ID: 2834

AQSQID: 490353013

Site Name: Herriman #3

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 17, 2021, 6:31 a.m.

Location: Herriman (Foothills), UT

Reporting: True, Located: True

Current AQI: 24.0

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. 17, 2021, 5 a.m. 9.8 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) N/A N/A 5.6 μg/m3 (24) 24.0
 
Jan. 17, 2021, 4 a.m. 10.1 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2021, 3 a.m. 9.1 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 17, 2021, 2 a.m. 9.5 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) N/A N/A 5.8 μg/m3 (25) 25.0
 
Jan. 17, 2021, 1 a.m. 11.1 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 11.3 μg/m3 (48) 48.0
 
Jan. 17, 2021, midnight 7.9 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 16, 2021, 11 p.m. 4.5 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Jan. 16, 2021, 10 p.m. 4.3 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A 6.1 μg/m3 (26) 36.0
 
Jan. 16, 2021, 9 p.m. 6.0 ppb (6) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 16, 2021, 8 p.m. 12.4 ppb (12) 3.2 ppb (4) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2021, 7 p.m. 12.8 ppb (13) 3.3 ppb (4) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) N/A N/A 14.3 μg/m3 (56) 56.0
 
Jan. 16, 2021, 6 p.m. 9.7 ppb (10) 3.3 ppb (4) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) N/A N/A 15.1 μg/m3 (58) 58.0
 
Jan. 16, 2021, 5 p.m. 5.4 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 16, 2021, 4 p.m. 14.4 ppb (14) 2.9 ppb (3) N/A 12.0 ppb (12) N/A N/A 26.0 ppb (25) N/A N/A 12.2 μg/m3 (52) 52.0
 
Jan. 16, 2021, 3 p.m. 33.3 ppb (32) 8.4 ppb (8) N/A 25.0 ppb (24) N/A N/A 7.0 ppb (7) N/A N/A 14.4 μg/m3 (56) 56.0
 
Jan. 16, 2021, 2 p.m. 38.8 ppb (37) 6.8 ppb (7) N/A 32.0 ppb (31) N/A N/A 2.0 ppb (2) N/A N/A 13.1 μg/m3 (54) 54.0
 
Jan. 16, 2021, 1 p.m. 21.7 ppb (21) 3.1 ppb (3) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (15) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 16, 2021, noon 6.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 4.6 μg/m3 (20) 27.0
 
Jan. 16, 2021, 11 a.m. 9.3 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 16, 2021, 10 a.m. 13.9 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 16, 2021, 9 a.m. 21.7 ppb (21) 0.9 ppb (1) N/A 21.0 ppb (20) N/A N/A 11.0 ppb (11) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 16, 2021, 8 a.m. 19.8 ppb (19) 0.9 ppb (1) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 16, 2021, 7 a.m. 23.5 ppb (23) 1.1 ppb (2) N/A 23.0 ppb (22) N/A N/A 9.0 ppb (9) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 16, 2021, 6 a.m. 23.7 ppb (23) 1.0 ppb (1) N/A 23.0 ppb (22) N/A N/A 11.0 ppb (11) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 16, 2021, 5 a.m. 23.4 ppb (23) 1.1 ppb (2) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) N/A N/A 5.1 μg/m3 (22) 23.0
 
Jan. 16, 2021, 4 a.m. 9.6 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) N/A N/A 1.9 μg/m3 (8) 23.0
 
Jan. 16, 2021, 3 a.m. 8.9 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
Jan. 16, 2021, 2 a.m. 12.3 ppb (12) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) N/A N/A 2.8 μg/m3 (12) 22.0
 
Jan. 16, 2021, 1 a.m. 14.3 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A 21.0 ppb (20) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 16, 2021, midnight 10.7 ppb (11) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
Jan. 15, 2021, 11 p.m. 6.6 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 1.6 μg/m3 (7) 33.0
 
