AQSQID: 490353010

Site Name: Rose Park

Location: Salt Lake City (Dupont Ave), UT

Reporting: True, Located: True

Current AQI: 42.0

Salt Lake City (Dupont Ave) UT, US: 40.7955, -111.9309

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 55.0 ppb (42) 0.0 ppb (0) N/A 4.1 μg/m3 (17) 42.0
 
March 20, 2019, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 55.0 ppb (42) 0.0 ppb (0) N/A 4.8 μg/m3 (20) 42.0
 
March 20, 2019, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 54.0 ppb (42) 0.0 ppb (0) N/A 4.4 μg/m3 (18) 42.0
 
March 20, 2019, midnight 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 4.8 μg/m3 (20) 41.0
 
March 19, 2019, 11 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 4.7 μg/m3 (20) 42.0
 
March 19, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
March 19, 2019, 9 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 7.5 μg/m3 (31) 40.0
 
March 19, 2019, 8 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A N/A 38.0
 
March 19, 2019, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.6 μg/m3 (23) 37.0
 
March 19, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
March 19, 2019, 5 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 5.9 μg/m3 (25) 30.0
 
March 19, 2019, 4 p.m. 35.0 ppb (32) 14.0 ppb (13) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 28.0 ppb (22) 0.0 ppb (0) N/A 7.6 μg/m3 (32) 32.0
 
March 19, 2019, 3 p.m. 52.0 ppb (48) 24.0 ppb (22) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) N/A 7.7 μg/m3 (32) 48.0
 
March 19, 2019, 2 p.m. 136.0 ppb (107) 95.0 ppb (94) N/A 41.0 ppb (38) N/A 1.0 ppb (1) 4.0 ppb (3) 0.9 ppb (10) N/A 10.6 μg/m3 (44) 107.0
 
March 19, 2019, 1 p.m. 146.0 ppb (109) 107.0 ppb (101) N/A 40.0 ppb (37) N/A 1.0 ppb (1) 2.0 ppb (2) 1.1 ppb (12) N/A 9.7 μg/m3 (40) 109.0
 
March 19, 2019, noon 110.0 ppb (102) 73.0 ppb (70) N/A 37.0 ppb (34) N/A 1.0 ppb (1) 2.0 ppb (2) 0.7 ppb (8) N/A 7.2 μg/m3 (30) 102.0
 
March 19, 2019, 11 a.m. 76.0 ppb (73) 40.0 ppb (37) N/A 36.0 ppb (33) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 5.7 μg/m3 (24) 73.0
 
March 19, 2019, 10 a.m. 53.0 ppb (49) 17.0 ppb (16) N/A 36.0 ppb (33) N/A 0.0 ppb (0) 2.0 ppb (2) 0.1 ppb (1) N/A 4.7 μg/m3 (20) 49.0
 
March 19, 2019, 9 a.m. 43.0 ppb (40) 8.0 ppb (7) N/A 35.0 ppb (32) N/A 0.0 ppb (0) 2.0 ppb (2) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 40.0
 
March 19, 2019, 8 a.m. 37.0 ppb (34) 5.0 ppb (5) N/A 32.0 ppb (30) N/A 0.0 ppb (0) 4.0 ppb (3) 0.0 ppb (0) N/A 4.1 μg/m3 (17) 34.0
 
March 19, 2019, 7 a.m. 33.0 ppb (31) 4.0 ppb (4) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 10.0 ppb (8) 0.0 ppb (0) N/A 4.1 μg/m3 (17) 31.0
 
March 19, 2019, 6 a.m. 48.0 ppb (44) 12.0 ppb (11) N/A 36.0 ppb (33) N/A 0.0 ppb (0) 3.0 ppb (2) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 44.0
 
March 19, 2019, 5 a.m. 43.0 ppb (40) 8.0 ppb (7) N/A 34.0 ppb (31) N/A 0.0 ppb (0) 3.0 ppb (2) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 40.0
 
