AQSQID: 490353013

Site Name: Herriman #3

Location: Herriman (Foothills), UT

Reporting: True, Located: True

Current AQI: 22.0

Herriman (Foothills) UT, US: 40.496408, -112.036305

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Dec. 12, 2019, 7 a.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
Dec. 12, 2019, 6 a.m. 5.0 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
Dec. 12, 2019, 5 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 1.9 μg/m3 (8) 19.0
 
Dec. 12, 2019, 4 a.m. 11.3 ppb (10) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) N/A N/A 1.8 μg/m3 (8) 15.0
 
Dec. 12, 2019, 3 a.m. 11.5 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) N/A N/A 2.1 μg/m3 (9) 15.0
 
Dec. 12, 2019, 2 a.m. 12.0 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A 3.1 μg/m3 (13) 15.0
 
Dec. 12, 2019, 1 a.m. 22.9 ppb (21) 1.3 ppb (1) N/A 22.0 ppb (20) N/A N/A 8.0 ppb (6) N/A N/A 9.5 μg/m3 (40) 40.0
 
Dec. 12, 2019, midnight 23.4 ppb (22) 1.6 ppb (1) N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) N/A N/A 13.8 μg/m3 (54) 54.0
 
Dec. 11, 2019, 11 p.m. 20.2 ppb (19) 2.8 ppb (3) N/A 17.0 ppb (16) N/A N/A 17.0 ppb (13) N/A N/A 15.1 μg/m3 (57) 57.0
 
Dec. 11, 2019, 10 p.m. 25.4 ppb (24) 5.5 ppb (5) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) N/A N/A 19.0 μg/m3 (65) 65.0
 
Dec. 11, 2019, 9 p.m. 4.8 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Dec. 11, 2019, 8 p.m. 7.1 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Dec. 11, 2019, 7 p.m. 27.0 ppb (25) 11.5 ppb (11) N/A 16.0 ppb (15) N/A N/A 19.0 ppb (15) N/A N/A 8.1 μg/m3 (34) 34.0
 
Dec. 11, 2019, 6 p.m. 15.8 ppb (15) 4.8 ppb (4) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) N/A N/A 5.5 μg/m3 (23) 23.0
 
Dec. 11, 2019, 5 p.m. 16.0 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 22.0
 
Dec. 11, 2019, 4 p.m. 20.9 ppb (19) 5.8 ppb (5) N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) N/A N/A 5.6 μg/m3 (23) 23.0
 
Dec. 11, 2019, 3 p.m. 9.0 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 2.8 μg/m3 (12) 20.0
 
Dec. 11, 2019, 2 p.m. 6.3 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.2 μg/m3 (9) 23.0
 
Dec. 11, 2019, 1 p.m. 2.9 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
Dec. 11, 2019, noon 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Dec. 11, 2019, 11 a.m. 7.5 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
Dec. 11, 2019, 10 a.m. 7.9 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 4.9 μg/m3 (20) 20.0
 
Dec. 11, 2019, 9 a.m. 7.6 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A 5.4 μg/m3 (23) 23.0
 
Dec. 11, 2019, 8 a.m. 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 3.5 μg/m3 (15) 24.0
 
Dec. 11, 2019, 7 a.m. 4.1 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 2.5 μg/m3 (10) 24.0
 
Dec. 11, 2019, 6 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
Dec. 11, 2019, 5 a.m. 4.2 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
Dec. 11, 2019, 4 a.m. 7.2 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 2.4 μg/m3 (10) 20.0
 
Dec. 11, 2019, 3 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A N/A 2.6 μg/m3 (11) 17.0
 
Dec. 11, 2019, 2 a.m. 15.4 ppb (14) 2.4 ppb (2) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) N/A N/A 3.8 μg/m3 (16) 16.0
 
Dec. 11, 2019, 1 a.m. 9.1 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 16.0
 
Dec. 11, 2019, midnight 7.9 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Dec. 10, 2019, 11 p.m. 6.7 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Dec. 10, 2019, 10 p.m. 2.8 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
Dec. 10, 2019, 9 p.m. 2.3 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.9 μg/m3 (12) 28.0
 
