ID: 2954

AQSQID: 490210005

Site Name: Enoch

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

Updated: Sept. 28, 2021, 7:02 p.m.

Location: Cedar City (3860 N), UT

Reporting: True, Located: True

Current AQI: 53.0

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
Sept. 21, 2021, 5 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 1.9 μg/m3 (8) 38.0
 
Sept. 21, 2021, 4 p.m. 3.2 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
Sept. 21, 2021, 3 p.m. 10.6 ppb (10) 3.7 ppb (4) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) N/A N/A 3.2 μg/m3 (14) 28.0
 
Sept. 21, 2021, 2 p.m. 39.5 ppb (38) 20.5 ppb (20) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (13) N/A N/A 7.2 μg/m3 (31) 38.0
 
Sept. 21, 2021, 1 p.m. 47.5 ppb (45) 25.4 ppb (24) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) N/A N/A 9.5 μg/m3 (40) 45.0
 
Sept. 21, 2021, noon 46.9 ppb (45) 26.0 ppb (25) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) N/A N/A 4.5 μg/m3 (19) 45.0
 
Sept. 21, 2021, 11 a.m. 22.2 ppb (21) 4.9 ppb (5) N/A 17.0 ppb (17) N/A N/A 11.0 ppb (11) N/A N/A 7.5 μg/m3 (32) 32.0
 
Sept. 21, 2021, 10 a.m. 8.1 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) N/A N/A 3.3 μg/m3 (14) 17.0
 
Sept. 21, 2021, 9 a.m. 0.6 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A N/A 1.6 μg/m3 (7) 24.0
 
Sept. 21, 2021, 8 a.m. 0.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
Sept. 21, 2021, 7 a.m. 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
Sept. 21, 2021, 6 a.m. 1.7 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A N/A 1.3 μg/m3 (6) 28.0
 
Sept. 21, 2021, 5 a.m. 1.5 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
Sept. 21, 2021, 4 a.m. 1.5 ppb (2) -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
Sept. 21, 2021, 3 a.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
Sept. 21, 2021, 2 a.m. 1.7 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
Sept. 21, 2021, 1 a.m. 5.0 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.4 μg/m3 (10) 37.0
 
Sept. 21, 2021, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 4.5 μg/m3 (19) 38.0
 
Sept. 20, 2021, 11 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 3.4 μg/m3 (15) 41.0
 
Sept. 20, 2021, 10 p.m. 3.7 ppb (4) 2.3 ppb (3) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 3.3 μg/m3 (14) 40.0
 
Sept. 20, 2021, 9 p.m. -0.1 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 1.6 μg/m3 (7) 40.0
 
Sept. 20, 2021, 8 p.m. 0.6 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 1.4 μg/m3 (6) 39.0
 
Sept. 20, 2021, 7 p.m. 0.5 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
Sept. 20, 2021, 6 p.m. 1.9 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
Sept. 20, 2021, 5 p.m. 4.1 ppb (4) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
Sept. 20, 2021, 4 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 2.5 μg/m3 (11) 34.0
 
Sept. 20, 2021, 3 p.m. 4.4 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 3.1 μg/m3 (13) 29.0
 
Sept. 20, 2021, 2 p.m. 5.6 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A N/A 3.2 μg/m3 (14) 23.0
 
Sept. 20, 2021, 1 p.m. 6.0 ppb (6) 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 3.4 μg/m3 (15) 22.0
 
Sept. 20, 2021, noon 9.1 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 3.2 μg/m3 (14) 19.0
 
Sept. 20, 2021, 10 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
Sept. 20, 2021, 9 a.m. 0.5 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A N/A 2.8 μg/m3 (12) 26.0
 
Sept. 20, 2021, 8 a.m. 0.7 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
Sept. 20, 2021, 7 a.m. 0.5 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
Sept. 20, 2021, 6 a.m. 0.3 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A N/A 7.2 μg/m3 (31) 31.0
 
Sept. 20, 2021, 5 a.m. 0.0 ppb (0) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 20, 2021, 4 a.m. 1.4 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 4.6 μg/m3 (20) 33.0
 
Sept. 20, 2021, 3 a.m. 5.1 ppb (5) -0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) N/A N/A 2.9 μg/m3 (13) 36.0
 
Sept. 20, 2021, 2 a.m. 7.6 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
Sept. 20, 2021, 1 a.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 2.6 μg/m3 (11) 40.0
 
Sept. 20, 2021, midnight 0.0 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A N/A 2.9 μg/m3 (13) 43.0
 
Sept. 19, 2021, 11 p.m. -0.1 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 3.6 μg/m3 (16) 44.0
 
Sept. 19, 2021, 10 p.m. -0.1 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 3.7 μg/m3 (16) 44.0
 
