ID: 462

AQSQID: 240053001

Site Name: Essex

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

Updated: Sept. 21, 2021, 5:05 p.m.

Location: Essex (N Woodward Dr), MD

Reporting: True, Located: True

Current AQI: 25.0

Essex (N Woodward Dr) MD, US: 39.310833, -76.474444

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 3 p.m. N/A 0.4 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A N/A 27.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 21, 2021, 2 p.m. N/A 0.5 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 21, 2021, 1 p.m. N/A 2.3 ppb (3) 6.8 ppb (7) 5.0 ppb (5) N/A N/A 18.0 ppb (17) 0.1 ppb (2) N/A N/A 17.0
 
Sept. 21, 2021, noon N/A 3.1 ppb (3) 10.1 ppb (10) 8.0 ppb (8) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A N/A 13.0
 
Sept. 21, 2021, 11 a.m. N/A 1.5 ppb (2) 10.1 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 10.0 ppb (10) 0.2 ppb (3) N/A N/A 10.0
 
Sept. 21, 2021, 10 a.m. N/A 0.3 ppb (1) 8.6 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 11.0 ppb (11) 0.1 ppb (2) N/A N/A 11.0
 
Sept. 21, 2021, 9 a.m. N/A 0.1 ppb (1) 7.7 ppb (8) N/A N/A 0.0 ppb (0) 11.0 ppb (11) 0.1 ppb (2) N/A N/A 11.0
 
Sept. 21, 2021, 8 a.m. N/A 0.1 ppb (1) 6.1 ppb (6) 7.0 ppb (7) N/A N/A 13.0 ppb (13) 0.1 ppb (2) N/A N/A 13.0
 
Sept. 21, 2021, 7 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A N/A 14.0
 
Sept. 21, 2021, 6 a.m. N/A 0.1 ppb (1) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) N/A N/A 18.0
 
Sept. 21, 2021, 5 a.m. N/A 0.1 ppb (1) 4.2 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) N/A N/A 20.0
 
Sept. 21, 2021, 4 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 21, 2021, 3 a.m. N/A 0.1 ppb (1) 2.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.1 ppb (2) N/A N/A 24.0
 
Sept. 21, 2021, 2 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A N/A 26.0
 
Sept. 21, 2021, 1 a.m. N/A 0.2 ppb (1) 2.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A N/A 26.0
 
Sept. 21, 2021, midnight N/A 0.0 ppb (0) 1.7 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) N/A N/A 29.0
 
Sept. 20, 2021, 11 p.m. N/A 0.1 ppb (1) 1.9 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) N/A N/A 29.0
 
Sept. 20, 2021, 10 p.m. N/A 0.2 ppb (1) 2.2 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A N/A 31.0
 
Sept. 20, 2021, 9 p.m. N/A 0.3 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A N/A 32.0
 
Sept. 20, 2021, 8 p.m. N/A 0.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.1 ppb (2) N/A N/A 34.0
 
Sept. 20, 2021, 7 p.m. N/A 0.6 ppb (1) 3.2 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A N/A 36.0
 
Sept. 20, 2021, 6 p.m. N/A 0.2 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 20, 2021, 5 p.m. N/A 0.1 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A N/A 37.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.1 ppb (2) N/A N/A 34.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A N/A 32.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A N/A 31.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) N/A N/A 21.0
 
Sept. 20, 2021, noon N/A 5.9 ppb (6) 17.8 ppb (17) 12.0 ppb (12) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A N/A 17.0
 
Sept. 20, 2021, 11 a.m. N/A 7.5 ppb (8) 24.8 ppb (24) 17.0 ppb (17) N/A 0.0 ppb (0) 4.0 ppb (4) 0.3 ppb (4) N/A N/A 24.0
 
Sept. 20, 2021, 10 a.m. N/A 0.9 ppb (1) 16.4 ppb (16) 15.0 ppb (15) N/A 0.0 ppb (0) 5.0 ppb (5) 0.2 ppb (3) N/A N/A 16.0
 
Sept. 20, 2021, 9 a.m. N/A 0.9 ppb (1) 15.6 ppb (15) 15.0 ppb (15) N/A N/A 5.0 ppb (5) 0.2 ppb (3) N/A N/A 15.0
 
Sept. 20, 2021, 8 a.m. N/A 0.2 ppb (1) 14.6 ppb (14) 14.0 ppb (14) N/A 0.0 ppb (0) 6.0 ppb (6) 0.2 ppb (3) N/A N/A 14.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 10.0 ppb (10) 0.2 ppb (3) N/A N/A 11.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A N/A 13.0
 
Sept. 20, 2021, 5 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) N/A N/A 28.0
 
