ID: 2954

AQSQID: 490210005

Site Name: Enoch

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

Updated: Jan. 22, 2021, 10:31 a.m.

Location: Cedar City (3860 N), UT

Reporting: True, Located: True

Current AQI: 28.0

Cedar City (3860 N) UT, US: 37.747445, -113.055524

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2021, 9 a.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
Jan. 22, 2021, 8 a.m. 6.8 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) N/A N/A 2.2 μg/m3 (10) 23.0
 
Jan. 22, 2021, 7 a.m. 7.2 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) N/A N/A 2.9 μg/m3 (13) 23.0
 
Jan. 22, 2021, 6 a.m. 4.8 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Jan. 22, 2021, 5 a.m. 4.9 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Jan. 22, 2021, 4 a.m. 9.4 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) N/A N/A 3.1 μg/m3 (13) 20.0
 
Jan. 22, 2021, 3 a.m. 12.3 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) N/A N/A 2.9 μg/m3 (13) 18.0
 
Jan. 22, 2021, 2 a.m. 12.8 ppb (13) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A 21.0 ppb (20) N/A N/A 4.1 μg/m3 (18) 20.0
 
Jan. 22, 2021, 1 a.m. 11.3 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) N/A N/A 5.1 μg/m3 (22) 23.0
 
Jan. 22, 2021, midnight 4.9 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 3.4 μg/m3 (15) 29.0
 
Jan. 21, 2021, 11 p.m. 3.2 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
Jan. 21, 2021, 10 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 1.6 μg/m3 (7) 34.0
 
Jan. 21, 2021, 9 p.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
Jan. 21, 2021, 8 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 1.9 μg/m3 (8) 34.0
 
Jan. 21, 2021, 7 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
Jan. 21, 2021, 6 p.m. 8.8 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) N/A N/A 4.7 μg/m3 (20) 27.0
 
Jan. 21, 2021, 5 p.m. 7.8 ppb (8) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 21, 2021, 4 p.m. 16.1 ppb (16) 6.8 ppb (7) N/A 9.0 ppb (9) N/A N/A 16.0 ppb (15) N/A N/A 5.8 μg/m3 (25) 25.0
 
Jan. 21, 2021, 3 p.m. 48.0 ppb (46) 30.3 ppb (29) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (5) N/A N/A 6.8 μg/m3 (29) 46.0
 
Jan. 21, 2021, 2 p.m. 22.1 ppb (21) 9.2 ppb (9) N/A 13.0 ppb (13) N/A N/A 9.0 ppb (9) N/A N/A 4.8 μg/m3 (20) 21.0
 
Jan. 21, 2021, 1 p.m. 102.7 ppb (102) 79.7 ppb (79) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (25) 102.0
 
Jan. 21, 2021, noon 28.4 ppb (27) 11.1 ppb (11) N/A 17.0 ppb (17) N/A N/A 6.0 ppb (6) N/A N/A 2.6 μg/m3 (11) 27.0
 
Jan. 21, 2021, 11 a.m. 14.8 ppb (14) 2.6 ppb (3) N/A 12.0 ppb (12) N/A N/A 11.0 ppb (11) N/A N/A 2.8 μg/m3 (12) 14.0
 
Jan. 21, 2021, 10 a.m. 15.0 ppb (15) 2.0 ppb (2) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) N/A N/A 2.5 μg/m3 (11) 15.0
 
Jan. 21, 2021, 9 a.m. 14.9 ppb (15) 1.3 ppb (2) N/A 14.0 ppb (14) N/A N/A 12.0 ppb (12) N/A N/A 2.5 μg/m3 (11) 15.0
 
Jan. 21, 2021, 8 a.m. 16.4 ppb (16) 1.8 ppb (2) N/A 15.0 ppb (15) N/A N/A 12.0 ppb (12) N/A N/A 2.3 μg/m3 (10) 16.0
 
