AQSQID: 211110051

Site Name: Watson

Location: Louisville (Wilken Way), KY

Reporting: True, Located: True

Current AQI: 32.0

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
March 26, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 32.0
 
March 26, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 32.0
 
March 26, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 32.0
 
March 26, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 30.0
 
March 26, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 9.0 μg/m3 (8) 3.6 μg/m3 (15) 26.0
 
March 26, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
March 26, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 26, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 11.0 μg/m3 (10) 4.4 μg/m3 (18) 19.0
 
March 26, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 3.9 μg/m3 (16) 22.0
 
March 26, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 3.7 μg/m3 (15) 22.0
 
March 26, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 22.0
 
March 26, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 25.0
 
March 26, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 28.0
 
March 26, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 28.0
 
March 26, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 16.0 μg/m3 (15) 11.3 μg/m3 (47) 47.0
 
March 26, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 19.0 μg/m3 (17) 15.1 μg/m3 (57) 57.0
 
March 26, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 19.0 μg/m3 (17) 16.0 μg/m3 (59) 59.0
 
March 26, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 20.0 μg/m3 (18) 16.9 μg/m3 (60) 60.0
 
March 25, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 18.0 μg/m3 (16) 15.3 μg/m3 (57) 57.0
 
March 25, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 11.2 μg/m3 (47) 47.0
 
March 25, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 12.0 μg/m3 (11) 8.8 μg/m3 (37) 37.0
 
March 25, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
March 25, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
March 25, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 27.0
 
March 25, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 22.0
 
March 25, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A 20.0 μg/m3 (18) 15.3 μg/m3 (57) 57.0
 
March 25, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 22.0 μg/m3 (20) 17.1 μg/m3 (61) 61.0
 
March 25, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A 24.0 μg/m3 (22) 19.5 μg/m3 (66) 66.0
 
March 25, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) N/A 26.0 μg/m3 (24) 20.4 μg/m3 (68) 68.0
 
March 25, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A 34.0 μg/m3 (31) 18.3 μg/m3 (63) 63.0
 
March 25, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A 31.0 μg/m3 (28) 19.3 μg/m3 (66) 66.0
 
March 25, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 21.0 μg/m3 (19) 16.5 μg/m3 (60) 60.0
 
March 25, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 25.0 μg/m3 (23) 17.7 μg/m3 (62) 62.0
 
March 25, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 26.0 μg/m3 (24) 18.1 μg/m3 (63) 63.0
 
March 25, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 23.0 μg/m3 (21) 17.6 μg/m3 (62) 62.0
 
March 25, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A 25.0 μg/m3 (23) 19.2 μg/m3 (65) 65.0
 
March 25, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 24.0 μg/m3 (22) 17.8 μg/m3 (62) 62.0
 
March 24, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 49.0 μg/m3 (45) 36.4 μg/m3 (102) 102.0
 
March 24, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 77.0 μg/m3 (61) 35.9 μg/m3 (101) 101.0
 
March 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 83.0 μg/m3 (64) 45.0 μg/m3 (124) 124.0
 
March 24, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A 52.0 μg/m3 (47) 30.2 μg/m3 (89) 89.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A 40.0 μg/m3 (36) 25.7 μg/m3 (79) 79.0
 
March 24, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A 67.0 μg/m3 (56) 48.8 μg/m3 (133) 133.0
 
March 24, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A 58.0 μg/m3 (52) 38.1 μg/m3 (106) 106.0
 
March 24, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A 44.0 μg/m3 (40) 31.2 μg/m3 (91) 91.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A 64.0 μg/m3 (54) 49.1 μg/m3 (134) 134.0
 
March 24, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) N/A 66.0 μg/m3 (56) 51.1 μg/m3 (139) 139.0
 
March 24, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 35.0 μg/m3 (32) 25.7 μg/m3 (79) 79.0
 
March 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 23.0 μg/m3 (21) 16.6 μg/m3 (60) 60.0
 