Sept. 20, 2021, 4 a.m. N/A 0.0 ppb (0) 4.4 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) N/A N/A 30.0
 
Sept. 20, 2021, 3 a.m. N/A 0.0 ppb (0) 9.6 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (21) 0.3 ppb (4) N/A N/A 21.0
 
Sept. 20, 2021, 2 a.m. N/A 0.1 ppb (1) 15.2 ppb (15) 16.0 ppb (16) N/A 0.0 ppb (0) 10.0 ppb (10) 0.4 ppb (5) N/A N/A 16.0
 
Sept. 20, 2021, 1 a.m. N/A 0.2 ppb (1) 14.2 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 14.0 ppb (13) 0.4 ppb (5) N/A N/A 15.0
 
Sept. 20, 2021, midnight N/A 0.2 ppb (1) 10.8 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) N/A N/A 21.0
 
Sept. 19, 2021, 11 p.m. N/A 0.2 ppb (1) 4.7 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.2 ppb (3) N/A N/A 33.0
 
Sept. 19, 2021, 10 p.m. N/A 0.1 ppb (1) 2.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 19, 2021, 9 p.m. N/A 0.1 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A N/A 40.0
 
Sept. 19, 2021, 8 p.m. N/A 0.1 ppb (1) 1.7 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A N/A 40.0
 
Sept. 19, 2021, 7 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A N/A 40.0
 
Sept. 19, 2021, 6 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A N/A 39.0
 
Sept. 19, 2021, 5 p.m. N/A 0.3 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A N/A 39.0
 
Sept. 19, 2021, 4 p.m. N/A 0.3 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 19, 2021, 3 p.m. N/A 0.2 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A N/A 36.0
 
Sept. 19, 2021, 2 p.m. N/A 0.3 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.1 ppb (2) N/A N/A 34.0
 
Sept. 19, 2021, 1 p.m. N/A 0.3 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) N/A N/A 30.0
 
Sept. 19, 2021, noon N/A 0.5 ppb (1) 4.3 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) N/A N/A 27.0
 
Sept. 19, 2021, 11 a.m. N/A 0.2 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) N/A N/A 24.0
 
Sept. 19, 2021, 10 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A N/A 26.0
 
Sept. 19, 2021, 9 a.m. N/A 0.0 ppb (0) 4.6 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) N/A N/A 21.0
 
Sept. 19, 2021, 8 a.m. N/A 0.0 ppb (0) 5.9 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 12.0 ppb (12) 0.2 ppb (3) N/A N/A 12.0
 
Sept. 19, 2021, 7 a.m. N/A 0.2 ppb (1) 9.8 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) 0.3 ppb (4) N/A N/A 10.0
 
Sept. 19, 2021, 6 a.m. N/A 0.3 ppb (1) 10.6 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 8.0 ppb (8) 0.4 ppb (5) N/A N/A 11.0
 
Sept. 19, 2021, 5 a.m. N/A 0.5 ppb (1) 14.7 ppb (14) 14.0 ppb (14) N/A 0.0 ppb (0) 7.0 ppb (7) 0.5 ppb (6) N/A N/A 14.0
 
Sept. 19, 2021, 4 a.m. N/A 1.8 ppb (2) 23.9 ppb (23) 20.0 ppb (19) N/A 0.0 ppb (0) 1.0 ppb (1) 0.7 ppb (8) N/A N/A 23.0
 
Sept. 19, 2021, 3 a.m. N/A 0.9 ppb (1) 23.6 ppb (23) 21.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (3) 0.8 ppb (10) N/A N/A 23.0
 
Sept. 19, 2021, 2 a.m. N/A 0.2 ppb (1) 21.4 ppb (21) 19.0 ppb (18) N/A 0.0 ppb (0) 8.0 ppb (8) 0.8 ppb (10) N/A N/A 21.0
 
Sept. 19, 2021, 1 a.m. N/A 0.2 ppb (1) 16.9 ppb (16) 15.0 ppb (15) N/A 0.0 ppb (0) 19.0 ppb (18) 0.7 ppb (8) N/A N/A 18.0
 
Sept. 19, 2021, midnight N/A 0.3 ppb (1) 17.2 ppb (17) 15.0 ppb (15) N/A 0.0 ppb (0) 28.0 ppb (26) 0.5 ppb (6) N/A N/A 26.0
 
Sept. 18, 2021, 11 p.m. N/A 0.5 ppb (1) 11.5 ppb (11) 10.0 ppb (10) N/A 1.0 ppb (2) 45.0 ppb (42) 0.6 ppb (7) N/A N/A 42.0
 