Jan. 21, 2021, 7 a.m. 15.2 ppb (15) 0.9 ppb (1) N/A 14.0 ppb (14) N/A N/A 12.0 ppb (12) N/A N/A 2.8 μg/m3 (12) 15.0
 
Jan. 21, 2021, 6 a.m. 23.1 ppb (22) 5.5 ppb (6) N/A 18.0 ppb (17) N/A N/A 8.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 22.0
 
Jan. 21, 2021, 5 a.m. 35.5 ppb (34) 13.8 ppb (14) N/A 22.0 ppb (21) N/A N/A 5.0 ppb (5) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2021, 4 a.m. 23.8 ppb (23) 7.4 ppb (7) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) N/A N/A 3.5 μg/m3 (15) 23.0
 
Jan. 21, 2021, 3 a.m. 34.7 ppb (33) 12.7 ppb (12) N/A 22.0 ppb (21) N/A N/A 7.0 ppb (7) N/A N/A 13.1 μg/m3 (54) 54.0
 
Jan. 21, 2021, 2 a.m. 20.2 ppb (20) 6.0 ppb (6) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) N/A N/A 6.3 μg/m3 (27) 27.0
 
Jan. 21, 2021, 1 a.m. 9.7 ppb (10) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 5.3 μg/m3 (23) 24.0
 
Jan. 21, 2021, midnight 7.0 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 2.9 μg/m3 (13) 28.0
 
Jan. 20, 2021, 11 p.m. 9.2 ppb (9) 4.6 ppb (5) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
Jan. 20, 2021, 10 p.m. 9.3 ppb (9) 5.0 ppb (5) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
Jan. 20, 2021, 9 p.m. 16.3 ppb (16) 11.2 ppb (11) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
Jan. 20, 2021, 8 p.m. 6.1 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 3.6 μg/m3 (16) 31.0
 
Jan. 20, 2021, 7 p.m. 5.5 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
Jan. 20, 2021, 6 p.m. 14.5 ppb (14) 7.8 ppb (8) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
Jan. 20, 2021, 5 p.m. 13.5 ppb (13) 5.8 ppb (6) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 3.3 μg/m3 (14) 24.0
 
Jan. 20, 2021, 4 p.m. 23.7 ppb (23) 13.2 ppb (13) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) N/A N/A 5.3 μg/m3 (23) 23.0
 
Jan. 20, 2021, 3 p.m. 55.5 ppb (53) 37.0 ppb (35) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (3) N/A N/A 10.4 μg/m3 (44) 53.0
 
Jan. 20, 2021, 2 p.m. 32.4 ppb (31) 12.3 ppb (12) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (4) N/A N/A 5.1 μg/m3 (22) 31.0
 
Jan. 20, 2021, 1 p.m. 41.2 ppb (39) 28.9 ppb (28) N/A 12.0 ppb (12) N/A N/A 5.0 ppb (5) N/A N/A 8.1 μg/m3 (34) 39.0
 
Jan. 20, 2021, noon 23.8 ppb (23) 7.3 ppb (7) N/A 17.0 ppb (17) N/A N/A 7.0 ppb (7) N/A N/A 3.5 μg/m3 (15) 23.0
 
Jan. 20, 2021, 11 a.m. 12.4 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) N/A N/A 1.8 μg/m3 (8) 17.0
 
Jan. 20, 2021, 10 a.m. 6.0 ppb (6) 0.4 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. 20, 2021, 9 a.m. 10.8 ppb (11) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) N/A N/A 1.8 μg/m3 (8) 14.0
 
Jan. 20, 2021, 8 a.m. 7.8 ppb (8) 0.6 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. 20, 2021, 7 a.m. 9.3 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) N/A N/A 2.8 μg/m3 (12) 18.0
 
Jan. 20, 2021, 6 a.m. 11.1 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) N/A N/A 3.8 μg/m3 (16) 16.0
 
