ID: 1064

AQSQID: 490571003

Site Name: Harrisville

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

Updated: Jan. 25, 2021, 12:31 a.m.

Location: Ogden (N Ogden Ranchettes), UT

Reporting: True, Located: True

Current AQI: 20.0

Ogden (N Ogden Ranchettes) UT, US: 41.302799, -111.988297

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2021, 11 p.m. 10.4 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 24, 2021, 10 p.m. 8.7 ppb (9) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 24, 2021, 9 p.m. 7.6 ppb (8) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 24, 2021, 8 p.m. 8.8 ppb (9) 3.9 ppb (4) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 24, 2021, 7 p.m. 10.6 ppb (10) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 24, 2021, 6 p.m. 17.1 ppb (17) 8.4 ppb (8) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 24, 2021, 5 p.m. 18.5 ppb (18) 8.9 ppb (9) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 24, 2021, 4 p.m. 17.1 ppb (17) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A 16.0 ppb (15) N/A N/A N/A 17.0
 
Jan. 24, 2021, 3 p.m. 28.7 ppb (28) 8.0 ppb (8) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (10) N/A N/A N/A 28.0
 
Jan. 24, 2021, 2 p.m. 18.6 ppb (18) 2.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 11.0 ppb (11) N/A N/A N/A 18.0
 
Jan. 24, 2021, 1 p.m. 9.6 ppb (10) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 24, 2021, noon 5.6 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 24, 2021, 10 a.m. 2.4 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 24, 2021, 9 a.m. 5.2 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 24, 2021, 8 a.m. 5.0 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 24, 2021, 7 a.m. 5.5 ppb (6) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 24, 2021, 6 a.m. 4.8 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 24, 2021, 5 a.m. 4.6 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 24, 2021, 4 a.m. 4.3 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 24, 2021, 3 a.m. 8.1 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 24, 2021, 2 a.m. 12.3 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Jan. 24, 2021, 1 a.m. 12.2 ppb (12) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 16.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 24, 2021, midnight 15.0 ppb (15) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 13.0 ppb (13) N/A N/A N/A 15.0
 
Jan. 23, 2021, 11 p.m. 10.0 ppb (10) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) N/A N/A N/A 14.0
 
Jan. 23, 2021, 10 p.m. 5.2 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 23, 2021, 9 p.m. 9.1 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (7) N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Jan. 23, 2021, 8 p.m. 9.8 ppb (10) 1.7 ppb (2) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Jan. 23, 2021, 7 p.m. 9.2 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Jan. 23, 2021, 6 p.m. 7.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Jan. 23, 2021, 5 p.m. 7.5 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 23, 2021, 4 p.m. 8.4 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 23, 2021, 3 p.m. 8.2 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 23, 2021, 2 p.m. 9.9 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 23, 2021, 1 p.m. 8.5 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 23, 2021, noon 7.9 ppb (8) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 23, 2021, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 23, 2021, 9 a.m. 5.8 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 23, 2021, 8 a.m. 6.4 ppb (7) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 23, 2021, 7 a.m. 7.6 ppb (8) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 23, 2021, 6 a.m. 10.7 ppb (11) 0.0 ppb (0) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 23, 2021, 5 a.m. 10.1 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 23, 2021, 4 a.m. 11.0 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 23, 2021, 3 a.m. 25.6 ppb (25) 1.0 ppb (1) N/A 24.0 ppb (23) N/A N/A 6.0 ppb (6) N/A N/A N/A 25.0
 
Jan. 23, 2021, 2 a.m. 25.6 ppb (25) 1.7 ppb (2) N/A 23.0 ppb (22) N/A N/A 7.0 ppb (7) N/A N/A N/A 25.0
 
Jan. 23, 2021, 1 a.m. 14.7 ppb (14) 0.2 ppb (1) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Jan. 23, 2021, midnight 16.2 ppb (16) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 16.0 ppb (15) N/A N/A N/A 16.0
 