Dec. 10, 2019, 8 p.m. 2.8 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
Dec. 10, 2019, 7 p.m. 3.9 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 5.4 μg/m3 (23) 27.0
 
Dec. 10, 2019, 6 p.m. 6.3 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 7.6 μg/m3 (32) 32.0
 
Dec. 10, 2019, 5 p.m. 7.5 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A N/A 8.4 μg/m3 (35) 35.0
 
Dec. 10, 2019, 4 p.m. 11.1 ppb (10) 3.9 ppb (4) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 6.8 μg/m3 (28) 28.0
 
Dec. 10, 2019, 3 p.m. 49.6 ppb (46) 26.5 ppb (25) N/A 23.0 ppb (21) N/A N/A 10.0 ppb (8) N/A N/A 9.5 μg/m3 (40) 46.0
 
Dec. 10, 2019, 2 p.m. 23.1 ppb (21) 2.3 ppb (2) N/A 21.0 ppb (19) N/A N/A 8.0 ppb (6) N/A N/A 6.3 μg/m3 (26) 26.0
 
Dec. 10, 2019, 1 p.m. 12.5 ppb (12) 0.8 ppb (1) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) N/A N/A 6.4 μg/m3 (27) 27.0
 
Dec. 10, 2019, noon 9.4 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A 21.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Dec. 10, 2019, 11 a.m. 8.5 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A N/A 5.1 μg/m3 (21) 21.0
 
Dec. 10, 2019, 10 a.m. 11.0 ppb (10) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A 4.1 μg/m3 (17) 17.0
 
Dec. 10, 2019, 9 a.m. 6.6 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A 3.9 μg/m3 (16) 16.0
 
Dec. 10, 2019, 8 a.m. 7.1 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
Dec. 10, 2019, 7 a.m. 6.8 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Dec. 10, 2019, 6 a.m. 4.0 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) N/A N/A 2.4 μg/m3 (10) 19.0
 
Dec. 10, 2019, 5 a.m. 5.4 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A N/A 5.1 μg/m3 (21) 21.0
 
Dec. 10, 2019, 4 a.m. 4.2 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A N/A 4.4 μg/m3 (18) 21.0
 
Dec. 10, 2019, 3 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 4.8 μg/m3 (20) 20.0
 
Dec. 10, 2019, 2 a.m. 7.8 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 4.6 μg/m3 (19) 19.0
 
Dec. 10, 2019, 1 a.m. 8.4 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) N/A N/A 4.1 μg/m3 (17) 17.0
 
Dec. 10, 2019, midnight 7.5 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 4.4 μg/m3 (18) 21.0
 
Dec. 9, 2019, 11 p.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) N/A N/A 3.4 μg/m3 (14) 38.0
 
Dec. 9, 2019, 10 p.m. 3.5 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Dec. 9, 2019, 9 p.m. 3.3 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 6.5 μg/m3 (27) 28.0
 
Dec. 9, 2019, 8 p.m. 3.9 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 7.3 μg/m3 (30) 30.0
 
Dec. 9, 2019, 7 p.m. 6.3 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 6.8 μg/m3 (28) 28.0
 
Dec. 9, 2019, 6 p.m. 17.1 ppb (16) 6.7 ppb (6) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A N/A 7.7 μg/m3 (32) 32.0
 
Dec. 9, 2019, 5 p.m. 22.1 ppb (20) 7.9 ppb (7) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) N/A N/A 9.8 μg/m3 (41) 41.0
 
Dec. 9, 2019, 4 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
Dec. 9, 2019, 3 p.m. 8.7 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Dec. 9, 2019, 2 p.m. 7.1 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
Dec. 9, 2019, 1 p.m. 2.9 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 2.1 μg/m3 (9) 30.0
 
Dec. 9, 2019, noon 5.3 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
Dec. 9, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.6 μg/m3 (23) 25.0
 
Dec. 9, 2019, 10 a.m. 9.9 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) N/A N/A 5.8 μg/m3 (24) 26.0
 
