AQSQID: 490353013

Site Name: Herriman #3

Location: Herriman (Foothills), UT

Reporting: True, Located: True

Current AQI: 23.0

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
Jan. 19, 2020, 5 p.m. 18.3 ppb (17) 7.6 ppb (7) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
Jan. 19, 2020, 4 p.m. 18.7 ppb (17) 6.1 ppb (6) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
Jan. 19, 2020, 3 p.m. 13.6 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) N/A N/A 1.2 μg/m3 (5) 22.0
 
Jan. 19, 2020, 2 p.m. 12.4 ppb (11) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
Jan. 19, 2020, 1 p.m. 10.3 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 0.9 μg/m3 (4) 22.0
 
Jan. 19, 2020, noon 7.2 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
Jan. 19, 2020, 10 a.m. 9.6 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
Jan. 19, 2020, 9 a.m. 7.6 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
Jan. 19, 2020, 8 a.m. 7.9 ppb (7) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
Jan. 19, 2020, 7 a.m. 9.6 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) N/A N/A 2.2 μg/m3 (9) 20.0
 
Jan. 19, 2020, 6 a.m. 7.5 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 4.6 μg/m3 (19) 23.0
 
Jan. 19, 2020, 5 a.m. 5.9 ppb (5) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
Jan. 19, 2020, 4 a.m. 7.9 ppb (7) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Jan. 19, 2020, 3 a.m. 5.9 ppb (5) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
Jan. 19, 2020, 2 a.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 1.6 μg/m3 (7) 25.0
 
Jan. 19, 2020, 1 a.m. 5.6 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Jan. 19, 2020, midnight 5.8 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.7 μg/m3 (7) 25.0
 
Jan. 18, 2020, 11 p.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
Jan. 18, 2020, 10 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
Jan. 18, 2020, 9 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.5 μg/m3 (2) 32.0
 
Jan. 18, 2020, 8 p.m. 1.5 ppb (1) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 0.7 μg/m3 (3) 32.0
 
Jan. 18, 2020, 7 p.m. 1.7 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
Jan. 18, 2020, 6 p.m. 1.7 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
Jan. 18, 2020, 5 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 0.7 μg/m3 (3) 29.0
 
Jan. 18, 2020, 4 p.m. 7.3 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
Jan. 18, 2020, 3 p.m. 8.2 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 1.2 μg/m3 (5) 24.0
 
Jan. 18, 2020, 2 p.m. 10.1 ppb (9) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 1.1 μg/m3 (5) 20.0
 
Jan. 18, 2020, 1 p.m. 6.5 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
Jan. 18, 2020, noon 3.8 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
Jan. 18, 2020, 11 a.m. 5.5 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
Jan. 18, 2020, 10 a.m. 5.2 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
Jan. 18, 2020, 9 a.m. 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 0.8 μg/m3 (3) 24.0
 
Jan. 18, 2020, 8 a.m. 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 0.7 μg/m3 (3) 27.0
 
Jan. 18, 2020, 7 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
Jan. 18, 2020, 6 a.m. 4.8 ppb (4) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 1.7 μg/m3 (7) 25.0
 
Jan. 18, 2020, 5 a.m. 6.3 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
Jan. 18, 2020, 4 a.m. 7.6 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
Jan. 18, 2020, 3 a.m. 6.8 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
Jan. 18, 2020, 2 a.m. 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Jan. 18, 2020, 1 a.m. 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
Jan. 18, 2020, midnight 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
Jan. 17, 2020, 11 p.m. 2.0 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
Jan. 17, 2020, 10 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, 9 p.m. 1.5 ppb (1) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, 8 p.m. 1.1 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 17, 2020, 7 p.m. 1.1 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, 6 p.m. 1.1 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Jan. 17, 2020, 5 p.m. 1.2 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 17, 2020, 4 p.m. 4.6 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
Jan. 17, 2020, 3 p.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
Jan. 17, 2020, 2 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 0.9 μg/m3 (4) 35.0
 
Jan. 17, 2020, 1 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 0.6 μg/m3 (2) 35.0
 
Jan. 17, 2020, noon 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 7.3 μg/m3 (30) 34.0
 
Jan. 17, 2020, 11 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 10.6 μg/m3 (44) 44.0
 
Jan. 17, 2020, 10 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 5.3 μg/m3 (22) 34.0
 
Jan. 17, 2020, 9 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
Jan. 17, 2020, 8 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 2.3 μg/m3 (10) 32.0
 