Jan. 15, 2021, 10 p.m. 3.8 ppb (4) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
Jan. 15, 2021, 9 p.m. 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 1.4 μg/m3 (6) 37.0
 
Jan. 15, 2021, 8 p.m. 5.5 ppb (6) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 1.7 μg/m3 (8) 35.0
 
Jan. 15, 2021, 7 p.m. 6.9 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
Jan. 15, 2021, 6 p.m. 12.3 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) N/A N/A 2.3 μg/m3 (10) 30.0
 
Jan. 15, 2021, 5 p.m. 15.6 ppb (15) 6.3 ppb (6) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 2.1 μg/m3 (9) 27.0
 
Jan. 15, 2021, 4 p.m. 10.7 ppb (11) 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
Jan. 15, 2021, 3 p.m. 14.8 ppb (14) 2.5 ppb (3) N/A 13.0 ppb (13) N/A N/A 22.0 ppb (21) N/A N/A 1.6 μg/m3 (7) 21.0
 
Jan. 15, 2021, 2 p.m. 13.6 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) N/A N/A 1.3 μg/m3 (6) 19.0
 
Jan. 15, 2021, 1 p.m. 11.0 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 0.7 μg/m3 (3) 22.0
 
Jan. 15, 2021, noon 6.0 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 0.6 μg/m3 (3) 27.0
 
Jan. 15, 2021, 11 a.m. 6.5 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 0.6 μg/m3 (3) 27.0
 
Jan. 15, 2021, 10 a.m. 7.2 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) N/A N/A 0.8 μg/m3 (4) 26.0
 
Jan. 15, 2021, 9 a.m. 6.6 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 0.8 μg/m3 (4) 27.0
 
Jan. 15, 2021, 8 a.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 0.6 μg/m3 (3) 29.0
 
Jan. 15, 2021, 7 a.m. 4.5 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 0.8 μg/m3 (4) 28.0
 
Jan. 15, 2021, 6 a.m. 4.4 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 1.3 μg/m3 (6) 27.0
 
Jan. 15, 2021, 5 a.m. 4.4 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
Jan. 15, 2021, 4 a.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A N/A 0.8 μg/m3 (4) 30.0
 
Jan. 15, 2021, 3 a.m. 6.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
Jan. 15, 2021, 2 a.m. 7.6 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 1.1 μg/m3 (5) 27.0
 
Jan. 15, 2021, 1 a.m. 8.7 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
Jan. 15, 2021, midnight 6.5 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 1.7 μg/m3 (8) 30.0
 
Jan. 14, 2021, 11 p.m. 3.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
Jan. 14, 2021, 10 p.m. 2.5 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 0.6 μg/m3 (3) 38.0
 
Jan. 14, 2021, 9 p.m. 2.5 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 0.8 μg/m3 (4) 39.0
 
Jan. 14, 2021, 8 p.m. 3.1 ppb (3) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
Jan. 14, 2021, 7 p.m. 3.0 ppb (3) 1.5 ppb (2) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
Jan. 14, 2021, 6 p.m. 3.5 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 1.0 μg/m3 (5) 37.0
 
Jan. 14, 2021, 5 p.m. 5.3 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 1.0 μg/m3 (5) 34.0
 
Jan. 14, 2021, 4 p.m. 6.4 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 0.8 μg/m3 (4) 32.0
 
Jan. 14, 2021, 3 p.m. 12.4 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
Jan. 14, 2021, 2 p.m. 7.2 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A N/A 0.7 μg/m3 (3) 29.0
 
Jan. 14, 2021, 1 p.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A N/A 0.4 μg/m3 (2) 30.0
 
Jan. 14, 2021, noon 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 0.3 μg/m3 (2) 33.0
 
Jan. 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Jan. 11, 2021, 4 p.m. 19.0 ppb (18) 6.3 ppb (6) N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) N/A N/A 13.2 μg/m3 (54) 54.0
 