Jan. 20, 2021, 5 a.m. 10.5 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) N/A N/A 2.7 μg/m3 (12) 21.0
 
Jan. 20, 2021, 4 a.m. 25.0 ppb (24) 3.7 ppb (4) N/A 22.0 ppb (21) N/A N/A 10.0 ppb (10) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 20, 2021, 3 a.m. 19.5 ppb (19) 2.4 ppb (3) N/A 17.0 ppb (17) N/A N/A 16.0 ppb (15) N/A N/A 4.3 μg/m3 (18) 19.0
 
Jan. 20, 2021, 2 a.m. 8.8 ppb (9) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
Jan. 20, 2021, 1 a.m. 3.3 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
Jan. 20, 2021, midnight 5.1 ppb (5) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
Jan. 19, 2021, 11 p.m. 3.3 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
Jan. 19, 2021, 10 p.m. 5.3 ppb (5) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
Jan. 19, 2021, 9 p.m. 8.1 ppb (8) 4.6 ppb (5) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 3.3 μg/m3 (14) 31.0
 
Jan. 19, 2021, 8 p.m. 5.6 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 3.9 μg/m3 (17) 30.0
 
Jan. 19, 2021, 7 p.m. 6.7 ppb (7) 3.2 ppb (4) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
Jan. 19, 2021, 6 p.m. 8.6 ppb (9) 4.4 ppb (5) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Jan. 19, 2021, 5 p.m. 12.9 ppb (13) 5.8 ppb (6) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) N/A N/A 5.1 μg/m3 (22) 22.0
 
Jan. 19, 2021, 4 p.m. 10.1 ppb (10) 3.6 ppb (4) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A 4.1 μg/m3 (18) 20.0
 
Jan. 19, 2021, 3 p.m. 14.4 ppb (14) 7.0 ppb (7) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 19, 2021, 2 p.m. 19.1 ppb (19) 10.5 ppb (10) N/A 9.0 ppb (9) N/A N/A 17.0 ppb (16) N/A N/A 2.6 μg/m3 (11) 19.0
 
Jan. 19, 2021, 1 p.m. 12.6 ppb (12) 6.0 ppb (6) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) N/A N/A 2.3 μg/m3 (10) 18.0
 
Jan. 19, 2021, noon 7.9 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
Jan. 19, 2021, 11 a.m. 12.3 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) N/A N/A 2.2 μg/m3 (10) 13.0
 
Jan. 19, 2021, 10 a.m. 10.4 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) N/A N/A 2.4 μg/m3 (10) 14.0
 
Jan. 19, 2021, 9 a.m. 6.6 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 2.0 μg/m3 (9) 15.0
 
Jan. 19, 2021, 8 a.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A N/A 1.3 μg/m3 (6) 21.0
 
Jan. 19, 2021, 7 a.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A N/A 1.1 μg/m3 (5) 20.0
 
Jan. 19, 2021, 6 a.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) N/A N/A 1.6 μg/m3 (7) 24.0
 
Jan. 19, 2021, 5 a.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 1.7 μg/m3 (8) 23.0
 
Jan. 19, 2021, 4 a.m. 4.7 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A N/A 2.2 μg/m3 (10) 25.0
 
Jan. 19, 2021, 3 a.m. 6.3 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) N/A N/A 5.1 μg/m3 (22) 25.0
 
Jan. 19, 2021, 2 a.m. 4.6 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 1.6 μg/m3 (7) 27.0
 
Jan. 19, 2021, 1 a.m. 5.8 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
Jan. 19, 2021, midnight 11.3 ppb (11) 6.2 ppb (6) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
Jan. 18, 2021, 11 p.m. 6.5 ppb (7) 3.4 ppb (4) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
Jan. 18, 2021, 10 p.m. 5.2 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 1.5 μg/m3 (7) 33.0
 
Jan. 18, 2021, 9 p.m. 3.2 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.0 μg/m3 (5) 33.0
 