Jan. 17, 2020, 7 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
Jan. 17, 2020, 6 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Jan. 17, 2020, 5 a.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
Jan. 17, 2020, 4 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.4 μg/m3 (6) 36.0
 
Jan. 17, 2020, 3 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 1.4 μg/m3 (6) 37.0
 
Jan. 17, 2020, 2 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.5 μg/m3 (6) 36.0
 
Jan. 17, 2020, 1 a.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.5 μg/m3 (6) 36.0
 
Jan. 17, 2020, midnight 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.6 μg/m3 (7) 36.0
 
Jan. 16, 2020, 11 p.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
Jan. 16, 2020, 10 p.m. 1.3 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
Jan. 16, 2020, 9 p.m. 1.1 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
Jan. 16, 2020, 8 p.m. 3.2 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
Jan. 16, 2020, 7 p.m. 4.2 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 2.2 μg/m3 (9) 33.0
 
Jan. 16, 2020, 6 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 2.1 μg/m3 (9) 33.0
 
Jan. 16, 2020, 5 p.m. 4.8 ppb (4) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 1.7 μg/m3 (7) 33.0
 
Jan. 16, 2020, 4 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Jan. 16, 2020, 3 p.m. 1.2 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Jan. 16, 2020, 2 p.m. 1.2 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
Jan. 16, 2020, 1 p.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
Jan. 16, 2020, noon 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
Jan. 16, 2020, 11 a.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
Jan. 16, 2020, 10 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
Jan. 16, 2020, 9 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.5 μg/m3 (6) 35.0
 
Jan. 16, 2020, 8 a.m. 1.8 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
Jan. 16, 2020, 7 a.m. 5.5 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
Jan. 16, 2020, 6 a.m. 4.7 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A N/A 2.4 μg/m3 (10) 29.0
 
Jan. 16, 2020, 5 a.m. 6.2 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
Jan. 16, 2020, 4 a.m. 15.2 ppb (14) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 27.0 ppb (21) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 3 a.m. 28.6 ppb (26) 1.1 ppb (1) N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 16, 2020, 2 a.m. 32.0 ppb (30) 1.7 ppb (2) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) N/A N/A 6.6 μg/m3 (28) 30.0
 
Jan. 16, 2020, 1 a.m. 28.1 ppb (26) 1.4 ppb (1) N/A 27.0 ppb (25) N/A N/A 11.0 ppb (8) N/A N/A 5.6 μg/m3 (23) 26.0
 
Jan. 16, 2020, midnight 19.2 ppb (18) 1.2 ppb (1) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (16) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 15, 2020, 11 p.m. 15.6 ppb (14) 2.6 ppb (2) N/A 13.0 ppb (12) N/A N/A 28.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
Jan. 15, 2020, 10 p.m. 9.7 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 2.8 μg/m3 (12) 27.0
 
Jan. 15, 2020, 9 p.m. 11.3 ppb (10) 4.4 ppb (4) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 3.2 μg/m3 (13) 27.0
 
Jan. 15, 2020, 8 p.m. 9.8 ppb (9) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 2.7 μg/m3 (11) 26.0
 
Jan. 15, 2020, 7 p.m. 12.5 ppb (12) 5.8 ppb (5) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
Jan. 15, 2020, 6 p.m. 14.3 ppb (13) 6.3 ppb (6) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A 2.5 μg/m3 (10) 25.0
 
Jan. 15, 2020, 5 p.m. 21.4 ppb (20) 9.2 ppb (9) N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
Jan. 15, 2020, 4 p.m. 15.1 ppb (14) 5.2 ppb (5) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
Jan. 15, 2020, 3 p.m. 14.7 ppb (14) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A N/A 1.7 μg/m3 (7) 21.0
 
Jan. 15, 2020, 2 p.m. 21.3 ppb (20) 2.6 ppb (2) N/A 19.0 ppb (18) N/A N/A 22.0 ppb (17) N/A N/A 2.3 μg/m3 (10) 20.0
 
Jan. 15, 2020, 1 p.m. 8.3 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
Jan. 15, 2020, noon 6.3 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
Jan. 15, 2020, 11 a.m. 4.8 ppb (4) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 0.6 μg/m3 (2) 27.0
 
Jan. 15, 2020, 10 a.m. 6.6 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 0.5 μg/m3 (2) 25.0
 
Jan. 15, 2020, 9 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 0.6 μg/m3 (2) 26.0
 
Jan. 15, 2020, 8 a.m. 3.9 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 0.9 μg/m3 (4) 27.0
 