Jan. 22, 2021, 11 p.m. 19.0 ppb (18) 1.2 ppb (2) N/A 17.0 ppb (17) N/A N/A 17.0 ppb (16) N/A N/A N/A 18.0
 
Jan. 22, 2021, 10 p.m. 24.7 ppb (24) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (13) N/A N/A N/A 24.0
 
Jan. 22, 2021, 9 p.m. 22.5 ppb (22) 6.7 ppb (7) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) N/A N/A N/A 22.0
 
Jan. 22, 2021, 8 p.m. 25.5 ppb (25) 10.8 ppb (11) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) N/A N/A N/A 25.0
 
Jan. 22, 2021, 7 p.m. 44.2 ppb (42) 24.2 ppb (23) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (12) N/A N/A N/A 42.0
 
Jan. 22, 2021, 6 p.m. 48.0 ppb (46) 25.9 ppb (25) N/A 22.0 ppb (21) N/A N/A 10.0 ppb (10) N/A N/A N/A 46.0
 
Jan. 22, 2021, 5 p.m. 67.2 ppb (66) 38.4 ppb (37) N/A 28.0 ppb (27) N/A N/A 5.0 ppb (5) N/A N/A N/A 66.0
 
Jan. 22, 2021, 4 p.m. 67.7 ppb (66) 39.6 ppb (38) N/A 28.0 ppb (27) N/A N/A 5.0 ppb (5) N/A N/A N/A 66.0
 
Jan. 22, 2021, 3 p.m. 60.0 ppb (58) 29.8 ppb (29) N/A 30.0 ppb (29) N/A N/A 4.0 ppb (4) N/A N/A N/A 58.0
 
Jan. 22, 2021, 2 p.m. 44.8 ppb (43) 11.7 ppb (12) N/A 33.0 ppb (32) N/A N/A 1.0 ppb (1) N/A N/A N/A 43.0
 
Jan. 22, 2021, 1 p.m. 41.1 ppb (39) 8.7 ppb (9) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A N/A 39.0
 
Jan. 22, 2021, noon 43.3 ppb (41) 14.6 ppb (14) N/A 28.0 ppb (27) N/A N/A 2.0 ppb (2) N/A N/A N/A 41.0
 
Jan. 22, 2021, 11 a.m. 59.1 ppb (57) 30.2 ppb (29) N/A 28.0 ppb (27) N/A N/A N/A N/A N/A N/A 57.0
 
Jan. 22, 2021, 10 a.m. 54.8 ppb (52) 25.6 ppb (25) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 52.0
 
Jan. 22, 2021, 9 a.m. 56.6 ppb (54) 27.6 ppb (27) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 54.0
 
Jan. 22, 2021, 8 a.m. 58.9 ppb (57) 26.6 ppb (26) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A N/A 57.0
 
Jan. 22, 2021, 7 a.m. 59.8 ppb (58) 28.3 ppb (27) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) N/A N/A N/A 58.0
 
Jan. 22, 2021, 6 a.m. 59.1 ppb (57) 28.3 ppb (27) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) N/A N/A N/A 57.0
 
Jan. 22, 2021, 5 a.m. 53.7 ppb (51) 22.0 ppb (21) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) N/A N/A N/A 51.0
 
Jan. 22, 2021, 4 a.m. 35.1 ppb (34) 5.0 ppb (5) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) N/A N/A N/A 34.0
 
Jan. 22, 2021, 3 a.m. 51.7 ppb (49) 17.3 ppb (17) N/A 34.0 ppb (33) N/A N/A 0.0 ppb (0) N/A N/A N/A 49.0
 
Jan. 22, 2021, 2 a.m. 50.0 ppb (48) 13.4 ppb (13) N/A 36.0 ppb (34) N/A N/A 0.0 ppb (0) N/A N/A N/A 48.0
 
Jan. 22, 2021, 1 a.m. 38.9 ppb (37) 3.5 ppb (4) N/A 35.0 ppb (34) N/A N/A 1.0 ppb (1) N/A N/A N/A 37.0
 