March 19, 2019, 4 a.m. 25.0 ppb (23) 1.0 ppb (1) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 13.0 ppb (10) 0.0 ppb (0) N/A 2.9 μg/m3 (12) 23.0
 
March 19, 2019, 3 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.7 μg/m3 (11) 18.0
 
March 19, 2019, 2 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 2.5 μg/m3 (10) 27.0
 
March 19, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.9 μg/m3 (12) 30.0
 
March 19, 2019, midnight 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
March 18, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
March 18, 2019, 10 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 4.8 μg/m3 (20) 41.0
 
March 18, 2019, 9 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 7.4 μg/m3 (31) 38.0
 
March 18, 2019, 8 p.m. 15.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 8.6 μg/m3 (36) 36.0
 
March 18, 2019, 7 p.m. 22.0 ppb (20) 6.0 ppb (6) N/A 16.0 ppb (15) N/A N/A 42.0 ppb (32) 0.0 ppb (0) N/A 8.6 μg/m3 (36) 36.0
 
March 18, 2019, 6 p.m. 28.0 ppb (26) 9.0 ppb (8) N/A 19.0 ppb (18) N/A N/A 37.0 ppb (28) 0.0 ppb (0) N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 5 p.m. 25.0 ppb (23) 8.0 ppb (7) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 36.0 ppb (28) 0.0 ppb (0) N/A 6.4 μg/m3 (27) 28.0
 
March 18, 2019, 4 p.m. 46.0 ppb (43) 19.0 ppb (18) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) N/A 6.0 μg/m3 (25) 43.0
 
March 18, 2019, 3 p.m. 48.0 ppb (44) 19.0 ppb (18) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 17.0 ppb (13) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 44.0
 
March 18, 2019, 2 p.m. 106.0 ppb (101) 67.0 ppb (64) N/A 38.0 ppb (35) N/A 1.0 ppb (1) 7.0 ppb (5) 0.8 ppb (9) N/A 6.0 μg/m3 (25) 101.0
 
March 18, 2019, 1 p.m. 132.0 ppb (106) 91.0 ppb (89) N/A 42.0 ppb (39) N/A 1.0 ppb (1) 2.0 ppb (2) 0.9 ppb (10) N/A 5.7 μg/m3 (24) 106.0
 
March 18, 2019, noon 90.0 ppb (88) 50.0 ppb (46) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 2.0 ppb (2) 0.6 ppb (7) N/A 5.5 μg/m3 (23) 88.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.6 ppb (7) N/A 4.7 μg/m3 (20) 20.0
 
March 18, 2019, 10 a.m. 87.0 ppb (85) 45.0 ppb (42) N/A 42.0 ppb (39) N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (4) N/A 5.2 μg/m3 (22) 85.0
 
March 18, 2019, 9 a.m. 67.0 ppb (64) 27.0 ppb (25) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (4) N/A 4.9 μg/m3 (20) 64.0
 
March 18, 2019, 8 a.m. 57.0 ppb (53) 19.0 ppb (18) N/A 38.0 ppb (35) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 10.7 μg/m3 (45) 53.0
 
March 18, 2019, 7 a.m. 47.0 ppb (44) 7.0 ppb (6) N/A 40.0 ppb (37) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 4.0 μg/m3 (17) 44.0
 
March 18, 2019, 6 a.m. 44.0 ppb (41) 4.0 ppb (4) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 4.0 ppb (3) 0.3 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 5 a.m. 39.0 ppb (36) 4.0 ppb (4) N/A 35.0 ppb (32) N/A 0.0 ppb (0) 8.0 ppb (6) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 36.0
 
March 18, 2019, 4 a.m. 41.0 ppb (38) 3.0 ppb (3) N/A 37.0 ppb (34) N/A 0.0 ppb (0) 10.0 ppb (8) 0.3 ppb (3) N/A N/A 38.0
 