Jan. 15, 2020, 7 a.m. 3.9 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
Jan. 15, 2020, 6 a.m. 4.0 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
Jan. 15, 2020, 5 a.m. 1.4 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 0.5 μg/m3 (2) 31.0
 
Jan. 15, 2020, 4 a.m. 3.9 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 0.5 μg/m3 (2) 28.0
 
Jan. 15, 2020, 3 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 0.8 μg/m3 (3) 27.0
 
Jan. 15, 2020, 2 a.m. 10.1 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) N/A N/A 1.3 μg/m3 (5) 24.0
 
Jan. 15, 2020, 1 a.m. 7.9 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 0.8 μg/m3 (3) 26.0
 
Jan. 15, 2020, midnight 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 0.8 μg/m3 (3) 28.0
 
Jan. 14, 2020, 11 p.m. 5.5 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
Jan. 14, 2020, 10 p.m. 3.4 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 0.5 μg/m3 (2) 30.0
 
Jan. 14, 2020, 9 p.m. 4.2 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
Jan. 14, 2020, 8 p.m. 3.9 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 1.3 μg/m3 (5) 31.0
 
Jan. 14, 2020, 7 p.m. 1.1 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Jan. 14, 2020, 6 p.m. 2.3 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
Jan. 14, 2020, 5 p.m. 1.5 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.2 μg/m3 (9) 33.0
 
Jan. 14, 2020, 4 p.m. 1.6 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.2 μg/m3 (9) 33.0
 
Jan. 14, 2020, 3 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
Jan. 14, 2020, 2 p.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.9 μg/m3 (12) 33.0
 
Jan. 14, 2020, 1 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.6 μg/m3 (11) 34.0
 
Jan. 14, 2020, noon 1.4 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
Jan. 14, 2020, 11 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 1.9 μg/m3 (8) 33.0
 
Jan. 14, 2020, 10 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.5 μg/m3 (6) 32.0
 
Jan. 14, 2020, 9 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Jan. 14, 2020, 8 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Jan. 14, 2020, 7 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
Jan. 14, 2020, 6 a.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
Jan. 14, 2020, 5 a.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 14, 2020, 4 a.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Jan. 14, 2020, 3 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
Jan. 14, 2020, 2 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 14, 2020, 1 a.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Jan. 14, 2020, midnight 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 13, 2020, 11 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
Jan. 13, 2020, 10 p.m. 11.4 ppb (11) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 2.2 μg/m3 (9) 26.0
 
Jan. 13, 2020, 9 p.m. 12.3 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
Jan. 13, 2020, 8 p.m. 10.1 ppb (9) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 1.2 μg/m3 (5) 26.0
 
Jan. 13, 2020, 7 p.m. 10.1 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
Jan. 13, 2020, 6 p.m. 9.9 ppb (9) 3.1 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 0.8 μg/m3 (3) 26.0
 
Jan. 13, 2020, 5 p.m. 7.7 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 0.6 μg/m3 (2) 27.0
 
Jan. 13, 2020, 4 p.m. 11.5 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 13, 2020, 3 p.m. 15.0 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) N/A N/A 1.7 μg/m3 (7) 19.0
 
Jan. 13, 2020, 2 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
Jan. 13, 2020, 1 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 1.1 μg/m3 (5) 34.0
 
Jan. 13, 2020, noon 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 0.7 μg/m3 (3) 32.0
 
Jan. 13, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
Jan. 13, 2020, 10 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 0.8 μg/m3 (3) 33.0
 
Jan. 13, 2020, 9 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
Jan. 13, 2020, 8 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.7 μg/m3 (3) 32.0
 
Jan. 13, 2020, 7 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
Jan. 13, 2020, 6 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
Jan. 13, 2020, 5 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
Jan. 13, 2020, 4 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
Jan. 13, 2020, 3 a.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 2.4 μg/m3 (10) 29.0
 
Jan. 13, 2020, 2 a.m. 1.9 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 1.3 μg/m3 (5) 30.0
 
Jan. 13, 2020, 1 a.m. 4.3 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
 
Jan. 13, 2020, midnight 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
Jan. 12, 2020, 11 p.m. 2.0 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
Jan. 12, 2020, 10 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
Jan. 12, 2020, 9 p.m. 4.8 ppb (4) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
Jan. 12, 2020, 8 p.m. 7.3 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Jan. 12, 2020, 7 p.m. 5.0 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
Jan. 12, 2020, 6 p.m. 6.1 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0