.8 ppb (10) | 0.9 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 25.7 μg/m3 (79) | 79.0 | |
| Sept. 20, 2020, 11 a.m. | 9.0 ppb (8) | 0.0 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 11.0 ppb (8) | N/A | N/A | 24.9 μg/m3 (77) | 77.0 | |
| Sept. 20, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | N/A | 24.5 μg/m3 (77) | 77.0 | |
| Sept. 20, 2020, 9 a.m. | 9.9 ppb (9) | 0.4 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 22.1 μg/m3 (71) | 71.0 | |
| Sept. 20, 2020, 8 a.m. | 9.9 ppb (9) | 0.4 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 19.7 μg/m3 (66) | 66.0 | |
| Sept. 20, 2020, 7 a.m. | 10.8 ppb (10) | 0.6 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 15.0 ppb (12) | N/A | N/A | 18.3 μg/m3 (63) | 63.0 | |
| Sept. 20, 2020, 6 a.m. | 12.2 ppb (11) | 0.3 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 18.7 μg/m3 (64) | 64.0 | |
| Sept. 20, 2020, 5 a.m. | 13.7 ppb (13) | 0.4 ppb (0) | N/A | 14.0 ppb (13) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 24.4 μg/m3 (76) | 76.0 | |
| Sept. 20, 2020, 4 a.m. | 15.1 ppb (14) | 0.4 ppb (0) | N/A | 15.0 ppb (14) | N/A | N/A | 16.0 ppb (12) | N/A | N/A | 25.3 μg/m3 (78) | 78.0 | |
| Sept. 20, 2020, 3 a.m. | 16.1 ppb (15) | 0.4 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 23.8 μg/m3 (75) | 75.0 | |
| Sept. 20, 2020, 2 a.m. | 15.3 ppb (14) | 0.4 ppb (0) | N/A | 15.0 ppb (14) | N/A | N/A | 18.0 ppb (14) | N/A | N/A | 25.4 μg/m3 (79) | 79.0 | |
| Sept. 20, 2020, 1 a.m. | 14.7 ppb (14) | 0.7 ppb (1) | N/A | 14.0 ppb (13) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 24.3 μg/m3 (76) | 76.0 | |
| Sept. 20, 2020, midnight | 5.8 ppb (5) | 0.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 22.0 μg/m3 (71) | 71.0 | |
| Sept. 19, 2020, 11 p.m. | 3.2 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 46.0 ppb (35) | N/A | N/A | 21.9 μg/m3 (71) | 71.0 | |
| Sept. 19, 2020, 10 p.m. | 3.2 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 22.5 μg/m3 (72) | 72.0 | |
| Sept. 19, 2020, 9 p.m. | 3.9 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 25.0 μg/m3 (78) | 78.0 | |
| Sept. 19, 2020, 8 p.m. | 3.8 ppb (4) | 0.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 26.0 μg/m3 (80) | 80.0 | |
| Sept. 19, 2020, 7 p.m. | 7.1 ppb (7) | 1.1 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 27.2 μg/m3 (82) | 82.0 | |
| Sept. 19, 2020, 6 p.m. | 3.0 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 24.5 μg/m3 (77) | 77.0 | |
| Sept. 19, 2020, 5 p.m. | 4.4 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 27.2 μg/m3 (82) | 82.0 | |
| Sept. 19, 2020, 4 p.m. | 11.0 ppb (10) | 0.9 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 33.4 μg/m3 (96) | 96.0 | |
| Sept. 19, 2020, 3 p.m. | 8.0 ppb (7) | 0.8 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 36.0 μg/m3 (101) | 101.0 | |
| Sept. 19, 2020, 2 p.m. | 6.7 ppb (6) | 0.4 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 34.5 μg/m3 (98) | 98.0 | |
| Sept. 19, 2020, 1 p.m. | 4.2 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 41.8 μg/m3 (116) | 116.0 | |
| Sept. 19, 2020, noon | 5.3 ppb (5) | 0.4 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 38.0 ppb (29) | N/A | N/A | 44.1 μg/m3 (122) | 122.0 | |
| Sept. 19, 2020, 11 a.m. | 3.3 ppb (3) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 39.0 ppb (30) | N/A | N/A | 41.9 μg/m3 (116) | 116.0 | |
| Sept. 19, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | N/A | 46.9 μg/m3 (128) | 128.0 | |
| Sept. 19, 2020, 9 a.m. | 4.6 ppb (4) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 42.7 μg/m3 (118) | 118.0 | |
| Sept. 19, 2020, 8 a.m. | 2.9 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 42.0 ppb (32) | N/A | N/A | 31.1 μg/m3 (91) | 91.0 | |