March 18, 2019, 3 a.m. 21.0 ppb (19) 0.0 ppb (0) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 25.0 ppb (19) 0.0 ppb (0) N/A 6.4 μg/m3 (27) 27.0
 
March 18, 2019, 2 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.9 μg/m3 (20) 29.0
 
March 18, 2019, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
March 18, 2019, midnight 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
March 17, 2019, 11 p.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 9.1 μg/m3 (38) 40.0
 
March 17, 2019, 10 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 13.4 μg/m3 (53) 53.0
 
March 17, 2019, 9 p.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 15.9 μg/m3 (58) 58.0
 
March 17, 2019, 8 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 17.9 μg/m3 (63) 63.0
 
March 17, 2019, 7 p.m. 16.0 ppb (15) 4.0 ppb (4) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 49.0 ppb (38) 0.0 ppb (0) N/A 19.0 μg/m3 (65) 65.0
 
March 17, 2019, 6 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 43.0 ppb (33) 0.0 ppb (0) N/A 17.6 μg/m3 (62) 62.0
 
March 17, 2019, 5 p.m. 23.0 ppb (21) 7.0 ppb (6) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 36.0 ppb (28) 0.0 ppb (0) N/A 16.0 μg/m3 (59) 59.0
 
March 17, 2019, 4 p.m. 27.0 ppb (25) 9.0 ppb (8) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 30.0 ppb (23) 0.0 ppb (0) N/A 15.1 μg/m3 (57) 57.0
 
March 17, 2019, 3 p.m. 28.0 ppb (26) 9.0 ppb (8) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 26.0 ppb (20) 0.0 ppb (0) N/A 14.7 μg/m3 (56) 56.0
 
March 17, 2019, 2 p.m. 41.0 ppb (38) 12.0 ppb (11) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 16.0 ppb (12) 0.1 ppb (1) N/A 11.2 μg/m3 (47) 47.0
 
March 17, 2019, 1 p.m. 77.0 ppb (74) 35.0 ppb (32) N/A 42.0 ppb (39) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 11.5 μg/m3 (48) 74.0
 
March 17, 2019, noon 46.0 ppb (43) 8.0 ppb (7) N/A 38.0 ppb (35) N/A 0.0 ppb (0) 4.0 ppb (3) 0.2 ppb (2) N/A 12.4 μg/m3 (51) 51.0
 
March 17, 2019, 11 a.m. 51.0 ppb (47) 11.0 ppb (10) N/A 39.0 ppb (36) N/A 0.0 ppb (0) N/A 0.2 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
March 17, 2019, 10 a.m. 68.0 ppb (65) 28.0 ppb (26) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 2.0 ppb (2) 0.5 ppb (6) N/A 13.0 μg/m3 (52) 65.0
 
March 17, 2019, 9 a.m. 47.0 ppb (44) 8.0 ppb (7) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 12.5 μg/m3 (51) 51.0
 
March 17, 2019, 8 a.m. 53.0 ppb (49) 14.0 ppb (13) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 3.0 ppb (2) 0.4 ppb (4) N/A 14.4 μg/m3 (55) 55.0
 
March 17, 2019, 7 a.m. 59.0 ppb (55) 18.0 ppb (17) N/A 40.0 ppb (37) N/A 0.0 ppb (0) 2.0 ppb (2) 0.5 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 17, 2019, 6 a.m. 52.0 ppb (48) 10.0 ppb (9) N/A 41.0 ppb (38) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
March 17, 2019, 5 a.m. 41.0 ppb (38) 4.0 ppb (4) N/A 37.0 ppb (34) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) N/A 18.2 μg/m3 (63) 63.0
 
March 17, 2019, 4 a.m. 26.0 ppb (24) 0.0 ppb (0) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) N/A 13.1 μg/m3 (52) 52.0
 
March 17, 2019, 3 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 34.0 ppb (26) 0.0 ppb (0) N/A 12.8 μg/m3 (52) 52.0
 