Sept. 19, 2021, 9 p.m. 0.1 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 4.6 μg/m3 (20) 42.0
 
Sept. 19, 2021, 8 p.m. 0.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 5.3 μg/m3 (23) 40.0
 
Sept. 19, 2021, 7 p.m. 0.0 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 5.6 μg/m3 (24) 40.0
 
Sept. 19, 2021, 6 p.m. 0.0 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
Sept. 19, 2021, 5 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 5.8 μg/m3 (25) 38.0
 
Sept. 19, 2021, 4 p.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.8 μg/m3 (25) 30.0
 
Sept. 19, 2021, 3 p.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 5.9 μg/m3 (25) 27.0
 
Sept. 19, 2021, 2 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2021, 1 p.m. 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A 5.5 μg/m3 (23) 26.0
 
Sept. 19, 2021, noon 0.2 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 5.2 μg/m3 (22) 29.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 5.2 μg/m3 (22) 30.0
 
Sept. 19, 2021, 10 a.m. 0.9 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 5.1 μg/m3 (22) 31.0
 
Sept. 19, 2021, 9 a.m. 0.4 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 5.6 μg/m3 (24) 31.0
 
Sept. 19, 2021, 8 a.m. 0.6 ppb (1) -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 5.7 μg/m3 (24) 31.0
 
Sept. 19, 2021, 7 a.m. 0.4 ppb (1) -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.8 μg/m3 (25) 30.0
 
Sept. 19, 2021, 6 a.m. 2.1 ppb (2) -0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2021, 5 a.m. 2.5 ppb (3) -0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Sept. 19, 2021, 4 a.m. 3.0 ppb (3) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 5.6 μg/m3 (24) 27.0
 
Sept. 19, 2021, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 6.8 μg/m3 (29) 29.0
 
Sept. 19, 2021, 2 a.m. 4.0 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 6.1 μg/m3 (26) 29.0
 
Sept. 19, 2021, 1 a.m. 2.1 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 5.6 μg/m3 (24) 32.0
 
Sept. 19, 2021, midnight 1.5 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 4.9 μg/m3 (21) 34.0
 
Sept. 18, 2021, 11 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 18, 2021, 10 p.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 3.7 μg/m3 (16) 33.0
 
Sept. 18, 2021, 9 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
Sept. 18, 2021, 8 p.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 3.4 μg/m3 (15) 32.0
 
Sept. 18, 2021, 7 p.m. 4.1 ppb (4) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
Sept. 18, 2021, 6 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 18, 2021, 5 p.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 4 p.m. 2.6 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 18, 2021, 3 p.m. 7.8 ppb (8) 3.3 ppb (4) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 8.4 μg/m3 (36) 36.0
 
Sept. 18, 2021, 2 p.m. 8.1 ppb (8) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 9.7 μg/m3 (41) 41.0
 
Sept. 18, 2021, 1 p.m. 7.5 ppb (8) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2021, noon 3.4 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 18, 2021, 11 a.m. 5.0 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 18, 2021, 10 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 10.8 μg/m3 (46) 46.0
 
Sept. 18, 2021, 9 a.m. 4.2 ppb (4) -0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A 10.2 μg/m3 (43) 43.0
 
Sept. 18, 2021, 8 a.m. 4.6 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 9.2 μg/m3 (39) 39.0
 
Sept. 18, 2021, 7 a.m. 5.7 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2021, 6 a.m. 10.0 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) N/A N/A 8.5 μg/m3 (36) 36.0
 
Sept. 18, 2021, 5 a.m. 10.5 ppb (10) 2.2 ppb (3) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 18, 2021, 4 a.m. 12.3 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2021, 3 a.m. 20.5 ppb (20) 4.6 ppb (5) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) N/A N/A 8.2 μg/m3 (35) 35.0
 
Sept. 18, 2021, 2 a.m. 26.4 ppb (25) 9.6 ppb (10) N/A 17.0 ppb (17) N/A N/A 20.0 ppb (19) N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 18, 2021, 1 a.m. 6.3 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 7.1 μg/m3 (30) 34.0
 
Sept. 18, 2021, midnight 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 6.1 μg/m3 (26) 39.0
 
Sept. 17, 2021, 11 p.m. 0.2 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 4.4 μg/m3 (19) 42.0
 
Sept. 17, 2021, 10 p.m. 0.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 4.3 μg/m3 (18) 41.0
 
Sept. 17, 2021, 9 p.m. 0.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 4.6 μg/m3 (20) 41.0
 
Sept. 17, 2021, 8 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 3.9 μg/m3 (17) 42.0
 
Sept. 17, 2021, 7 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 3.8 μg/m3 (16) 42.0
 
Sept. 17, 2021, 6 p.m. 1.3 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 4.2 μg/m3 (18) 42.0
 
