Libby MT, US: 48.3841, -115.548
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 3.7 μg/m3 (15) | 15.0 | |
| Jan. 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 5.6 μg/m3 (23) | 23.0 | |
| Jan. 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 19.6 μg/m3 (66) | 66.0 | |
| Jan. 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 24.3 μg/m3 (76) | 76.0 | |
| Jan. 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 16.4 μg/m3 (59) | 59.0 | |
| Jan. 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 16.8 μg/m3 (60) | 60.0 | |
| Jan. 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 22.7 μg/m3 (73) | 73.0 | |
| Jan. 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 μg/m3 (24) | 24.9 μg/m3 (77) | 77.0 | |
| Jan. 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 22.1 μg/m3 (71) | 71.0 | |
| Jan. 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 14.5 μg/m3 (55) | 55.0 | |
| Jan. 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 12.8 μg/m3 (52) | 52.0 | |
| Jan. 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 10.4 μg/m3 (43) | 43.0 | |
| Jan. 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 10.5 μg/m3 (44) | 44.0 | |
| Jan. 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 8.6 μg/m3 (36) | 36.0 | |
| Jan. 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 17.9 μg/m3 (63) | 63.0 | |
| Jan. 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 26.5 μg/m3 (81) | 81.0 | |
| Jan. 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 19.4 μg/m3 (66) | 66.0 | |
| Jan. 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 1.3 μg/m3 (5) | 16.0 | |
| Jan. 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 18.5 μg/m3 (64) | 64.0 | |
| Jan. 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 23.4 μg/m3 (74) | 74.0 | |
| Jan. 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 20.2 μg/m3 (67) | 67.0 | |
| Jan. 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 19.1 μg/m3 (65) | 65.0 | |
| Jan. 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 μg/m3 (27) | 29.5 μg/m3 (87) | 87.0 | |
| Jan. 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 μg/m3 (34) | 36.9 μg/m3 (104) | 104.0 | |
| Jan. 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (32) | 30.9 μg/m3 (90) | 90.0 | |
| Jan. 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 μg/m3 (31) | 31.2 μg/m3 (91) | 91.0 | |
| Jan. 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 μg/m3 (39) | 38.2 μg/m3 (107) | 107.0 | |
| Jan. 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 μg/m3 (38) | 43.8 μg/m3 (121) | 121.0 | |
| Jan. 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 μg/m3 (48) | 49.6 μg/m3 (135) | 135.0 | |
| Jan. 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 μg/m3 (46) | 51.0 μg/m3 (139) | 139.0 | |
| Jan. 19, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 μg/m3 (35) | 37.8 μg/m3 (106) | 106.0 | |
| Jan. 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 μg/m3 (25) | 27.2 μg/m3 (82) | 82.0 | |
| Jan. 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 28.0 μg/m3 (84) | 84.0 | |
| Jan. 18, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 12.3 μg/m3 (51) | 51.0 | |
| Jan. 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 11.2 μg/m3 (47) | 47.0 | |
| Jan. 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 13.6 μg/m3 (53) | 53.0 | |
| Jan. 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (19) | 14.4 μg/m3 (55) | 55.0 | |
| Jan. 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 18.2 μg/m3 (63) | 63.0 | |
| Jan. 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 27.7 μg/m3 (83) | 83.0 | |
| Jan. 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 23.9 μg/m3 (75) | 75.0 | |
| Jan. 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 16.8 μg/m3 (60) | 60.0 | |
| Jan. 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 18.3 μg/m3 (63) | 63.0 | |
| Jan. 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 μg/m3 (23) | 23.8 μg/m3 (75) | 75.0 | |
| Jan. 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 μg/m3 (32) | 31.5 μg/m3 (91) | 91.0 | |
| Jan. 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (44) | 48.6 μg/m3 (133) | 133.0 | |
| Jan. 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 μg/m3 (47) | 49.4 μg/m3 (135) | 135.0 | |
| Jan. 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (41) | 43.6 μg/m3 (120) | 120.0 | |