March 17, 2019, 2 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 10.6 μg/m3 (44) 44.0
 
March 17, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 10.2 μg/m3 (42) 42.0
 
March 17, 2019, midnight 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 9.4 μg/m3 (39) 39.0
 
March 16, 2019, 11 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 16, 2019, 10 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 16, 2019, 9 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (40) 0.0 ppb (0) N/A 11.0 μg/m3 (46) 46.0
 
March 16, 2019, 8 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) N/A 12.3 μg/m3 (51) 51.0
 
March 16, 2019, 7 p.m. 15.0 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 13.4 μg/m3 (53) 53.0
 
March 16, 2019, 6 p.m. 20.0 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 40.0 ppb (31) 0.0 ppb (0) N/A 13.0 μg/m3 (52) 52.0
 
March 16, 2019, 5 p.m. 19.0 ppb (18) 6.0 ppb (6) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 37.0 ppb (28) 0.0 ppb (0) N/A 12.2 μg/m3 (50) 50.0
 
March 16, 2019, 4 p.m. 22.0 ppb (20) 7.0 ppb (6) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 35.0 ppb (27) 0.0 ppb (0) N/A 10.0 μg/m3 (42) 42.0
 
March 16, 2019, 3 p.m. 33.0 ppb (31) 11.0 ppb (10) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 7.4 μg/m3 (31) 31.0
 
March 16, 2019, 2 p.m. 76.0 ppb (73) 38.0 ppb (35) N/A 37.0 ppb (34) N/A 0.0 ppb (0) 7.0 ppb (5) 0.5 ppb (6) N/A 8.6 μg/m3 (36) 73.0
 
March 16, 2019, 1 p.m. 72.0 ppb (69) 34.0 ppb (31) N/A 38.0 ppb (35) N/A 0.0 ppb (0) 2.0 ppb (2) 0.5 ppb (6) N/A 8.4 μg/m3 (35) 69.0
 
March 16, 2019, noon 61.0 ppb (57) 19.0 ppb (18) N/A 41.0 ppb (38) N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (4) N/A 6.3 μg/m3 (26) 57.0
 
March 16, 2019, 11 a.m. 61.0 ppb (57) 20.0 ppb (19) N/A 40.0 ppb (37) N/A N/A 2.0 ppb (2) 0.5 ppb (6) N/A 5.8 μg/m3 (24) 57.0
 
March 16, 2019, 10 a.m. 51.0 ppb (47) 11.0 ppb (10) N/A 39.0 ppb (36) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 5.7 μg/m3 (24) 47.0
 
March 16, 2019, 9 a.m. 40.0 ppb (37) 5.0 ppb (5) N/A 35.0 ppb (32) N/A 0.0 ppb (0) 5.0 ppb (4) 0.2 ppb (2) N/A 7.2 μg/m3 (30) 37.0
 
March 16, 2019, 8 a.m. 43.0 ppb (40) 6.0 ppb (6) N/A 37.0 ppb (34) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 5.8 μg/m3 (24) 40.0
 
March 16, 2019, 7 a.m. 50.0 ppb (46) 10.0 ppb (9) N/A 40.0 ppb (37) N/A 0.0 ppb (0) 3.0 ppb (2) 0.5 ppb (6) N/A 7.6 μg/m3 (32) 46.0
 
March 16, 2019, 6 a.m. 24.0 ppb (22) 2.0 ppb (2) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) N/A 6.8 μg/m3 (28) 28.0
 
March 16, 2019, 5 a.m. 21.0 ppb (19) 0.0 ppb (0) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 22.0 ppb (17) 0.0 ppb (0) N/A 7.7 μg/m3 (32) 32.0
 
March 16, 2019, 4 a.m. 20.0 ppb (19) 1.0 ppb (1) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 17.0 ppb (13) 0.0 ppb (0) N/A 15.3 μg/m3 (57) 57.0
 