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 50.0 ppb (38) N/A 27.0 μg/m3 (25) 21.5 μg/m3 (70) 70.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 56.0 ppb (43) N/A 30.0 μg/m3 (27) 25.2 μg/m3 (78) 78.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 46.0 ppb (35) N/A 26.0 μg/m3 (24) 21.5 μg/m3 (70) 70.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 42.0 ppb (32) N/A 12.0 μg/m3 (11) 7.0 μg/m3 (29) 32.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 40.0 ppb (31) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 31.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 10.0 μg/m3 (9) 5.3 μg/m3 (22) 30.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 29.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (29) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 29.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 4.9 μg/m3 (20) 27.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A 12.0 μg/m3 (11) 7.3 μg/m3 (30) 30.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A 20.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 19.0 μg/m3 (17) 10.4 μg/m3 (43) 43.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 38.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 36.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 16.0 μg/m3 (15) 9.2 μg/m3 (38) 38.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 15.0 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 18.0 μg/m3 (16) 12.0 μg/m3 (50) 50.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 22.0 μg/m3 (20) 14.9 μg/m3 (56) 56.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 21.0 μg/m3 (19) 15.8 μg/m3 (58) 58.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 22.0 μg/m3 (20) 16.8 μg/m3 (60) 60.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 23.0 μg/m3 (21) 16.2 μg/m3 (59) 59.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A 20.0 μg/m3 (18) 15.6 μg/m3 (58) 58.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 19.0 μg/m3 (17) 15.1 μg/m3 (57) 57.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A 22.0 μg/m3 (20) 15.9 μg/m3 (58) 58.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 22.0 μg/m3 (20) 16.1 μg/m3 (59) 59.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 23.0 μg/m3 (21) 16.4 μg/m3 (59) 59.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 20.0 μg/m3 (18) 14.9 μg/m3 (56) 56.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 19.0 μg/m3 (17) 14.0 μg/m3 (54) 54.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 18.0 μg/m3 (16) 13.4 μg/m3 (53) 53.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 17.0 μg/m3 (15) 12.7 μg/m3 (51) 51.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 17.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 17.0 μg/m3 (15) 12.5 μg/m3 (51) 51.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) N/A 17.0 μg/m3 (15) 12.6 μg/m3 (51) 51.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 13.0 μg/m3 (12) 9.9 μg/m3 (41) 41.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 12.0 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 13.0 μg/m3 (12) 9.7 μg/m3 (40) 40.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 21.0 μg/m3 (19) 16.7 μg/m3 (60) 60.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 23.0 μg/m3 (21) 18.5 μg/m3 (64) 64.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 23.0 μg/m3 (21) 19.4 μg/m3 (66) 66.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 24.0 μg/m3 (22) 20.4 μg/m3 (68) 68.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 27.0 μg/m3 (25) 21.7 μg/m3 (71) 71.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 26.0 μg/m3 (24) 20.9 μg/m3 (69) 69.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 22.0 μg/m3 (20) 18.8 μg/m3 (64) 64.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 21.0 μg/m3 (19) 17.1 μg/m3 (61) 61.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 20.0 μg/m3 (18) 15.0 μg/m3 (56) 56.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A 19.0 μg/m3 (17) 14.2 μg/m3 (55) 55.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A 14.0 μg/m3 (13) 10.7 μg/m3 (45) 45.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A 14.0 μg/m3 (13) 10.5 μg/m3 (44) 44.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 16.0 μg/m3 (15) 11.9 μg/m3 (50) 50.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) N/A 17.0 μg/m3 (15) 12.5 μg/m3 (51) 51.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 18.0 μg/m3 (16) 10.1 μg/m3 (42) 42.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 21.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 52.0 ppb (40) N/A 20.0 μg/m3 (18) 9.7 μg/m3 (40) 40.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 56.0 ppb (43) N/A 23.0 μg/m3 (21) 9.1 μg/m3 (38) 43.