Jan. 22, 2021, midnight 48.2 ppb (46) 13.2 ppb (13) N/A 35.0 ppb (34) N/A N/A 1.0 ppb (1) N/A N/A N/A 46.0
 
Jan. 21, 2021, 11 p.m. 29.8 ppb (29) 5.4 ppb (6) N/A 24.0 ppb (23) N/A N/A 10.0 ppb (10) N/A N/A N/A 29.0
 
Jan. 21, 2021, 10 p.m. 40.4 ppb (39) 14.1 ppb (14) N/A 26.0 ppb (25) N/A N/A 9.0 ppb (9) N/A N/A N/A 39.0
 
Jan. 21, 2021, 9 p.m. 33.3 ppb (32) 11.9 ppb (12) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) N/A N/A N/A 32.0
 
Jan. 21, 2021, 8 p.m. 34.6 ppb (33) 14.6 ppb (14) N/A 20.0 ppb (19) N/A N/A 13.0 ppb (13) N/A N/A N/A 33.0
 
Jan. 21, 2021, 7 p.m. 34.4 ppb (33) 14.8 ppb (14) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (13) N/A N/A N/A 33.0
 
Jan. 21, 2021, 6 p.m. 42.8 ppb (41) 23.2 ppb (22) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) N/A N/A N/A 41.0
 
Jan. 21, 2021, 5 p.m. 62.5 ppb (61) 38.7 ppb (37) N/A 23.0 ppb (22) N/A N/A 8.0 ppb (8) N/A N/A N/A 61.0
 
Jan. 21, 2021, 4 p.m. 100.7 ppb (101) 69.8 ppb (68) N/A 31.0 ppb (30) N/A N/A 3.0 ppb (3) N/A N/A N/A 101.0
 
Jan. 21, 2021, 3 p.m. 105.4 ppb (102) 73.5 ppb (72) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A N/A 102.0
 
Jan. 21, 2021, 2 p.m. 93.7 ppb (94) 63.8 ppb (62) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 94.0
 
Jan. 21, 2021, 1 p.m. 68.7 ppb (67) 37.3 ppb (36) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) N/A N/A N/A 67.0
 
Jan. 21, 2021, noon 48.6 ppb (46) 20.1 ppb (19) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 46.0
 
Jan. 21, 2021, 11 a.m. 48.1 ppb (46) 20.8 ppb (20) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) N/A N/A N/A 46.0
 
Jan. 21, 2021, 10 a.m. 51.6 ppb (49) 24.9 ppb (24) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 49.0
 
Jan. 21, 2021, 9 a.m. 51.4 ppb (49) 23.5 ppb (23) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) N/A N/A N/A 49.0
 
Jan. 21, 2021, 8 a.m. 50.5 ppb (48) 23.8 ppb (23) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 48.0
 
Jan. 21, 2021, 7 a.m. 51.1 ppb (49) 21.6 ppb (21) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 49.0
 
Jan. 21, 2021, 6 a.m. 44.1 ppb (42) 15.6 ppb (15) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 42.0
 
Jan. 21, 2021, 5 a.m. 41.8 ppb (40) 13.4 ppb (13) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 40.0
 
Jan. 21, 2021, 4 a.m. 62.6 ppb (61) 30.0 ppb (29) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A N/A 61.0
 
Jan. 21, 2021, 3 a.m. 60.5 ppb (58) 27.1 ppb (26) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) N/A N/A N/A 58.0
 
Jan. 21, 2021, 2 a.m. 58.2 ppb (56) 22.5 ppb (22) N/A 35.0 ppb (34) N/A N/A 0.0 ppb (0) N/A N/A N/A 56.0
 
Jan. 21, 2021, 1 a.m. 47.4 ppb (45) 10.7 ppb (11) N/A 36.0 ppb (34) N/A N/A 0.0 ppb (0) N/A N/A N/A 45.0
 
Jan. 21, 2021, midnight 34.4 ppb (33) 4.9 ppb (5) N/A 29.0 ppb (28) N/A N/A 5.0 ppb (5) N/A N/A N/A 33.0
 