March 16, 2019, 3 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 28.0 ppb (22) 0.0 ppb (0) N/A 16.1 μg/m3 (59) 59.0
 
March 16, 2019, 2 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) 0.0 ppb (0) N/A 12.0 μg/m3 (50) 50.0
 
March 16, 2019, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.0 ppb (0) N/A 8.7 μg/m3 (36) 36.0
 
March 16, 2019, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
March 15, 2019, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 7.1 μg/m3 (30) 35.0
 
March 15, 2019, 10 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 7.2 μg/m3 (30) 35.0
 
March 15, 2019, 9 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 6.1 μg/m3 (25) 35.0
 
March 15, 2019, 8 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 43.0 ppb (33) 0.0 ppb (0) N/A 6.6 μg/m3 (28) 33.0
 
March 15, 2019, 7 p.m. 16.0 ppb (15) 6.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 40.0 ppb (31) 0.0 ppb (0) N/A 7.8 μg/m3 (32) 32.0
 
March 15, 2019, 6 p.m. 18.0 ppb (17) 6.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 38.0 ppb (29) 0.0 ppb (0) N/A 9.2 μg/m3 (38) 38.0
 
March 15, 2019, 5 p.m. 17.0 ppb (16) 6.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 37.0 ppb (28) 0.0 ppb (0) N/A 7.1 μg/m3 (30) 30.0
 
March 15, 2019, 4 p.m. 38.0 ppb (35) 17.0 ppb (16) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 6.6 μg/m3 (28) 35.0
 
March 15, 2019, 3 p.m. 53.0 ppb (49) 24.0 ppb (22) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 19.0 ppb (15) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 49.0
 
March 15, 2019, 2 p.m. 78.0 ppb (76) 38.0 ppb (35) N/A 40.0 ppb (37) N/A 0.0 ppb (0) 7.0 ppb (5) 0.5 ppb (6) N/A 6.2 μg/m3 (26) 76.0
 
March 15, 2019, 1 p.m. 67.0 ppb (64) 25.0 ppb (23) N/A 41.0 ppb (38) N/A 0.0 ppb (0) 4.0 ppb (3) 0.4 ppb (4) N/A 4.9 μg/m3 (20) 64.0
 
March 15, 2019, noon 31.0 ppb (29) 3.0 ppb (3) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 15.0 ppb (12) 0.1 ppb (1) N/A 2.8 μg/m3 (12) 29.0
 
March 15, 2019, 11 a.m. 32.0 ppb (30) 2.0 ppb (2) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 14.0 ppb (11) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 30.0
 
March 15, 2019, 10 a.m. 34.0 ppb (31) 2.0 ppb (2) N/A 31.0 ppb (29) N/A 0.0 ppb (0) 11.0 ppb (8) 0.0 ppb (0) N/A 5.8 μg/m3 (24) 31.0
 
March 15, 2019, 9 a.m. 29.0 ppb (27) 2.0 ppb (2) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 15.0 ppb (12) 0.1 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
March 15, 2019, 8 a.m. 30.0 ppb (28) 2.0 ppb (2) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 10.0 ppb (8) 0.1 ppb (1) N/A 7.5 μg/m3 (31) 31.0
 
March 15, 2019, 7 a.m. 27.0 ppb (25) 1.0 ppb (1) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 10.0 ppb (8) 0.0 ppb (0) N/A 13.2 μg/m3 (53) 53.0
 
March 15, 2019, 6 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 18.0 ppb (14) 0.0 ppb (0) N/A 5.8 μg/m3 (24) 24.0
 
March 15, 2019, 5 a.m. 29.0 ppb (27) 2.0 ppb (2) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 13.0 ppb (10) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 27.0
 
March 15, 2019, 4 a.m. 31.0 ppb (29) 2.0 ppb (2) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 9.0 ppb (7) 0.0 ppb (0) N/A 3.9 μg/m3 (16) 29.0
 