| Jan. 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 41.7 μg/m3 (116) | 116.0 | |
| Jan. 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 μg/m3 (41) | 38.3 μg/m3 (107) | 107.0 | |
| Jan. 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 μg/m3 (42) | 44.1 μg/m3 (122) | 122.0 | |
| Jan. 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (44) | 45.0 μg/m3 (124) | 124.0 | |
| Jan. 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 40.0 μg/m3 (111) | 111.0 | |
| Jan. 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 μg/m3 (33) | 32.4 μg/m3 (93) | 93.0 | |
| Jan. 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 μg/m3 (21) | 27.1 μg/m3 (82) | 82.0 | |
| Jan. 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 21.3 μg/m3 (70) | 70.0 | |
| Jan. 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 12.5 μg/m3 (51) | 51.0 | |
| Jan. 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 10.1 μg/m3 (42) | 42.0 | |
| Jan. 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 8.1 μg/m3 (34) | 34.0 | |
| Jan. 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 11.2 μg/m3 (47) | 47.0 | |
| Jan. 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 15.0 μg/m3 (56) | 56.0 | |
| Jan. 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 18.8 μg/m3 (64) | 64.0 | |
| Jan. 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 12.8 μg/m3 (52) | 52.0 | |
| Jan. 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 11.5 μg/m3 (48) | 48.0 | |
| Jan. 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 10.4 μg/m3 (43) | 43.0 | |
| Jan. 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 14.5 μg/m3 (55) | 55.0 | |
| Jan. 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 17.2 μg/m3 (61) | 61.0 | |
| Jan. 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 29.1 μg/m3 (86) | 86.0 | |
| Jan. 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 29.7 μg/m3 (88) | 88.0 | |
| Jan. 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 μg/m3 (28) | 19.7 μg/m3 (66) | 66.0 | |
| Jan. 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 15.4 μg/m3 (57) | 57.0 | |
| Jan. 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 18.9 μg/m3 (65) | 65.0 | |
| Jan. 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 μg/m3 (36) | 22.0 μg/m3 (71) | 71.0 | |
| Jan. 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 μg/m3 (52) | 22.2 μg/m3 (72) | 72.0 | |
| Jan. 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 μg/m3 (54) | 22.3 μg/m3 (72) | 72.0 | |
| Jan. 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 79.0 μg/m3 (62) | 27.4 μg/m3 (83) | 83.0 | |
| Jan. 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 μg/m3 (36) | 8.4 μg/m3 (35) | 36.0 | |
| Jan. 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | -2.3 μg/m3 (0) | 14.0 | |
| Jan. 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 0.9 μg/m3 (4) | 12.0 | |
| Jan. 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 1.0 μg/m3 (4) | 12.0 | |
| Jan. 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | -2.9 μg/m3 (0) | 4.0 | |
| Jan. 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 0.0 μg/m3 (0) | 9.0 | |
| Jan. 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 5.9 μg/m3 (25) | 25.0 | |
| Jan. 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 μg/m3 (26) | 25.1 μg/m3 (78) | 78.0 | |
| Jan. 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 7.7 μg/m3 (32) | 32.0 | |
| Jan. 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 8.5 μg/m3 (35) | 35.0 | |
| Jan. 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 12.7 μg/m3 (51) | 51.0 | |
| Jan. 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 6.7 μg/m3 (28) | 28.0 | |
| Jan. 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 8.5 μg/m3 (35) | 35.0 | |
| Jan. 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 9.8 μg/m3 (41) | 41.0 | |
| Jan. 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 15.4 μg/m3 (57) | 57.0 | |
| Jan. 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 7.1 μg/m3 (30) | 30.0 | |
| Jan. 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 4.1 μg/m3 (17) | 20.0 | |
| Jan. 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 6.1 μg/m3 (25) | 25.0 | |
| Jan. 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 1.0 μg/m3 (4) | 12.0 | |
| Jan. 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 0.5 μg/m3 (2) | 13.0 | |