Sept. 18, 2021, 10 p.m. N/A 0.2 ppb (1) 9.0 ppb (9) 7.0 ppb (7) N/A 1.0 ppb (2) 56.0 ppb (55) 0.3 ppb (4) N/A N/A 55.0
 
Sept. 18, 2021, 9 p.m. N/A 0.2 ppb (1) 10.0 ppb (10) 7.0 ppb (7) N/A 1.0 ppb (2) 57.0 ppb (58) 0.4 ppb (5) N/A N/A 58.0
 
Sept. 18, 2021, 8 p.m. N/A 0.8 ppb (1) 9.7 ppb (10) 7.0 ppb (7) N/A 1.0 ppb (2) 56.0 ppb (55) 0.3 ppb (4) N/A N/A 55.0
 
Sept. 18, 2021, 7 p.m. N/A 0.6 ppb (1) 9.4 ppb (9) 6.0 ppb (6) N/A 1.0 ppb (2) 55.0 ppb (51) 0.3 ppb (4) N/A N/A 51.0
 
Sept. 18, 2021, 6 p.m. N/A 1.0 ppb (1) 10.8 ppb (11) 7.0 ppb (7) N/A 0.0 ppb (0) 53.0 ppb (50) 0.3 ppb (4) N/A N/A 50.0
 
Sept. 18, 2021, 5 p.m. N/A 1.6 ppb (2) 10.9 ppb (11) 7.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) N/A N/A 41.0
 
Sept. 18, 2021, 4 p.m. N/A 1.7 ppb (2) 10.3 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (32) 0.3 ppb (4) N/A N/A 32.0
 
Sept. 18, 2021, 3 p.m. N/A 1.1 ppb (2) 9.5 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) N/A N/A 28.0
 
Sept. 18, 2021, 2 p.m. N/A 1.0 ppb (1) 9.6 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) 0.3 ppb (4) N/A N/A 21.0
 
Sept. 18, 2021, 1 p.m. N/A 1.4 ppb (2) 9.8 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (17) 0.2 ppb (3) N/A N/A 17.0
 
Sept. 18, 2021, noon N/A 0.5 ppb (1) 7.0 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.2 ppb (3) N/A N/A 17.0
 
Sept. 18, 2021, 11 a.m. N/A 0.3 ppb (1) 7.3 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) 0.2 ppb (3) N/A N/A 13.0
 
Sept. 18, 2021, 10 a.m. N/A 0.1 ppb (1) 8.0 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (12) 0.2 ppb (3) N/A N/A 12.0
 
Sept. 18, 2021, 9 a.m. N/A 0.1 ppb (1) 9.0 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 7.0 ppb (7) 0.2 ppb (3) N/A N/A 9.0
 
Sept. 18, 2021, 8 a.m. N/A 0.0 ppb (0) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (11) 0.2 ppb (3) N/A N/A 11.0
 
Sept. 18, 2021, 7 a.m. N/A 0.0 ppb (0) 6.3 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (15) 0.2 ppb (3) N/A N/A 15.0
 
Sept. 18, 2021, 6 a.m. N/A 0.1 ppb (1) 9.9 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A N/A 13.0
 
Sept. 18, 2021, 5 a.m. N/A 0.0 ppb (0) 10.6 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A N/A 13.0
 
Sept. 18, 2021, 4 a.m. N/A 0.1 ppb (1) 10.7 ppb (11) 11.0 ppb (11) N/A 0.0 ppb (0) 15.0 ppb (14) 0.2 ppb (3) N/A N/A 14.0
 
Sept. 18, 2021, 3 a.m. N/A 0.0 ppb (0) 7.7 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) N/A N/A 21.0
 
Sept. 18, 2021, 2 a.m. N/A 0.1 ppb (1) 7.7 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) N/A N/A 24.0
 
Sept. 18, 2021, 1 a.m. N/A 0.0 ppb (0) 6.8 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) N/A N/A 27.0
 
Sept. 18, 2021, midnight N/A 0.0 ppb (0) 6.3 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) N/A N/A 29.0
 
Sept. 17, 2021, 11 p.m. N/A 0.0 ppb (0) 4.3 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A N/A 33.0
 
Sept. 17, 2021, 10 p.m. N/A 0.1 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A N/A 35.0
 
Sept. 17, 2021, 9 p.m. N/A 0.1 ppb (1) 2.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A N/A 36.0
 
Sept. 17, 2021, 8 p.m. N/A 0.2 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 17, 2021, 7 p.m. N/A 0.2 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 17, 2021, 6 p.m. N/A 0.2 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 17, 2021, 5 p.m. N/A 0.3 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A N/A 35.0
 