March 15, 2019, 3 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 29.0 ppb (22) 0.0 ppb (0) N/A 2.5 μg/m3 (10) 22.0
 
March 15, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.0 ppb (0) N/A 2.7 μg/m3 (11) 29.0
 
March 15, 2019, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) 0.0 ppb (0) N/A 1.5 μg/m3 (6) 32.0
 
March 15, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 34.0
 
March 14, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 35.0
 
March 14, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 3.3 μg/m3 (14) 36.0
 
March 14, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 36.0
 
March 14, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 35.0
 
March 14, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.0 ppb (0) N/A 4.0 μg/m3 (17) 34.0
 
March 14, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.0 ppb (0) N/A 4.0 μg/m3 (17) 32.0
 
March 14, 2019, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 30.0
 
March 14, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.0 ppb (0) N/A 2.4 μg/m3 (10) 27.0
 
March 14, 2019, 3 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.0 ppb (0) N/A 1.3 μg/m3 (5) 22.0
 
March 14, 2019, 2 p.m. 19.0 ppb (18) 4.0 ppb (4) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 19.0 ppb (15) 0.0 ppb (0) N/A 1.7 μg/m3 (7) 18.0
 
March 14, 2019, 1 p.m. 22.0 ppb (20) 2.0 ppb (2) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) 0.1 ppb (1) N/A 2.1 μg/m3 (9) 20.0
 
March 14, 2019, noon 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.0 ppb (0) N/A 1.3 μg/m3 (5) 22.0
 
March 14, 2019, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
March 14, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
March 14, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
March 14, 2019, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.3 μg/m3 (5) 30.0
 
March 14, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.4 μg/m3 (6) 31.0
 
March 14, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
March 14, 2019, 5 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
March 14, 2019, 4 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
March 14, 2019, 3 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.0 ppb (0) N/A 2.3 μg/m3 (10) 28.0
 
March 14, 2019, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.3 μg/m3 (10) 30.0
 
March 14, 2019, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.3 μg/m3 (5) 31.0
 
March 14, 2019, midnight 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 30.0
 
March 13, 2019, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 32.0
 
March 13, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.4 μg/m3 (2) 34.0
 
March 13, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.0 ppb (0) N/A 0.4 μg/m3 (2) 34.0
 
March 13, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 0.3 μg/m3 (1) 35.0
 
March 13, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.4 μg/m3 (2) 34.0
 
March 13, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 0.4 μg/m3 (2) 35.0
 
March 13, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 0.4 μg/m3 (2) 35.0
 
March 13, 2019, 4 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 0.4 μg/m3 (2) 35.0
 
March 13, 2019, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 0.5 μg/m3 (2) 35.0
 
March 13, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 13, 2019, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 13, 2019, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.6 μg/m3 (2) 35.0
 
March 13, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.7 μg/m3 (3) 34.0
 
March 13, 2019, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 0.8 μg/m3 (3) 33.0
 
March 13, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 0.6 μg/m3 (2) 31.0
 
March 13, 2019, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.8 μg/m3 (3) 27.0
 
March 12, 2019, 5 p.m. 41.0 ppb (38) 15.0 ppb (14) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 27.0 ppb (21) 0.0 ppb (0) N/A 18.4 μg/m3 (64) 64.0
 
March 12, 2019, 4 p.m. 38.0 ppb (35) 15.0 ppb (14) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 22.0 ppb (17) 0.0 ppb (0) N/A 22.0 μg/m3 (71) 71.0
 
March 12, 2019, 3 p.m. 41.0 ppb (38) 15.0 ppb (14) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 16.0 ppb (12) 0.0 ppb (0) N/A 22.6 μg/m3 (73) 73.0
 
March 12, 2019, 2 p.m. 108.0 ppb (101) 73.0 ppb (70) N/A 35.0 ppb (32) N/A 1.0 ppb (1) 4.0 ppb (3) 0.8 ppb (9) N/A 19.0 μg/m3 (65) 101.0