Sept. 17, 2021, 5 p.m. 2.3 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A N/A 5.6 μg/m3 (24) 45.0
 
Sept. 17, 2021, 4 p.m. 8.5 ppb (9) 3.2 ppb (4) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) N/A N/A 6.2 μg/m3 (26) 38.0
 
Sept. 17, 2021, 3 p.m. 20.2 ppb (20) 8.9 ppb (9) N/A 11.0 ppb (11) N/A N/A 27.0 ppb (25) N/A N/A 8.5 μg/m3 (36) 36.0
 
Sept. 17, 2021, 2 p.m. 34.9 ppb (33) 14.7 ppb (14) N/A 20.0 ppb (19) N/A N/A 19.0 ppb (18) N/A N/A 11.1 μg/m3 (47) 47.0
 
Sept. 17, 2021, 1 p.m. 45.6 ppb (44) 19.6 ppb (19) N/A 26.0 ppb (25) N/A N/A 14.0 ppb (13) N/A N/A 9.7 μg/m3 (41) 44.0
 
Sept. 17, 2021, noon 24.9 ppb (24) 9.2 ppb (9) N/A 16.0 ppb (16) N/A N/A 21.0 ppb (20) N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2021, 11 a.m. 15.4 ppb (15) 3.6 ppb (4) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) N/A N/A 7.7 μg/m3 (33) 33.0
 
Sept. 17, 2021, 10 a.m. 14.0 ppb (14) 3.9 ppb (4) N/A 10.0 ppb (10) N/A N/A 18.0 ppb (17) N/A N/A 7.5 μg/m3 (32) 32.0
 
Sept. 17, 2021, 9 a.m. 4.1 ppb (4) -0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A 3.9 μg/m3 (17) 23.0
 
Sept. 17, 2021, 8 a.m. 4.4 ppb (5) -0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
Sept. 17, 2021, 7 a.m. 1.3 ppb (2) -0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) N/A N/A 4.1 μg/m3 (18) 24.0
 
Sept. 17, 2021, 6 a.m. 2.0 ppb (2) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
Sept. 17, 2021, 5 a.m. 1.8 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 3.0 μg/m3 (13) 36.0
 
Sept. 17, 2021, 4 a.m. 3.6 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 3.7 μg/m3 (16) 34.0
 
Sept. 17, 2021, 3 a.m. 12.1 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) N/A N/A 4.1 μg/m3 (18) 28.0
 
Sept. 17, 2021, 2 a.m. 14.8 ppb (14) 2.5 ppb (3) N/A 12.0 ppb (12) N/A N/A 28.0 ppb (26) N/A N/A 5.2 μg/m3 (22) 26.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.8 μg/m3 (16) 38.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.4 μg/m3 (15) 15.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.4 μg/m3 (15) 15.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 16, 2021, 9 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 3.3 μg/m3 (14) 46.0
 
Sept. 16, 2021, 8 p.m. 1.4 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
Sept. 16, 2021, 7 p.m. 0.5 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) N/A N/A 4.6 μg/m3 (20) 49.0
 
Sept. 16, 2021, 6 p.m. 0.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) N/A N/A 5.7 μg/m3 (24) 49.0
 
Sept. 16, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 6.4 μg/m3 (27) 45.0
 
Sept. 16, 2021, 4 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 8.6 μg/m3 (36) 41.0
 
Sept. 16, 2021, 3 p.m. 19.8 ppb (19) 8.3 ppb (8) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 16, 2021, 2 p.m. 50.7 ppb (48) 24.7 ppb (24) N/A 26.0 ppb (25) N/A N/A 11.0 ppb (11) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 16, 2021, 1 p.m. 50.9 ppb (49) 21.4 ppb (21) N/A 30.0 ppb (29) N/A N/A 10.0 ppb (10) N/A N/A 11.8 μg/m3 (50) 50.0
 
Sept. 16, 2021, noon 70.8 ppb (69) 38.0 ppb (36) N/A 36.0 ppb (34) N/A N/A 9.0 ppb (9) N/A N/A 12.2 μg/m3 (52) 69.0
 
Sept. 16, 2021, 11 a.m. 28.5 ppb (27) 7.7 ppb (8) N/A 21.0 ppb (20) N/A N/A 11.0 ppb (11) N/A N/A 11.3 μg/m3 (48) 48.0
 
Sept. 16, 2021, 10 a.m. 14.9 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 10.6 μg/m3 (45) 45.0
 
Sept. 16, 2021, 9 a.m. 2.2 ppb (3) -0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 9.2 μg/m3 (39) 39.0
 
Sept. 16, 2021, 8 a.m. 1.0 ppb (1) -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 8.9 μg/m3 (38) 38.0
 
Sept. 16, 2021, 7 a.m. 4.0 ppb (4) -0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) N/A N/A 7.9 μg/m3 (33) 44.0
 