Sept. 17, 2021, 4 p.m. N/A 0.5 ppb (1) 3.7 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.1 ppb (2) N/A N/A 4.0
 
Sept. 17, 2021, 3 p.m. N/A 0.4 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 17, 2021, 2 p.m. N/A 0.8 ppb (1) 4.5 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) N/A N/A 20.0
 
Sept. 17, 2021, 1 p.m. N/A 0.6 ppb (1) 4.6 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) N/A N/A 18.0
 
Sept. 17, 2021, noon N/A 0.6 ppb (1) 6.2 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) 0.1 ppb (2) N/A N/A 15.0
 
Sept. 17, 2021, 11 a.m. N/A 0.5 ppb (1) 7.6 ppb (8) 7.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (14) 0.1 ppb (2) N/A N/A 14.0
 
Sept. 17, 2021, 10 a.m. N/A 0.1 ppb (1) 6.6 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) N/A N/A 17.0
 
Sept. 17, 2021, 9 a.m. N/A 0.1 ppb (1) 3.8 ppb (4) 4.0 ppb (4) N/A N/A 21.0 ppb (20) 0.1 ppb (2) N/A N/A 20.0
 
Sept. 17, 2021, 8 a.m. N/A 0.1 ppb (1) 3.5 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) N/A N/A 23.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) N/A N/A 23.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.1 ppb (2) N/A N/A 24.0
 
Sept. 17, 2021, 5 a.m. N/A 0.0 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 17, 2021, 4 a.m. N/A 0.0 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 17, 2021, 3 a.m. N/A 0.1 ppb (1) 3.7 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A N/A 28.0
 
Sept. 17, 2021, 2 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) N/A N/A 27.0
 
Sept. 17, 2021, 1 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A N/A 28.0
 
Sept. 17, 2021, midnight N/A 0.0 ppb (0) 3.2 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A N/A 26.0
 
Sept. 16, 2021, 11 p.m. N/A 0.1 ppb (1) 3.5 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A N/A 31.0
 
Sept. 16, 2021, 10 p.m. N/A 0.1 ppb (1) 2.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A N/A 37.0
 
Sept. 16, 2021, 9 p.m. N/A 0.1 ppb (1) 2.6 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A N/A 39.0
 
Sept. 16, 2021, 8 p.m. N/A 0.1 ppb (1) 4.7 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (48) 0.2 ppb (3) N/A N/A 48.0
 
Sept. 16, 2021, 7 p.m. N/A 0.2 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (48) 0.1 ppb (2) N/A N/A 48.0
 
Sept. 16, 2021, 6 p.m. N/A 0.2 ppb (1) 3.8 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A N/A 44.0
 
Sept. 16, 2021, 5 p.m. N/A 0.2 ppb (1) 3.5 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A N/A 42.0
 
Sept. 16, 2021, 4 p.m. N/A 0.4 ppb (1) 4.5 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A N/A 39.0
 
Sept. 16, 2021, 3 p.m. N/A 0.7 ppb (1) 5.3 ppb (5) 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.1 ppb (2) N/A N/A 36.0
 
Sept. 16, 2021, 2 p.m. N/A 1.6 ppb (2) 7.0 ppb (7) 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.1 ppb (2) N/A N/A 27.0
 
Sept. 16, 2021, 1 p.m. N/A 1.4 ppb (2) 6.7 ppb (7) 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.1 ppb (2) N/A N/A 22.0
 
Sept. 16, 2021, noon N/A 0.9 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) 0.1 ppb (2) N/A N/A 19.0
 
Sept. 16, 2021, 11 a.m. N/A 0.4 ppb (1) 6.7 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (17) 0.2 ppb (3) N/A N/A 17.0
 
Sept. 16, 2021, 10 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) N/A N/A 18.0
 
Sept. 16, 2021, 9 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.1 ppb (2) N/A N/A 18.0
 
Sept. 16, 2021, 8 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) N/A N/A 21.0
 
Sept. 16, 2021, 7 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) N/A N/A 25.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A N/A 28.0
 
Sept. 16, 2021, 5 a.m. N/A 0.0 ppb (0) 4.6 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) N/A N/A 30.0
 
Sept. 16, 2021, 4 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A N/A 32.0
 
Sept. 16, 2021, 3 a.m. N/A 0.0 ppb (0) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A N/A 37.0
 
Sept. 16, 2021, 2 a.m. N/A 0.4 ppb (1) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 16, 2021, 1 a.m. N/A 0.2 ppb (1) 3.2 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) N/A N/A 27.0
 
Sept. 16, 2021, midnight N/A 0.2 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A N/A 33.0
 