| Sept. 19, 2020, 7 a.m. | 1.4 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 58.0 ppb (45) | N/A | N/A | 20.0 μg/m3 (67) | 67.0 | |
| Sept. 19, 2020, 6 a.m. | 3.5 ppb (3) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 22.6 μg/m3 (73) | 73.0 | |
| Sept. 19, 2020, 5 a.m. | 2.0 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (42) | N/A | N/A | 25.5 μg/m3 (79) | 79.0 | |
| Sept. 19, 2020, 4 a.m. | 2.8 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 54.0 ppb (42) | N/A | N/A | 24.5 μg/m3 (77) | 77.0 | |
| Sept. 19, 2020, 3 a.m. | 3.5 ppb (3) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 19.3 μg/m3 (66) | 66.0 | |
| Sept. 19, 2020, 2 a.m. | 22.4 ppb (21) | 0.2 ppb (0) | N/A | 23.0 ppb (21) | N/A | N/A | 29.0 ppb (22) | N/A | N/A | 17.6 μg/m3 (62) | 62.0 | |
| Sept. 19, 2020, 1 a.m. | 4.0 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 49.0 ppb (38) | N/A | N/A | 15.7 μg/m3 (58) | 58.0 | |
| Sept. 19, 2020, midnight | 3.3 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (39) | N/A | N/A | 17.0 μg/m3 (61) | 61.0 | |
| Sept. 18, 2020, 11 p.m. | 3.2 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 15.4 μg/m3 (57) | 57.0 | |
| Sept. 18, 2020, 10 p.m. | 4.3 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 52.0 ppb (40) | N/A | N/A | 13.1 μg/m3 (52) | 52.0 | |
| Sept. 18, 2020, 9 p.m. | 3.7 ppb (3) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 53.0 ppb (41) | N/A | N/A | 14.8 μg/m3 (56) | 56.0 | |
| Sept. 18, 2020, 8 p.m. | 8.0 ppb (7) | 0.8 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | 50.0 ppb (38) | N/A | N/A | 17.4 μg/m3 (61) | 61.0 | |
| Sept. 18, 2020, 7 p.m. | 13.1 ppb (12) | 1.4 ppb (1) | N/A | 12.0 ppb (11) | N/A | N/A | 48.0 ppb (37) | N/A | N/A | 19.2 μg/m3 (65) | 65.0 | |
| Sept. 18, 2020, 6 p.m. | 15.9 ppb (15) | 2.3 ppb (2) | N/A | 14.0 ppb (13) | N/A | N/A | 45.0 ppb (35) | N/A | N/A | 20.2 μg/m3 (67) | 67.0 | |
| Sept. 18, 2020, 5 p.m. | 17.4 ppb (16) | 3.3 ppb (3) | N/A | 15.0 ppb (14) | N/A | N/A | 40.0 ppb (31) | N/A | N/A | 21.8 μg/m3 (71) | 71.0 | |
| Sept. 18, 2020, 4 p.m. | 25.5 ppb (24) | 5.1 ppb (5) | N/A | 21.0 ppb (19) | N/A | N/A | 32.0 ppb (25) | N/A | N/A | 22.1 μg/m3 (71) | 71.0 | |
| Sept. 18, 2020, 3 p.m. | 70.2 ppb (67) | 29.7 ppb (28) | N/A | 41.0 ppb (38) | N/A | N/A | 14.0 ppb (11) | N/A | N/A | 26.3 μg/m3 (80) | 80.0 | |
| Sept. 18, 2020, 2 p.m. | 52.7 ppb (49) | 19.5 ppb (18) | N/A | 33.0 ppb (31) | N/A | N/A | 12.0 ppb (9) | N/A | N/A | 26.4 μg/m3 (81) | 81.0 | |
| Sept. 18, 2020, 1 p.m. | 32.1 ppb (30) | 6.8 ppb (6) | N/A | 26.0 ppb (24) | N/A | N/A | 17.0 ppb (13) | N/A | N/A | 25.8 μg/m3 (79) | 79.0 | |
| Sept. 18, 2020, noon | 16.6 ppb (15) | 0.4 ppb (0) | N/A | 17.0 ppb (16) | N/A | N/A | 22.0 ppb (17) | N/A | N/A | 23.3 μg/m3 (74) | 74.0 | |
| Sept. 18, 2020, 11 a.m. | 13.7 ppb (13) | 0.7 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | 25.0 ppb (19) | N/A | N/A | 22.8 μg/m3 (73) | 73.0 | |
| Sept. 18, 2020, 10 a.m. | 11.4 ppb (11) | 0.3 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | 21.7 μg/m3 (71) | 71.0 | |
| Sept. 18, 2020, 9 a.m. | 4.6 ppb (4) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 37.0 ppb (28) | N/A | N/A | 23.5 μg/m3 (74) | 74.0 | |
| Sept. 18, 2020, 8 a.m. | 6.8 ppb (6) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 34.0 ppb (26) | N/A | N/A | 22.3 μg/m3 (72) | 72.0 | |
| Sept. 18, 2020, 7 a.m. | 11.1 ppb (10) | 0.3 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 27.0 ppb (21) | N/A | N/A | 21.1 μg/m3 (69) | 69.0 | |
| Sept. 18, 2020, 6 a.m. | 15.7 ppb (15) | 0.3 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | 21.0 ppb (16) | N/A | N/A | 21.3 μg/m3 (70) | 70.0 | |
| Sept. 18, 2020, 5 a.m. | 16.3 ppb (15) | 0.3 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | 23.0 ppb (18) | N/A | N/A | 20.9 μg/m3 (69) | 69.0 |