Jan. 11, 2021, 3 p.m. 26.9 ppb (26) 6.6 ppb (7) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 11, 2021, 2 p.m. 18.0 ppb (17) 1.8 ppb (2) N/A 16.0 ppb (16) N/A N/A 16.0 ppb (15) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 11, 2021, 1 p.m. 11.4 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 8.9 μg/m3 (38) 38.0
 
Jan. 11, 2021, noon 8.3 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 11, 2021, 10 a.m. 7.7 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 11, 2021, 9 a.m. 7.7 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 11, 2021, 8 a.m. 7.9 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A 8.5 μg/m3 (36) 36.0
 
Jan. 11, 2021, 7 a.m. 7.1 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 11, 2021, 6 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 11, 2021, 5 a.m. 8.5 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 11, 2021, 4 a.m. 11.1 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) N/A N/A 7.3 μg/m3 (31) 31.0
 
Jan. 11, 2021, 3 a.m. 12.4 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) N/A N/A 7.7 μg/m3 (33) 33.0
 
Jan. 11, 2021, 2 a.m. 12.0 ppb (12) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 11, 2021, 1 a.m. 11.1 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, midnight 8.7 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) N/A N/A 6.1 μg/m3 (26) 26.0
 
Jan. 10, 2021, 11 p.m. 12.9 ppb (13) 2.2 ppb (3) N/A 11.0 ppb (11) N/A N/A 25.0 ppb (24) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 10, 2021, 10 p.m. 13.1 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 10, 2021, 9 p.m. 14.7 ppb (14) 4.7 ppb (5) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 10, 2021, 8 p.m. 9.5 ppb (9) 3.1 ppb (3) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) N/A N/A 6.1 μg/m3 (26) 30.0
 
Jan. 10, 2021, 7 p.m. 6.5 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 10, 2021, 6 p.m. 12.4 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 10, 2021, 5 p.m. 12.4 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 10, 2021, 4 p.m. 13.3 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 10, 2021, 3 p.m. 9.9 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 2.2 μg/m3 (10) 21.0
 
Jan. 10, 2021, 2 p.m. 8.3 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A 1.7 μg/m3 (8) 20.0
 
Jan. 10, 2021, 1 p.m. 7.5 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) N/A N/A 1.5 μg/m3 (7) 19.0
 
Jan. 10, 2021, noon 5.6 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 1.3 μg/m3 (6) 22.0
 
Jan. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 1.3 μg/m3 (6) 22.0
 
Jan. 10, 2021, 10 a.m. 7.9 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) N/A N/A 1.3 μg/m3 (6) 18.0
 
Jan. 10, 2021, 9 a.m. 5.4 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A 1.1 μg/m3 (5) 21.0
 
Jan. 10, 2021, 8 a.m. 3.8 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) N/A N/A 1.1 μg/m3 (5) 23.0
 
Jan. 10, 2021, 7 a.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
Jan. 10, 2021, 6 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A N/A 1.6 μg/m3 (7) 21.0
 
Jan. 10, 2021, 5 a.m. 6.0 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (22) N/A N/A 1.5 μg/m3 (7) 22.0
 
Jan. 10, 2021, 4 a.m. 8.4 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 1.7 μg/m3 (8) 21.0
 
Jan. 10, 2021, 3 a.m. 4.8 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) N/A N/A 1.3 μg/m3 (6) 26.0
 
Jan. 10, 2021, 2 a.m. 7.8 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) N/A N/A 2.5 μg/m3 (11) 25.0
 
Jan. 10, 2021, 1 a.m. 5.5 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 2.0 μg/m3 (9) 31.0
 
Jan. 10, 2021, midnight 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 1.8 μg/m3 (8) 33.0
 
Jan. 9, 2021, 11 p.m. 3.6 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 2.7 μg/m3 (12) 35.0
 
Jan. 9, 2021, 10 p.m. 3.8 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
Jan. 9, 2021, 9 p.m. 3.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.7 μg/m3 (12) 37.0
 
