AQSQID: 211110051

Site Name: Watson

Location: Louisville (Wilken Way), KY

Reporting: True, Located: True

Current AQI: 21.0

Louisville (Wilken Way) KY, US: 38.0608, -85.8961

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.2 μg/m3 (22) 22.0
 
Jan. 24, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Jan. 24, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 24, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
Jan. 24, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 24, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Jan. 24, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 7.2 μg/m3 (30) 30.0
 
Jan. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
Jan. 23, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Jan. 23, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
Jan. 23, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 22.0 μg/m3 (20) 12.2 μg/m3 (50) 50.0
 
Jan. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 29.0 μg/m3 (26) 16.6 μg/m3 (60) 60.0
 
Jan. 23, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 27.0 μg/m3 (25) 15.5 μg/m3 (57) 57.0
 
Jan. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 36.0 μg/m3 (33) 22.1 μg/m3 (71) 71.0
 
Jan. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 40.0 μg/m3 (36) 24.6 μg/m3 (77) 77.0
 
Jan. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 32.0 μg/m3 (29) 19.4 μg/m3 (66) 66.0
 
Jan. 23, 2020, noon N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 37.0 μg/m3 (34) 24.0 μg/m3 (76) 76.0
 
Jan. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 59.0 μg/m3 (52) 41.6 μg/m3 (115) 115.0
 
Jan. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 56.0 μg/m3 (50) 41.4 μg/m3 (115) 115.0
 
Jan. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 μg/m3 (39) 31.4 μg/m3 (91) 91.0
 
Jan. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 27.0 μg/m3 (82) 82.0
 
Jan. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 36.0 μg/m3 (33) 27.8 μg/m3 (84) 84.0
 
Jan. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 μg/m3 (35) 29.6 μg/m3 (87) 87.0
 
Jan. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 μg/m3 (36) 30.9 μg/m3 (90) 90.0
 
Jan. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 43.0 μg/m3 (39) 32.1 μg/m3 (93) 93.0
 
Jan. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 μg/m3 (36) 27.0 μg/m3 (82) 82.0
 
Jan. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 μg/m3 (40) 28.9 μg/m3 (86) 86.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 34.0 μg/m3 (31) 19.8 μg/m3 (67) 67.0
 
Jan. 23, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 16.2 μg/m3 (59) 59.0
 
Jan. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
Jan. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.2 μg/m3 (34) 34.0
 
Jan. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Jan. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
Jan. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A 28.0 μg/m3 (25) 11.2 μg/m3 (47) 47.0
 
Jan. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) N/A N/A 43.0 μg/m3 (39) 14.2 μg/m3 (55) 55.0
 
Jan. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 30.0 μg/m3 (27) 14.5 μg/m3 (55) 55.0
 
Jan. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 35.0 μg/m3 (32) 17.6 μg/m3 (62) 62.0
 
Jan. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 36.0 μg/m3 (33) 20.9 μg/m3 (69) 69.0
 
Jan. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 36.0 μg/m3 (33) 21.8 μg/m3 (71) 71.0
 
Jan. 22, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 μg/m3 (35) 25.5 μg/m3 (79) 79.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 50.0 μg/m3 (45) 33.7 μg/m3 (96) 96.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 47.0 μg/m3 (43) 29.5 μg/m3 (87) 87.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 50.0 μg/m3 (45) 27.0 μg/m3 (82) 82.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.0 μg/m3 (33) 28.4 μg/m3 (85) 85.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 30.0 μg/m3 (27) 24.4 μg/m3 (76) 76.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 μg/m3 (34) 21.4 μg/m3 (70) 70.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 29.0 μg/m3 (26) 20.1 μg/m3 (67) 67.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 27.0 μg/m3 (25) 22.5 μg/m3 (72) 72.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 20.2 μg/m3 (67) 67.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 28.0 μg/m3 (25) 21.9 μg/m3 (71) 71.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 32.0 μg/m3 (29) 25.4 μg/m3 (79) 79.0
 
Jan. 22, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 28.0 μg/m3 (25) 19.4 μg/m3 (66) 66.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 21.0 μg/m3 (19) 13.2 μg/m3 (53) 53.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 11.4 μg/m3 (48) 48.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.8 μg/m3 (45) 45.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 10.8 μg/m3 (45) 45.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.4 μg/m3 (35) 35.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Jan. 21, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 23.0 μg/m3 (21) 18.7 μg/m3 (64) 64.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 27.0 μg/m3 (25) 22.4 μg/m3 (72) 72.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 20.7 μg/m3 (69) 69.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 μg/m3 (39) 32.6 μg/m3 (94) 94.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 27.0 μg/m3 (25) 23.0 μg/m3 (73) 73.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 30.0 μg/m3 (27) 24.8 μg/m3 (77) 77.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 22.0 μg/m3 (20) 18.2 μg/m3 (63) 63.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 20.0 μg/m3 (18) 16.0 μg/m3 (59) 59.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (17) 14.7 μg/m3 (56) 56.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (17) 13.6 μg/m3 (53) 53.0
 
Jan. 21, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 11.6 μg/m3 (48) 48.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (16) 12.1 μg/m3 (50) 50.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 10.2 μg/m3 (42) 42.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 9.9 μg/m3 (41) 41.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 9.2 μg/m3 (38) 38.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
Jan. 20, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.3 μg/m3 (39) 39.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.5 μg/m3 (35) 35.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 7.5 μg/m3 (31) 31.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 7.7 μg/m3 (32) 32.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.9 μg/m3 (37) 37.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 8.5 μg/m3 (35) 35.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 7.8 μg/m3 (32) 32.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.5 μg/m3 (31) 31.0
 
Jan. 20, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.2 μg/m3 (34) 34.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.8 μg/m3 (32) 32.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 5.8 μg/m3 (24) 24.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.3 μg/m3 (26) 26.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.9 μg/m3 (29) 29.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.8 μg/m3 (28) 28.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 5.8 μg/m3 (24) 24.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 20.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 3.9 μg/m3 (16) 16.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 15.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 14.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 15.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 13.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A 19.0 μg/m3 (17) 7.1 μg/m3 (30) 30.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A 22.0 μg/m3 (20) 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 20.0 μg/m3 (18) 8.5 μg/m3 (35) 35.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 9.2 μg/m3 (38) 38.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.9 μg/m3 (29) 29.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 7.7 μg/m3 (32) 32.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.7 μg/m3 (36) 36.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (13) 9.4 μg/m3 (39) 39.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.4 μg/m3 (43) 43.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.5 μg/m3 (44) 44.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (16) 13.9 μg/m3 (54) 54.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 21.0 μg/m3 (19) 15.9 μg/m3 (58) 58.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 22.0 μg/m3 (20) 17.7 μg/m3 (62) 62.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 24.0 μg/m3 (22) 18.4 μg/m3 (64) 64.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 19.1 μg/m3 (65) 65.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 25.0 μg/m3 (23) 19.1 μg/m3 (65) 65.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 24.0 μg/m3 (22) 17.7 μg/m3 (62) 62.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (20) 15.5 μg/m3 (57) 57.0