| Jan. 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 2.7 μg/m3 (11) | 16.0 | |
| Jan. 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 0.7 μg/m3 (3) | 10.0 | |
| Jan. 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 3.9 μg/m3 (16) | 16.0 | |
| Jan. 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 3.1 μg/m3 (13) | 13.0 | |
| Jan. 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 4.4 μg/m3 (18) | 18.0 | |
| Jan. 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 0.4 μg/m3 (2) | 5.0 | |
| Jan. 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 4.9 μg/m3 (20) | 20.0 | |
| Jan. 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 1.1 μg/m3 (5) | 5.0 | |
| Jan. 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.8 μg/m3 (20) | 20.0 | |
| Jan. 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 6.2 μg/m3 (26) | 26.0 | |
| Jan. 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 7.4 μg/m3 (31) | 31.0 | |
| Jan. 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 9.1 μg/m3 (38) | 38.0 | |
| Jan. 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 6.1 μg/m3 (25) | 25.0 | |
| Jan. 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 μg/m3 (20) | 9.6 μg/m3 (40) | 40.0 | |
| Jan. 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 6.3 μg/m3 (26) | 26.0 | |
| Jan. 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 1.7 μg/m3 (7) | 15.0 | |
| Jan. 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 4.5 μg/m3 (19) | 19.0 | |
| Jan. 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 2.4 μg/m3 (10) | 16.0 | |
| Jan. 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 0.1 μg/m3 (0) | 15.0 | |
| Jan. 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 1.6 μg/m3 (7) | 16.0 | |
| Jan. 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 μg/m3 (15) | 4.3 μg/m3 (18) | 18.0 | |
| Jan. 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 2.4 μg/m3 (10) | 15.0 | |
| Jan. 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 1.4 μg/m3 (6) | 8.0 | |
| Jan. 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 2.1 μg/m3 (9) | 9.0 | |
| Jan. 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 3.2 μg/m3 (13) | 13.0 | |
| Jan. 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 1.6 μg/m3 (7) | 7.0 | |
| Jan. 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 2.6 μg/m3 (11) | 11.0 | |
| Jan. 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 1.8 μg/m3 (8) | 8.0 | |
| Jan. 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 2.9 μg/m3 (12) | 12.0 | |
| Jan. 14, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 4.7 μg/m3 (20) | 20.0 | |
| Jan. 14, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 3.3 μg/m3 (14) | 14.0 | |
| Jan. 14, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 5.2 μg/m3 (22) | 22.0 | |
| Jan. 14, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 4.9 μg/m3 (20) | 20.0 | |
| Jan. 14, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 1.5 μg/m3 (6) | 6.0 | |
| Jan. 14, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 4.3 μg/m3 (18) | 18.0 | |
| Jan. 14, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 1.7 μg/m3 (7) | 10.0 | |
| Jan. 14, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 4.4 μg/m3 (18) | 18.0 | |
| Jan. 14, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 7.7 μg/m3 (32) | 32.0 | |
| Jan. 13, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 6.5 μg/m3 (27) | 27.0 | |
| Jan. 13, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 2.5 μg/m3 (10) | 10.0 | |
| Jan. 13, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 0.0 μg/m3 (0) | 7.0 | |
| Jan. 13, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 2.5 μg/m3 (10) | 10.0 | |
| Jan. 13, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | -0.2 μg/m3 (0) | 6.0 | |
| Jan. 13, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 5.3 μg/m3 (22) | 22.0 | |
| Jan. 13, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (3) | 2.4 μg/m3 (10) | 10.0 | |
| Jan. 13, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | 4.6 μg/m3 (19) | 19.0 | |
| Jan. 13, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | -3.0 μg/m3 (0) | 5.5 μg/m3 (23) | 23.0 | |
| Jan. 13, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 13, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 μg/m3 (2) | 0.9 μg/m3 (4) | 4.0 |