Sept. 16, 2021, 6 a.m. 2.9 ppb (3) -0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) N/A N/A 8.5 μg/m3 (36) 44.0
 
Sept. 16, 2021, 5 a.m. 4.1 ppb (4) -0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) N/A N/A 8.9 μg/m3 (38) 42.0
 
Sept. 16, 2021, 4 a.m. 8.4 ppb (8) -0.2 ppb (0) N/A 9.0 ppb (9) N/A N/A 37.0 ppb (35) N/A N/A 9.4 μg/m3 (40) 40.0
 
Sept. 16, 2021, 3 a.m. 5.3 ppb (5) -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) N/A N/A 9.9 μg/m3 (42) 42.0
 
Sept. 16, 2021, 2 a.m. 3.2 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 16, 2021, 1 a.m. 1.4 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A N/A 9.5 μg/m3 (40) 42.0
 
Sept. 16, 2021, midnight 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 9.3 μg/m3 (39) 45.0
 
Sept. 15, 2021, 11 p.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 7.6 μg/m3 (32) 46.0
 
Sept. 15, 2021, 10 p.m. 1.6 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 7.5 μg/m3 (32) 46.0
 
Sept. 15, 2021, 9 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 8.6 μg/m3 (36) 46.0
 
Sept. 15, 2021, 8 p.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 8.6 μg/m3 (36) 45.0
 
Sept. 15, 2021, 7 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 7.9 μg/m3 (33) 46.0
 
Sept. 15, 2021, 6 p.m. 0.0 ppb (0) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A N/A 8.8 μg/m3 (37) 48.0
 
Sept. 15, 2021, 5 p.m. 7.4 ppb (7) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 15, 2021, 4 p.m. 14.0 ppb (14) 6.2 ppb (6) N/A 8.0 ppb (8) N/A N/A 30.0 ppb (28) N/A N/A 9.4 μg/m3 (40) 40.0
 
Sept. 15, 2021, 3 p.m. 20.5 ppb (20) 9.1 ppb (9) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) N/A N/A 7.7 μg/m3 (33) 33.0
 
Sept. 15, 2021, 2 p.m. 46.8 ppb (45) 24.3 ppb (23) N/A 23.0 ppb (22) N/A N/A 11.0 ppb (11) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 15, 2021, 1 p.m. 51.8 ppb (49) 28.2 ppb (27) N/A 24.0 ppb (23) N/A N/A 8.0 ppb (8) N/A N/A 10.7 μg/m3 (45) 49.0
 
Sept. 15, 2021, noon 15.8 ppb (15) 5.5 ppb (6) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2021, 11 a.m. 19.2 ppb (19) 4.9 ppb (5) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 15, 2021, 10 a.m. 13.8 ppb (14) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) N/A N/A 5.6 μg/m3 (24) 24.0
 
Sept. 15, 2021, 9 a.m. 7.5 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 15, 2021, 8 a.m. 7.6 ppb (8) -0.3 ppb (0) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A 4.1 μg/m3 (18) 20.0
 
Sept. 15, 2021, 7 a.m. 13.6 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 15, 2021, 6 a.m. 7.7 ppb (8) -0.2 ppb (0) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 15, 2021, 5 a.m. 14.7 ppb (14) 1.9 ppb (2) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) N/A N/A 6.8 μg/m3 (29) 29.0
 
Sept. 15, 2021, 4 a.m. 17.0 ppb (17) 2.7 ppb (3) N/A 14.0 ppb (14) N/A N/A 20.0 ppb (19) N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 15, 2021, 3 a.m. 11.2 ppb (11) -0.3 ppb (0) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) N/A N/A 6.2 μg/m3 (26) 27.0
 
Sept. 15, 2021, 2 a.m. 13.5 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 26.0 ppb (25) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 15, 2021, 1 a.m. 13.7 ppb (13) 2.5 ppb (3) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) N/A N/A 5.7 μg/m3 (24) 30.0
 
Sept. 15, 2021, midnight 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 3.2 μg/m3 (14) 40.0
 
Sept. 14, 2021, 11 p.m. 0.0 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 2.7 μg/m3 (12) 45.0
 
Sept. 14, 2021, 10 p.m. 1.4 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 3.3 μg/m3 (14) 46.0
 
Sept. 14, 2021, 9 p.m. 5.7 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 3.0 μg/m3 (13) 44.0
 
Sept. 14, 2021, 8 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 2.7 μg/m3 (12) 45.0
 
Sept. 14, 2021, 7 p.m. 0.0 ppb (0) -0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 3.1 μg/m3 (13) 45.0
 
Sept. 14, 2021, 6 p.m. 0.1 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A N/A 3.2 μg/m3 (14) 44.0