Jan. 18, 2021, 8 p.m. 4.8 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 0.8 μg/m3 (4) 36.0
 
Jan. 18, 2021, 7 p.m. 5.9 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Jan. 18, 2021, 6 p.m. 7.4 ppb (7) 3.9 ppb (4) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
Jan. 18, 2021, 5 p.m. 7.7 ppb (8) 3.6 ppb (4) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A N/A 1.7 μg/m3 (8) 30.0
 
Jan. 18, 2021, 4 p.m. 7.3 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 1.4 μg/m3 (6) 27.0
 
Jan. 18, 2021, 3 p.m. 10.4 ppb (10) 4.4 ppb (5) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A 1.0 μg/m3 (5) 24.0
 
Jan. 18, 2021, 2 p.m. 12.1 ppb (12) 4.7 ppb (5) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 0.8 μg/m3 (4) 24.0
 
Jan. 18, 2021, 1 p.m. 9.1 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A 0.7 μg/m3 (3) 23.0
 
Jan. 18, 2021, noon 21.4 ppb (21) 8.8 ppb (9) N/A 13.0 ppb (13) N/A N/A 14.0 ppb (13) N/A N/A 1.0 μg/m3 (5) 21.0
 
Jan. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 1.6 μg/m3 (7) 11.0
 
Jan. 18, 2021, 10 a.m. 10.3 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) N/A N/A 2.1 μg/m3 (9) 16.0
 
Jan. 18, 2021, 9 a.m. 8.0 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) N/A N/A 1.3 μg/m3 (6) 17.0
 
Jan. 18, 2021, 8 a.m. 6.0 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 1.2 μg/m3 (5) 22.0
 
Jan. 18, 2021, 7 a.m. 4.1 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Jan. 18, 2021, 6 a.m. 6.4 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A 2.7 μg/m3 (12) 23.0
 
Jan. 18, 2021, 5 a.m. 6.4 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
Jan. 18, 2021, 4 a.m. 31.0 ppb (30) 9.3 ppb (9) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) N/A N/A 9.4 μg/m3 (40) 40.0
 
Jan. 18, 2021, 3 a.m. 24.9 ppb (24) 5.7 ppb (6) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (12) N/A N/A 5.8 μg/m3 (25) 25.0
 
Jan. 18, 2021, 2 a.m. 21.4 ppb (21) 5.8 ppb (6) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) N/A N/A 3.1 μg/m3 (13) 21.0
 
Jan. 18, 2021, 1 a.m. 20.7 ppb (20) 6.4 ppb (7) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) N/A N/A 9.9 μg/m3 (42) 42.0
 
Jan. 18, 2021, midnight 13.7 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 2.9 μg/m3 (13) 25.0
 
Jan. 17, 2021, 11 p.m. 10.6 ppb (10) 5.8 ppb (6) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
Jan. 17, 2021, 10 p.m. 5.6 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 0.7 μg/m3 (3) 36.0
 
Jan. 17, 2021, 9 p.m. 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
Jan. 17, 2021, 8 p.m. 3.0 ppb (3) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 0.9 μg/m3 (4) 36.0
 
Jan. 17, 2021, 7 p.m. 2.9 ppb (3) 1.5 ppb (2) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 0.8 μg/m3 (4) 35.0
 
Jan. 17, 2021, 6 p.m. 5.3 ppb (5) 2.6 ppb (3) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 1.5 μg/m3 (7) 33.0
 
Jan. 17, 2021, 5 p.m. 7.5 ppb (8) 3.6 ppb (4) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 1.8 μg/m3 (8) 27.0
 
Jan. 17, 2021, 4 p.m. 13.3 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) N/A N/A 2.0 μg/m3 (9) 22.0
 
Jan. 17, 2021, 3 p.m. 16.5 ppb (16) 7.6 ppb (8) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) N/A N/A 3.0 μg/m3 (13) 17.0
 