Dec. 9, 2019, 9 a.m. 4.2 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
Dec. 9, 2019, 8 a.m. 5.0 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
Dec. 9, 2019, 7 a.m. 6.1 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
Dec. 9, 2019, 6 a.m. 7.7 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
Dec. 9, 2019, 5 a.m. 7.7 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 5.3 μg/m3 (22) 22.0
 
Dec. 9, 2019, 4 a.m. 7.3 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 3.2 μg/m3 (13) 22.0
 
Dec. 9, 2019, 3 a.m. 8.5 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Dec. 9, 2019, 2 a.m. 6.7 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 2.5 μg/m3 (10) 19.0
 
Dec. 9, 2019, 1 a.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 3.2 μg/m3 (13) 22.0
 
Dec. 9, 2019, midnight 6.3 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
Dec. 8, 2019, 11 p.m. 9.8 ppb (9) 1.4 ppb (1) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Dec. 8, 2019, 10 p.m. 13.9 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Dec. 8, 2019, 9 p.m. 13.3 ppb (12) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
Dec. 8, 2019, 8 p.m. 12.9 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
Dec. 8, 2019, 7 p.m. 8.9 ppb (8) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
Dec. 8, 2019, 6 p.m. 3.7 ppb (3) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 0.6 μg/m3 (2) 31.0
 
Dec. 8, 2019, 5 p.m. 5.3 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
Dec. 8, 2019, 4 p.m. 6.7 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 0.1 μg/m3 (0) 22.0
 
Dec. 8, 2019, 3 p.m. 6.5 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) N/A N/A 1.4 μg/m3 (6) 16.0
 
Dec. 8, 2019, 2 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) N/A N/A 8.4 μg/m3 (35) 35.0
 
Dec. 8, 2019, 1 p.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
Dec. 8, 2019, noon 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
Dec. 8, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
Dec. 8, 2019, 10 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A 0.8 μg/m3 (3) 24.0
 
Dec. 8, 2019, 9 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
Dec. 8, 2019, 8 a.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
Dec. 8, 2019, 7 a.m. 3.8 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) N/A N/A 0.7 μg/m3 (3) 22.0
 
Dec. 8, 2019, 6 a.m. 5.5 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 0.7 μg/m3 (3) 22.0
 
Dec. 8, 2019, 5 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 0.6 μg/m3 (2) 22.0
 
Dec. 8, 2019, 4 a.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A N/A 0.8 μg/m3 (3) 23.0
 
Dec. 8, 2019, 3 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Dec. 8, 2019, 2 a.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A 0.7 μg/m3 (3) 24.0
 
Dec. 8, 2019, 1 a.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
Dec. 8, 2019, midnight 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
Dec. 7, 2019, 11 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
Dec. 7, 2019, 10 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
Dec. 7, 2019, 9 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
Dec. 7, 2019, 8 p.m. 2.6 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 1.3 μg/m3 (5) 26.0
 
Dec. 7, 2019, 7 p.m. 3.7 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 1.6 μg/m3 (7) 25.0
 
Dec. 7, 2019, 6 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
Dec. 7, 2019, 5 p.m. 0.9 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 0.8 μg/m3 (3) 28.0
 
Dec. 7, 2019, 4 p.m. 1.1 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 0.7 μg/m3 (3) 28.0
 
Dec. 7, 2019, 3 p.m. 2.9 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
Dec. 7, 2019, 2 p.m. 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 1.5 μg/m3 (6) 23.0
 
Dec. 7, 2019, 1 p.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 0.6 μg/m3 (2) 27.0
 
Dec. 7, 2019, noon 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 0.6 μg/m3 (2) 27.0
 
Dec. 7, 2019, 11 a.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
Dec. 7, 2019, 10 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 0.8 μg/m3 (3) 25.0
 
Dec. 7, 2019, 9 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
Dec. 7, 2019, 8 a.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
Dec. 7, 2019, 7 a.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
Dec. 7, 2019, 6 a.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
Dec. 7, 2019, 5 a.m. 3.2 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
Dec. 7, 2019, 4 a.m. 3.9 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 1.9 μg/m3 (8) 23.0
 