Sept. 15, 2021, 11 p.m. N/A 0.3 ppb (1) 5.8 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A N/A 38.0
 
Sept. 15, 2021, 10 p.m. N/A 0.8 ppb (1) 4.8 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) N/A N/A 42.0
 
Sept. 15, 2021, 9 p.m. N/A 0.4 ppb (1) 4.8 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) N/A N/A 42.0
 
Sept. 15, 2021, 8 p.m. N/A 0.8 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) N/A N/A 42.0
 
Sept. 15, 2021, 7 p.m. N/A 0.6 ppb (1) 6.2 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 53.0 ppb (50) 0.2 ppb (3) N/A N/A 50.0
 
Sept. 15, 2021, 6 p.m. N/A 0.6 ppb (1) 4.6 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (46) 0.2 ppb (3) N/A N/A 46.0
 
Sept. 15, 2021, 5 p.m. N/A 0.8 ppb (1) 5.3 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (46) 0.1 ppb (2) N/A N/A 46.0
 
Sept. 15, 2021, 4 p.m. N/A 0.8 ppb (1) 4.9 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (43) 0.2 ppb (3) N/A N/A 43.0
 
Sept. 15, 2021, 3 p.m. N/A 0.9 ppb (1) 6.8 ppb (7) 4.0 ppb (4) N/A 2.0 ppb (3) 47.0 ppb (44) 0.3 ppb (4) N/A N/A 44.0
 
Sept. 15, 2021, 2 p.m. N/A 1.8 ppb (2) 10.4 ppb (10) 8.0 ppb (8) N/A 3.0 ppb (5) 38.0 ppb (36) 0.2 ppb (3) N/A N/A 36.0
 
Sept. 15, 2021, 1 p.m. N/A 1.7 ppb (2) 9.4 ppb (9) 7.0 ppb (7) N/A 1.0 ppb (2) 31.0 ppb (29) 0.2 ppb (3) N/A N/A 29.0
 
Sept. 15, 2021, noon N/A 2.0 ppb (2) 11.5 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (24) 0.3 ppb (4) N/A N/A 24.0
 
Sept. 15, 2021, 11 a.m. N/A 1.5 ppb (2) 12.3 ppb (12) 11.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (20) 0.3 ppb (4) N/A N/A 20.0
 
Sept. 15, 2021, 10 a.m. N/A 0.8 ppb (1) 9.3 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.3 ppb (4) N/A N/A 21.0
 
Sept. 15, 2021, 9 a.m. N/A 0.4 ppb (1) 6.6 ppb (7) 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.2 ppb (3) N/A N/A 24.0
 
Sept. 15, 2021, 8 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) N/A N/A 27.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 27.0 ppb (25) 0.2 ppb (3) N/A N/A 25.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 29.0 ppb (27) 0.2 ppb (3) N/A N/A 27.0
 
Sept. 15, 2021, 5 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.2 ppb (3) N/A N/A 33.0
 
Sept. 15, 2021, 4 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (38) 0.2 ppb (3) N/A N/A 38.0
 
Sept. 15, 2021, 3 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (41) 0.2 ppb (3) N/A N/A 41.0
 
Sept. 15, 2021, 2 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 58.0 ppb (61) 0.2 ppb (3) N/A N/A 61.0
 
Sept. 15, 2021, 1 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 56.0 ppb (55) 0.2 ppb (3) N/A N/A 55.0
 
Sept. 15, 2021, midnight N/A 0.2 ppb (1) 7.2 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 50.0 ppb (47) 0.2 ppb (3) N/A N/A 47.0
 
Sept. 14, 2021, 11 p.m. N/A 0.3 ppb (1) 6.1 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (44) 0.2 ppb (3) N/A N/A 44.0
 
Sept. 14, 2021, 10 p.m. N/A 0.3 ppb (1) 5.7 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) N/A N/A 45.0
 
Sept. 14, 2021, 9 p.m. N/A 0.2 ppb (1) 4.2 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A N/A 47.0
 
Sept. 14, 2021, 8 p.m. N/A 0.4 ppb (1) 4.7 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (47) 0.2 ppb (3) N/A N/A 47.0
 
Sept. 14, 2021, 7 p.m. N/A 0.4 ppb (1) 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 55.0 ppb (51) 0.2 ppb (3) N/A N/A 51.0
 
Sept. 14, 2021, 6 p.m. N/A 0.4 ppb (1) 5.1 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (55) 0.2 ppb (3) N/A N/A 55.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (51) 0.2 ppb (3) N/A N/A 51.0
 
Sept. 14, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (55) 0.2 ppb (3) N/A N/A 55.0