Jan. 9, 2021, 8 p.m. 4.2 ppb (4) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 3.9 μg/m3 (17) 35.0
 
Jan. 9, 2021, 7 p.m. 5.2 ppb (5) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 4.9 μg/m3 (21) 34.0
 
Jan. 9, 2021, 6 p.m. 13.0 ppb (13) 4.8 ppb (5) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 9, 2021, 5 p.m. 19.0 ppb (18) 6.5 ppb (7) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) N/A N/A 12.8 μg/m3 (53) 53.0
 
Jan. 9, 2021, 4 p.m. 16.9 ppb (16) 5.2 ppb (5) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) N/A N/A 10.6 μg/m3 (45) 45.0
 
Jan. 9, 2021, 3 p.m. 17.2 ppb (17) 3.1 ppb (3) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 9, 2021, 2 p.m. 11.2 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 5.1 μg/m3 (22) 22.0
 
Jan. 9, 2021, 1 p.m. 7.8 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) N/A N/A 5.3 μg/m3 (23) 26.0
 
Jan. 9, 2021, noon 12.1 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) N/A N/A 10.6 μg/m3 (45) 45.0
 
Jan. 9, 2021, 11 a.m. 14.6 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Jan. 9, 2021, 10 a.m. 12.6 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) N/A N/A 17.4 μg/m3 (63) 63.0
 
Jan. 9, 2021, 9 a.m. 13.3 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 22.0 ppb (21) N/A N/A 17.6 μg/m3 (63) 63.0
 
Jan. 9, 2021, 8 a.m. 24.2 ppb (23) 1.6 ppb (2) N/A 23.0 ppb (22) N/A N/A 8.0 ppb (8) N/A N/A 17.7 μg/m3 (63) 63.0
 
Jan. 9, 2021, 7 a.m. 25.4 ppb (24) 1.1 ppb (2) N/A 25.0 ppb (24) N/A N/A 10.0 ppb (10) N/A N/A 17.7 μg/m3 (63) 63.0
 
Jan. 9, 2021, 6 a.m. 22.8 ppb (22) 1.1 ppb (2) N/A 22.0 ppb (21) N/A N/A 13.0 ppb (13) N/A N/A 14.6 μg/m3 (57) 57.0
 
Jan. 9, 2021, 5 a.m. 21.9 ppb (21) 1.1 ppb (2) N/A 21.0 ppb (20) N/A N/A 14.0 ppb (13) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 9, 2021, 4 a.m. 17.4 ppb (17) 1.1 ppb (2) N/A 17.0 ppb (17) N/A N/A 17.0 ppb (16) N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 9, 2021, 3 a.m. 22.2 ppb (21) 1.4 ppb (2) N/A 21.0 ppb (20) N/A N/A 10.0 ppb (10) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 9, 2021, 2 a.m. 19.7 ppb (19) 0.7 ppb (1) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (13) N/A N/A 11.6 μg/m3 (49) 49.0
 
Jan. 9, 2021, 1 a.m. 15.0 ppb (15) 0.8 ppb (1) N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) N/A N/A 10.1 μg/m3 (43) 43.0
 
Jan. 9, 2021, midnight 12.0 ppb (12) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) N/A N/A 9.2 μg/m3 (39) 39.0
 
Jan. 8, 2021, 11 p.m. 10.5 ppb (10) 1.5 ppb (2) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 9.3 μg/m3 (39) 39.0
 
Jan. 8, 2021, 10 p.m. 8.3 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 8, 2021, 9 p.m. 7.4 ppb (7) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 8.7 μg/m3 (37) 37.0
 
Jan. 8, 2021, 8 p.m. 8.3 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 8, 2021, 7 p.m. 14.6 ppb (14) 5.5 ppb (6) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 8, 2021, 6 p.m. 15.9 ppb (15) 6.4 ppb (7) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 8, 2021, 5 p.m. 12.1 ppb (12) 4.1 ppb (4) N/A 8.0 ppb (8) N/A N/A 29.0 ppb (27) N/A N/A 9.4 μg/m3 (40) 40.0
 