Dec. 7, 2019, 3 a.m. 5.0 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 1.7 μg/m3 (7) 23.0
 
Dec. 7, 2019, 2 a.m. 34.5 ppb (32) 11.4 ppb (11) N/A 23.0 ppb (21) N/A N/A 15.0 ppb (12) N/A N/A 11.5 μg/m3 (48) 48.0
 
Dec. 7, 2019, 1 a.m. 57.6 ppb (54) 19.1 ppb (18) N/A 38.0 ppb (35) N/A N/A 1.0 ppb (1) N/A N/A 19.4 μg/m3 (66) 66.0
 
Dec. 7, 2019, midnight 18.7 ppb (17) 4.0 ppb (4) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 6.9 μg/m3 (29) 29.0
 
Dec. 6, 2019, 11 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
Dec. 6, 2019, 10 p.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Dec. 6, 2019, 9 p.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 3.4 μg/m3 (14) 25.0
 
Dec. 6, 2019, 8 p.m. 6.4 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
Dec. 6, 2019, 7 p.m. 8.7 ppb (8) 3.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 4.6 μg/m3 (19) 23.0
 
Dec. 6, 2019, 6 p.m. 19.5 ppb (18) 9.3 ppb (9) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 8.5 μg/m3 (35) 35.0
 
Dec. 6, 2019, 5 p.m. 17.1 ppb (16) 7.8 ppb (7) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A 8.4 μg/m3 (35) 35.0
 
Dec. 6, 2019, 4 p.m. 13.3 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) N/A N/A 3.7 μg/m3 (15) 15.0
 
Dec. 6, 2019, 3 p.m. 27.8 ppb (26) 9.4 ppb (9) N/A 18.0 ppb (17) N/A N/A 8.0 ppb (6) N/A N/A 3.9 μg/m3 (16) 26.0
 
Dec. 6, 2019, 2 p.m. 50.6 ppb (47) 22.8 ppb (21) N/A 28.0 ppb (26) N/A N/A 0.0 ppb (0) N/A N/A 13.2 μg/m3 (53) 53.0
 
Dec. 6, 2019, 1 p.m. 60.4 ppb (57) 30.6 ppb (28) N/A 30.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A 13.4 μg/m3 (53) 57.0
 
Dec. 6, 2019, noon 53.2 ppb (49) 24.1 ppb (22) N/A 29.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A 14.4 μg/m3 (55) 55.0
 
Dec. 6, 2019, 11 a.m. 53.3 ppb (49) 23.2 ppb (21) N/A 30.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A 12.3 μg/m3 (51) 51.0
 
Dec. 6, 2019, 10 a.m. 51.6 ppb (48) 22.9 ppb (21) N/A 28.0 ppb (26) N/A N/A 0.0 ppb (0) N/A N/A 18.3 μg/m3 (63) 63.0
 
Dec. 6, 2019, 9 a.m. 40.2 ppb (37) 13.2 ppb (12) N/A 27.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A 15.6 μg/m3 (58) 58.0
 
Dec. 6, 2019, 8 a.m. 11.1 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) N/A N/A 5.7 μg/m3 (24) 24.0
 
Dec. 6, 2019, 7 a.m. 52.3 ppb (48) 22.1 ppb (20) N/A 30.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A 21.6 μg/m3 (70) 70.0
 
Dec. 6, 2019, 6 a.m. 57.4 ppb (54) 26.7 ppb (25) N/A 31.0 ppb (29) N/A N/A 0.0 ppb (0) N/A N/A 28.1 μg/m3 (84) 84.0
 
Dec. 6, 2019, 5 a.m. 55.0 ppb (51) 23.3 ppb (22) N/A 32.0 ppb (30) N/A N/A 0.0 ppb (0) N/A N/A 27.7 μg/m3 (83) 83.0
 