Jan. 17, 2021, 2 p.m. 14.2 ppb (14) 5.2 ppb (5) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) N/A N/A 2.3 μg/m3 (10) 14.0
 
Jan. 17, 2021, 1 p.m. 10.4 ppb (10) 2.4 ppb (3) N/A 8.0 ppb (8) N/A N/A 16.0 ppb (15) N/A N/A 2.9 μg/m3 (13) 15.0
 
Jan. 17, 2021, noon 12.1 ppb (12) 2.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) N/A N/A 1.0 μg/m3 (5) 13.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 1.4 μg/m3 (6) 15.0
 
Jan. 17, 2021, 10 a.m. 8.2 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (13) N/A N/A 2.5 μg/m3 (11) 13.0
 
Jan. 17, 2021, 9 a.m. 10.2 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 2.9 μg/m3 (13) 13.0
 
Jan. 17, 2021, 8 a.m. 7.7 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) N/A N/A 1.7 μg/m3 (8) 17.0
 
Jan. 17, 2021, 7 a.m. 20.6 ppb (20) 4.4 ppb (5) N/A 16.0 ppb (16) N/A N/A 10.0 ppb (10) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 17, 2021, 6 a.m. 20.1 ppb (19) 4.2 ppb (4) N/A 16.0 ppb (16) N/A N/A 10.0 ppb (10) N/A N/A 9.3 μg/m3 (39) 39.0
 
Jan. 17, 2021, 5 a.m. 28.9 ppb (28) 10.5 ppb (10) N/A 19.0 ppb (18) N/A N/A 8.0 ppb (8) N/A N/A 5.5 μg/m3 (23) 28.0
 
Jan. 17, 2021, 4 a.m. 34.4 ppb (33) 14.3 ppb (14) N/A 20.0 ppb (19) N/A N/A 6.0 ppb (6) N/A N/A 5.4 μg/m3 (23) 33.0
 
Jan. 17, 2021, 3 a.m. 13.9 ppb (14) 3.3 ppb (4) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2021, 2 a.m. 8.4 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) N/A N/A 4.2 μg/m3 (18) 25.0
 
Jan. 17, 2021, 1 a.m. 9.8 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 17, 2021, midnight 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
Jan. 16, 2021, 11 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 1.3 μg/m3 (6) 34.0
 
Jan. 16, 2021, 10 p.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
Jan. 16, 2021, 9 p.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 0.9 μg/m3 (4) 37.0
 
Jan. 16, 2021, 8 p.m. 2.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.8 μg/m3 (4) 38.0
 
Jan. 16, 2021, 7 p.m. 4.9 ppb (5) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
Jan. 16, 2021, 6 p.m. 6.2 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
Jan. 16, 2021, 5 p.m. 4.8 ppb (5) 2.6 ppb (3) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 1.3 μg/m3 (6) 32.0
 
Jan. 16, 2021, 4 p.m. 7.8 ppb (8) 3.9 ppb (4) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) N/A N/A 2.3 μg/m3 (10) 22.0
 
Jan. 16, 2021, 3 p.m. 26.1 ppb (25) 14.3 ppb (14) N/A 12.0 ppb (12) N/A N/A 13.0 ppb (13) N/A N/A 3.2 μg/m3 (14) 25.0
 
Jan. 16, 2021, 2 p.m. 30.1 ppb (29) 15.3 ppb (15) N/A 15.0 ppb (15) N/A N/A 8.0 ppb (8) N/A N/A 3.1 μg/m3 (13) 29.0
 
Jan. 16, 2021, 1 p.m. 13.4 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A 11.0 ppb (11) N/A N/A 1.9 μg/m3 (8) 13.0
 
Jan. 16, 2021, noon 15.4 ppb (15) 3.6 ppb (4) N/A 12.0 ppb (12) N/A N/A 10.0 ppb (10) N/A N/A 1.5 μg/m3 (7) 15.0
 
Jan. 16, 2021, 11 a.m. 9.3 ppb (9) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 9.0
 