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (44) N/A 18.0 μg/m3 (16) 8.3 μg/m3 (35) 44.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 56.0 ppb (43) N/A N/A N/A 43.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) N/A 17.0 μg/m3 (15) 7.9 μg/m3 (33) 42.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 53.0 ppb (41) N/A 16.0 μg/m3 (15) 8.1 μg/m3 (34) 41.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 18.0 μg/m3 (16) 8.8 μg/m3 (37) 40.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 39.0 μg/m3 (35) 11.6 μg/m3 (48) 48.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 48.0 μg/m3 (44) 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 42.0 μg/m3 (38) 14.3 μg/m3 (55) 55.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) N/A 42.0 μg/m3 (38) 13.4 μg/m3 (53) 53.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 67.0 μg/m3 (56) 18.3 μg/m3 (63) 63.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A 81.0 μg/m3 (63) 20.0 μg/m3 (67) 67.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A 89.0 μg/m3 (67) 20.3 μg/m3 (68) 68.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 82.0 μg/m3 (64) 18.6 μg/m3 (64) 64.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 6.0 ppb (5) N/A 72.0 μg/m3 (58) 19.0 μg/m3 (65) 65.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A 42.0 μg/m3 (38) 20.5 μg/m3 (68) 68.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 6.0 ppb (5) N/A 50.0 μg/m3 (45) 22.9 μg/m3 (73) 73.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A 36.0 μg/m3 (33) 25.1 μg/m3 (78) 78.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A 38.0 μg/m3 (35) 24.6 μg/m3 (77) 77.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A 32.0 μg/m3 (29) 21.9 μg/m3 (71) 71.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) N/A 29.0 μg/m3 (26) 18.9 μg/m3 (65) 65.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 17.0 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 41.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) N/A 12.0 μg/m3 (11) 7.9 μg/m3 (33) 41.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 39.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 42.0 ppb (32) N/A 13.0 μg/m3 (12) 7.8 μg/m3 (32) 32.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 40.0 ppb (31) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 38.0 ppb (29) N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 38.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A 12.0 μg/m3 (11) 7.6 μg/m3 (32) 36.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 26.0 μg/m3 (24) 11.8 μg/m3 (49) 49.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A 54.0 μg/m3 (49) 17.4 μg/m3 (61) 61.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (8) N/A 77.0 μg/m3 (61) 18.8 μg/m3 (64) 64.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A 48.0 μg/m3 (44) 18.6 μg/m3 (64) 64.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 1.0 ppb (1) N/A 40.0 μg/m3 (36) 18.5 μg/m3 (64) 64.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 33.0 μg/m3 (30) 23.3 μg/m3 (74) 74.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 43.0 μg/m3 (39) 30.5 μg/m3 (89) 89.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 3.0 ppb (2) N/A 33.0 μg/m3 (30) 24.9 μg/m3 (77) 77.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 34.0 μg/m3 (31) 25.5 μg/m3 (79) 79.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 6.0 ppb (5) N/A 35.0 μg/m3 (32) 25.5 μg/m3 (79) 79.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) N/A 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (8) N/A 34.0 μg/m3 (31) 21.3 μg/m3 (70) 70.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A 21.0 μg/m3 (19) 13.4 μg/m3 (53) 53.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 13.0 μg/m3 (12) 4.9 μg/m3 (20) 31.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 37.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 38.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 38.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 38.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A 9.0 μg/m3 (8) 5.1 μg/m3 (21) 38.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 9.0 μg/m3 (8) 5.8 μg/m3 (24) 38.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 15.0 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A 37.0 μg/m3 (34) 9.7 μg/m3 (40) 40.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 μg/m3 (28) 11.7 μg/m3 (49) 49.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 24.0 μg/m3 (22) 9.2 μg/m3 (38) 38.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 19.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A 26.0 μg/m3 (24) 19.9 μg/m3 (67) 67.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A 24.0 μg/m3 (22) 17.4 μg/m3 (61) 61.0