Dec. 6, 2019, 4 a.m. 56.3 ppb (52) 22.7 ppb (21) N/A 33.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A 31.6 μg/m3 (92) 92.0
 
Dec. 6, 2019, 3 a.m. 57.4 ppb (54) 23.3 ppb (22) N/A 34.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A 28.4 μg/m3 (85) 85.0
 
Dec. 6, 2019, 2 a.m. 56.7 ppb (53) 22.1 ppb (20) N/A 34.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A 27.8 μg/m3 (84) 84.0
 
Dec. 6, 2019, 1 a.m. 55.1 ppb (51) 20.7 ppb (19) N/A 34.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A 29.3 μg/m3 (87) 87.0
 
Dec. 6, 2019, midnight 20.8 ppb (19) 3.4 ppb (3) N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) N/A N/A 13.8 μg/m3 (54) 54.0
 
Dec. 5, 2019, 11 p.m. 9.4 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) N/A N/A 8.5 μg/m3 (35) 35.0
 
Dec. 5, 2019, 10 p.m. 13.3 ppb (12) 1.8 ppb (2) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) N/A N/A 13.6 μg/m3 (53) 53.0
 
Dec. 5, 2019, 9 p.m. 19.3 ppb (18) 3.4 ppb (3) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) N/A N/A 18.9 μg/m3 (65) 65.0
 
Dec. 5, 2019, 8 p.m. 38.0 ppb (35) 11.2 ppb (10) N/A 27.0 ppb (25) N/A N/A 12.0 ppb (9) N/A N/A 23.5 μg/m3 (74) 74.0
 
Dec. 5, 2019, 7 p.m. 46.7 ppb (43) 16.8 ppb (16) N/A 30.0 ppb (28) N/A N/A 9.0 ppb (7) N/A N/A 29.7 μg/m3 (88) 88.0
 
Dec. 5, 2019, 6 p.m. 45.5 ppb (42) 18.6 ppb (17) N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) N/A N/A 31.7 μg/m3 (92) 92.0
 
Dec. 5, 2019, 5 p.m. 51.7 ppb (48) 20.6 ppb (19) N/A 31.0 ppb (29) N/A N/A 7.0 ppb (5) N/A N/A 27.8 μg/m3 (84) 84.0
 
Dec. 5, 2019, 4 p.m. 54.0 ppb (50) 19.4 ppb (18) N/A 34.0 ppb (31) N/A N/A 3.0 ppb (2) N/A N/A 27.9 μg/m3 (84) 84.0
 
Dec. 5, 2019, 3 p.m. 50.5 ppb (47) 15.1 ppb (14) N/A 35.0 ppb (32) N/A N/A 3.0 ppb (2) N/A N/A 25.8 μg/m3 (79) 79.0
 
Dec. 5, 2019, 2 p.m. 48.1 ppb (45) 9.3 ppb (9) N/A 39.0 ppb (36) N/A N/A 0.0 ppb (0) N/A N/A 18.7 μg/m3 (64) 64.0
 
Dec. 5, 2019, 1 p.m. 49.3 ppb (46) 9.8 ppb (9) N/A 39.0 ppb (36) N/A N/A 0.0 ppb (0) N/A N/A 22.9 μg/m3 (73) 73.0
 
Dec. 5, 2019, noon 43.2 ppb (40) 6.0 ppb (6) N/A 37.0 ppb (34) N/A N/A 0.0 ppb (0) N/A N/A 19.8 μg/m3 (67) 67.0
 
Dec. 5, 2019, 11 a.m. 20.9 ppb (19) 1.7 ppb (2) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) N/A N/A 12.7 μg/m3 (51) 51.0
 
Dec. 5, 2019, 10 a.m. 11.1 ppb (10) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 6.9 μg/m3 (29) 29.0
 
Dec. 5, 2019, 9 a.m. 10.5 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
Dec. 5, 2019, 8 a.m. 24.2 ppb (22) 0.8 ppb (1) N/A 23.0 ppb (21) N/A N/A 17.0 ppb (13) N/A N/A 21.3 μg/m3 (70) 70.0