Jan. 16, 2021, 10 a.m. 4.5 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) N/A N/A 2.0 μg/m3 (9) 19.0
 
Jan. 16, 2021, 9 a.m. 4.8 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) N/A N/A 2.1 μg/m3 (9) 16.0
 
Jan. 16, 2021, 8 a.m. 10.7 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A 7.0 ppb (7) N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, 7 a.m. 16.8 ppb (16) 3.0 ppb (3) N/A 14.0 ppb (14) N/A N/A 10.0 ppb (10) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 16, 2021, 6 a.m. 16.9 ppb (16) 2.2 ppb (3) N/A 15.0 ppb (15) N/A N/A 10.0 ppb (10) N/A N/A 7.3 μg/m3 (31) 31.0
 
Jan. 16, 2021, 5 a.m. 33.2 ppb (32) 10.5 ppb (10) N/A 23.0 ppb (22) N/A N/A 4.0 ppb (4) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 16, 2021, 4 a.m. 30.5 ppb (29) 7.6 ppb (8) N/A 23.0 ppb (22) N/A N/A 4.0 ppb (4) N/A N/A 9.2 μg/m3 (39) 39.0
 
Jan. 16, 2021, 3 a.m. 37.2 ppb (36) 15.3 ppb (15) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) N/A N/A 3.0 μg/m3 (13) 36.0
 
Jan. 16, 2021, 2 a.m. 38.0 ppb (36) 15.8 ppb (15) N/A 22.0 ppb (21) N/A N/A 9.0 ppb (9) N/A N/A 4.4 μg/m3 (19) 36.0
 
Jan. 16, 2021, 1 a.m. 44.2 ppb (42) 20.2 ppb (20) N/A 24.0 ppb (23) N/A N/A 8.0 ppb (8) N/A N/A 4.8 μg/m3 (20) 42.0
 
Jan. 16, 2021, midnight 28.7 ppb (28) 14.2 ppb (14) N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) N/A N/A 2.2 μg/m3 (10) 28.0
 
Jan. 15, 2021, 11 p.m. 6.5 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 0.8 μg/m3 (4) 32.0
 
Jan. 15, 2021, 10 p.m. 1.2 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 0.5 μg/m3 (3) 37.0
 
Jan. 15, 2021, 9 p.m. 3.1 ppb (3) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 0.8 μg/m3 (4) 36.0
 
Jan. 15, 2021, 8 p.m. 2.4 ppb (3) 1.2 ppb (2) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 0.7 μg/m3 (3) 34.0
 
Jan. 15, 2021, 7 p.m. 6.7 ppb (7) 5.1 ppb (5) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.0 μg/m3 (5) 33.0
 
Jan. 15, 2021, 6 p.m. 8.7 ppb (9) 5.2 ppb (5) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 1.3 μg/m3 (6) 29.0
 
Jan. 15, 2021, 5 p.m. 10.1 ppb (10) 5.8 ppb (6) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
Jan. 15, 2021, 4 p.m. 15.1 ppb (15) 7.0 ppb (7) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) N/A N/A 1.7 μg/m3 (8) 23.0
 
Jan. 15, 2021, 3 p.m. 27.1 ppb (26) 11.9 ppb (12) N/A 15.0 ppb (15) N/A N/A 16.0 ppb (15) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 15, 2021, 2 p.m. 16.7 ppb (16) 5.3 ppb (5) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) N/A N/A 2.0 μg/m3 (9) 16.0
 
Jan. 15, 2021, 1 p.m. 9.0 ppb (9) 4.3 ppb (5) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
Jan. 15, 2021, noon 5.1 ppb (5) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) N/A N/A 1.7 μg/m3 (8) 23.0
 
Jan. 15, 2021, 11 a.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A N/A 2.0 μg/m3 (9) 23.0
 
Jan. 15, 2021, 10 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A 0.7 μg/m3 (3) 27.0