Jan. 8, 2021, 4 p.m. 18.6 ppb (18) 6.8 ppb (7) N/A 12.0 ppb (12) N/A N/A 21.0 ppb (20) N/A N/A 4.4 μg/m3 (19) 20.0
 
Jan. 8, 2021, 3 p.m. 23.4 ppb (23) 10.3 ppb (10) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) N/A N/A 2.5 μg/m3 (11) 23.0
 
Jan. 8, 2021, 2 p.m. 15.0 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) N/A N/A 2.7 μg/m3 (12) 18.0
 
Jan. 8, 2021, 1 p.m. 9.1 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 1.7 μg/m3 (8) 22.0
 
Jan. 8, 2021, noon 10.1 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 1.4 μg/m3 (6) 20.0
 
Jan. 8, 2021, 11 a.m. 7.1 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) N/A N/A 1.1 μg/m3 (5) 21.0
 
Jan. 8, 2021, 10 a.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 0.8 μg/m3 (4) 24.0
 
Jan. 8, 2021, 9 a.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A 0.5 μg/m3 (3) 25.0
 
Jan. 8, 2021, 8 a.m. 4.1 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 0.5 μg/m3 (3) 26.0
 
Jan. 8, 2021, 7 a.m. 4.6 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A N/A 0.6 μg/m3 (3) 25.0
 
Jan. 8, 2021, 6 a.m. 4.7 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
Jan. 8, 2021, 5 a.m. 6.9 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) N/A N/A 1.4 μg/m3 (6) 24.0
 
Jan. 8, 2021, 4 a.m. 8.3 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) N/A N/A 1.5 μg/m3 (7) 23.0
 
Jan. 8, 2021, 3 a.m. 9.1 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 2.3 μg/m3 (10) 22.0
 
Jan. 8, 2021, 2 a.m. 6.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
Jan. 8, 2021, 1 a.m. 6.7 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
Jan. 8, 2021, midnight 7.9 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 2.8 μg/m3 (12) 24.0
 
Jan. 7, 2021, 11 p.m. 3.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 2.5 μg/m3 (11) 34.0
 
Jan. 7, 2021, 10 p.m. 3.7 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 3.2 μg/m3 (14) 35.0
 
Jan. 7, 2021, 9 p.m. 5.6 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 4.4 μg/m3 (19) 35.0
 
Jan. 7, 2021, 8 p.m. 11.8 ppb (12) 4.4 ppb (5) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
Jan. 7, 2021, 7 p.m. 21.0 ppb (20) 8.5 ppb (9) N/A 13.0 ppb (13) N/A N/A 29.0 ppb (27) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 7, 2021, 6 p.m. 14.8 ppb (14) 5.7 ppb (6) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 9.4 μg/m3 (40) 40.0
 
Jan. 7, 2021, 5 p.m. 17.2 ppb (17) 6.6 ppb (7) N/A 11.0 ppb (11) N/A N/A 27.0 ppb (25) N/A N/A 9.7 μg/m3 (41) 41.0
 
Jan. 7, 2021, 4 p.m. 22.2 ppb (21) 8.2 ppb (8) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 7, 2021, 3 p.m. 20.1 ppb (19) 4.2 ppb (4) N/A 16.0 ppb (16) N/A N/A 17.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 7, 2021, 2 p.m. 20.5 ppb (20) 1.9 ppb (2) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (14) N/A N/A 4.4 μg/m3 (19) 20.0
 
Jan. 7, 2021, 1 p.m. 15.6 ppb (15) 1.2 ppb (2) N/A 15.0 ppb (15) N/A N/A 18.0 ppb (17) N/A N/A 2.7 μg/m3 (12) 17.0
 
Jan. 7, 2021, noon 11.1 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 2.4 μg/m3 (10) 22.0