Jan. 20, 2021, 11 p.m. 20.5 ppb (20) 4.6 ppb (5) N/A 15.0 ppb (15) N/A N/A 18.0 ppb (17) N/A N/A N/A 20.0
 
Jan. 20, 2021, 10 p.m. 17.8 ppb (17) 6.1 ppb (6) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 20, 2021, 9 p.m. 17.3 ppb (17) 7.1 ppb (7) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Jan. 20, 2021, 8 p.m. 25.7 ppb (25) 13.2 ppb (13) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) N/A N/A N/A 25.0
 
Jan. 20, 2021, 7 p.m. 31.3 ppb (30) 16.7 ppb (16) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) N/A N/A N/A 30.0
 
Jan. 20, 2021, 6 p.m. 38.7 ppb (37) 20.8 ppb (20) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (16) N/A N/A N/A 37.0
 
Jan. 20, 2021, 5 p.m. 53.0 ppb (50) 30.5 ppb (29) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) N/A N/A N/A 50.0
 
Jan. 20, 2021, 4 p.m. 82.5 ppb (82) 54.8 ppb (52) N/A 27.0 ppb (26) N/A N/A 5.0 ppb (5) N/A N/A N/A 82.0
 
Jan. 20, 2021, 3 p.m. 80.3 ppb (80) 49.2 ppb (47) N/A 31.0 ppb (30) N/A N/A 1.0 ppb (1) N/A N/A N/A 80.0
 
Jan. 20, 2021, 2 p.m. 63.4 ppb (62) 30.6 ppb (29) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) N/A N/A N/A 62.0
 
Jan. 20, 2021, 1 p.m. 48.5 ppb (46) 15.2 ppb (15) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) N/A N/A N/A 46.0
 
Jan. 20, 2021, noon 43.4 ppb (41) 13.4 ppb (13) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 41.0
 
Jan. 20, 2021, 11 a.m. 39.5 ppb (38) 10.4 ppb (10) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 38.0
 
Jan. 20, 2021, 10 a.m. 36.7 ppb (35) 8.5 ppb (9) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 35.0
 
Jan. 20, 2021, 9 a.m. 43.8 ppb (42) 17.7 ppb (17) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 42.0
 
Jan. 20, 2021, 8 a.m. 47.1 ppb (45) 19.7 ppb (19) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) N/A N/A N/A 45.0
 
Jan. 20, 2021, 7 a.m. 41.4 ppb (40) 14.9 ppb (15) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 40.0
 
Jan. 20, 2021, 6 a.m. 54.2 ppb (52) 23.7 ppb (23) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) N/A N/A N/A 52.0
 
Jan. 20, 2021, 5 a.m. 53.2 ppb (51) 24.3 ppb (23) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 51.0
 
Jan. 20, 2021, 4 a.m. 56.0 ppb (54) 22.7 ppb (22) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) N/A N/A N/A 54.0
 
Jan. 20, 2021, 3 a.m. 51.3 ppb (49) 16.7 ppb (16) N/A 34.0 ppb (33) N/A N/A 0.0 ppb (0) N/A N/A N/A 49.0
 
Jan. 20, 2021, 2 a.m. 38.0 ppb (36) 7.1 ppb (7) N/A 30.0 ppb (29) N/A N/A 1.0 ppb (1) N/A N/A N/A 36.0
 
Jan. 20, 2021, 1 a.m. 20.5 ppb (20) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) N/A N/A N/A 20.0
 
Jan. 20, 2021, midnight 11.2 ppb (11) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 19, 2021, 11 p.m. 4.7 ppb (5) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 19, 2021, 10 p.m. 0.3 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 9 p.m. -0.2 ppb (0) 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 8 p.m. -0.1 ppb (0) 0.3 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 7 p.m. -0.1 ppb (0) 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 6 p.m. -0.2 ppb (0) 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 5 p.m. -0.1 ppb (0) 0.3 ppb (1) N/A -1.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Jan. 19, 2021, 4 p.m. 0.2 ppb (1) 0.3 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 3 p.m. 0.3 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 2 p.m. 0.2 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 1 p.m. 0.1 ppb (1) 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, noon 0.0 ppb (0) 0.1 ppb (1) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 11 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Jan. 19, 2021, 10 a.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 9 a.m. 0.3 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 19, 2021, 8 a.m. 0.6 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Jan. 19, 2021, 7 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
Jan. 19, 2021, 6 a.m. 2.7 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 19, 2021, 5 a.m. 4.7 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 19, 2021, 4 a.m. 6.0 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Jan. 19, 2021, 3 a.m. 7.8 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 19, 2021, 2 a.m. 6.2 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 19, 2021, 1 a.m. 5.4 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 19, 2021, midnight 4.1 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A N/A N/A 28.0
 
Jan. 18, 2021, 11 p.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Jan. 18, 2021, 10 p.m. 2.8 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Jan. 18, 2021, 9 p.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 18, 2021, 8 p.m. 6.3 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 18, 2021, 7 p.m. 8.5 ppb (9) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 18, 2021, 6 p.m. 12.3 ppb (12) 4.3 ppb (5) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 18, 2021, 5 p.m. 17.4 ppb (17) 5.7 ppb (6) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 18, 2021, 4 p.m. 45.5 ppb (43) 22.2 ppb (21) N/A 23.0 ppb (22) N/A N/A 9.0 ppb (9) N/A N/A N/A 43.0
 
Jan. 18, 2021, 3 p.m. 60.7 ppb (59) 29.7 ppb (29) N/A 30.0 ppb (29) N/A N/A 1.0 ppb (1) N/A N/A N/A 59.0
 
Jan. 18, 2021, 2 p.m. 59.1 ppb (57) 28.6 ppb (27) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) N/A N/A N/A 57.0
 
Jan. 18, 2021, 1 p.m. 49.7 ppb (47) 20.9 ppb (20) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) N/A N/A N/A 47.0
 
Jan. 18, 2021, noon 49.3 ppb (47) 19.6 ppb (19) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) N/A N/A N/A 47.0
 
Jan. 18, 2021, 11 a.m. 36.2 ppb (35) 9.7 ppb (10) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 35.0
 
Jan. 18, 2021, 10 a.m. 30.1 ppb (29) 4.5 ppb (5) N/A 25.0 ppb (24) N/A N/A 0.0 ppb (0) N/A N/A N/A 29.0
 
Jan. 18, 2021, 9 a.m. 34.0 ppb (33) 8.0 ppb (8) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 33.0
 
Jan. 18, 2021, 8 a.m. 36.0 ppb (34) 9.4 ppb (9) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 34.0
 
Jan. 18, 2021, 7 a.m. 33.7 ppb (32) 7.1 ppb (7) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) N/A N/A N/A 32.0
 
Jan. 18, 2021, 6 a.m. 29.8 ppb (29) 2.8 ppb (3) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) N/A N/A N/A 29.0
 
Jan. 18, 2021, 5 a.m. 31.6 ppb (30) 2.6 ppb (3) N/A 29.0 ppb (28) N/A N/A 1.0 ppb (1) N/A N/A N/A 30.0
 
Jan. 18, 2021, 4 a.m. 28.3 ppb (27) 1.4 ppb (2) N/A 27.0 ppb (26) N/A N/A 2.0 ppb (2) N/A N/A N/A 27.0
 
Jan. 18, 2021, 3 a.m. 35.3 ppb (34) 5.2 ppb (5) N/A 30.0 ppb (29) N/A N/A 1.0 ppb (1) N/A N/A N/A 34.0
 
Jan. 18, 2021, 2 a.m. 30.8 ppb (30) 3.0 ppb (3) N/A 27.0 ppb (26) N/A N/A 2.0 ppb (2) N/A N/A N/A 30.0
 
Jan. 18, 2021, 1 a.m. 21.4 ppb (21) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A 15.0 ppb (14) N/A N/A N/A 21.0
 
Jan. 18, 2021, midnight 10.8 ppb (11) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0