ID: 1155

AQSQID: 100032004

Site Name: Mlk

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

Updated: Feb. 27, 2021, 11:32 p.m.

Location: Wilmington (Justison Landing), DE

Reporting: True, Located: True

Current AQI: 41.0

Wilmington (Justison Landing) DE, US: 39.7394, -75.5581

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 27, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.24 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.23 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 35.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.2 ppb (3) N/A 5.3 μg/m3 (23) 38.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.2 ppb (3) N/A 4.2 μg/m3 (18) 38.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) 0.23 ppb (3) N/A 6.9 μg/m3 (29) 35.0
 
Feb. 27, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.36 ppb (5) N/A 12.7 μg/m3 (53) 53.0
 
Feb. 27, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.37 ppb (5) N/A 8.7 μg/m3 (37) 37.0
 
Feb. 27, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.32 ppb (4) N/A 5.5 μg/m3 (23) 23.0
 
Feb. 27, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.24 ppb (3) N/A 4.6 μg/m3 (20) 27.0
 
Feb. 27, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.2 ppb (3) N/A 5.1 μg/m3 (22) 30.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) N/A 5.7 μg/m3 (24) 32.0
 
Feb. 27, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) N/A 5.7 μg/m3 (24) 33.0
 
Feb. 27, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) N/A 7.1 μg/m3 (30) 32.0
 
Feb. 27, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) N/A 5.4 μg/m3 (23) 36.0
 
Feb. 27, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.19 ppb (3) N/A 5.1 μg/m3 (22) 37.0
 
Feb. 27, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) N/A 5.3 μg/m3 (23) 36.0
 
Feb. 27, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) N/A 4.8 μg/m3 (20) 36.0
 
Feb. 27, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.19 ppb (3) N/A 4.9 μg/m3 (21) 35.0
 
Feb. 27, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.17 ppb (3) N/A 4.4 μg/m3 (19) 38.0
 
Feb. 27, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) N/A 4.5 μg/m3 (19) 36.0
 
Feb. 27, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) N/A 4.4 μg/m3 (19) 36.0
 
Feb. 27, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) N/A 5.0 μg/m3 (21) 34.0
 
Feb. 26, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.18 ppb (3) N/A 4.5 μg/m3 (19) 35.0
 
Feb. 26, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 38.0
 
Feb. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.17 ppb (3) N/A 3.9 μg/m3 (17) 38.0
 
Feb. 26, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.17 ppb (3) N/A 5.8 μg/m3 (25) 38.0
 
Feb. 26, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) 0.17 ppb (3) N/A 6.4 μg/m3 (27) 38.0
 
Feb. 26, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) 0.17 ppb (3) N/A 6.8 μg/m3 (29) 35.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) 0.16 ppb (3) N/A 5.9 μg/m3 (25) 38.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) 0.18 ppb (3) N/A 5.8 μg/m3 (25) 37.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) 0.19 ppb (3) N/A 6.3 μg/m3 (27) 34.0
 
Feb. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) 0.22 ppb (3) N/A 7.5 μg/m3 (32) 33.0
 
Feb. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.27 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
Feb. 26, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) 0.34 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
Feb. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 19.0 ppb (18) 0.29 ppb (4) N/A 8.9 μg/m3 (38) 38.0
 
Feb. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) 0.26 ppb (4) N/A 10.1 μg/m3 (43) 43.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) 0.28 ppb (4) N/A 10.4 μg/m3 (44) 44.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) 0.27 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) 0.33 ppb (4) N/A 12.8 μg/m3 (53) 53.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) 0.32 ppb (4) N/A 13.1 μg/m3 (54) 54.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.46 ppb (6) N/A 16.2 μg/m3 (60) 60.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.56 ppb (7) N/A 15.2 μg/m3 (58) 58.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) 0.86 ppb (11) N/A 13.5 μg/m3 (54) 54.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.72 ppb (8) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 26, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) 0.37 ppb (5) N/A 8.7 μg/m3 (37) 37.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 36.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.2 ppb (3) N/A 6.5 μg/m3 (28) 40.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.2 ppb (3) N/A 5.9 μg/m3 (25) 39.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.18 ppb (3) N/A 6.3 μg/m3 (27) 40.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.17 ppb (3) N/A 6.4 μg/m3 (27) 39.0
 
Feb. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) N/A 6.2 μg/m3 (26) 40.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.16 ppb (3) N/A 5.4 μg/m3 (23) 38.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.17 ppb (3) N/A 4.5 μg/m3 (19) 37.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) N/A 3.8 μg/m3 (16) 34.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) N/A 3.6 μg/m3 (16) 31.0
 
Feb. 25, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) N/A 4.3 μg/m3 (18) 28.0
 
Feb. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.18 ppb (3) N/A 6.1 μg/m3 (26) 31.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.16 ppb (3) N/A 8.4 μg/m3 (36) 36.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.16 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.16 ppb (3) N/A 8.5 μg/m3 (36) 40.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) 0.17 ppb (3) N/A 6.2 μg/m3 (26) 38.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.21 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.23 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Feb. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.24 ppb (3) N/A 6.8 μg/m3 (29) 29.0
 
Feb. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) 0.36 ppb (5) N/A 7.9 μg/m3 (33) 33.0
 
Feb. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.23 ppb (3) N/A 6.3 μg/m3 (27) 27.0
 
Feb. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 7.0 ppb (10) 31.0 ppb (29) 0.2 ppb (3) N/A 6.2 μg/m3 (26) 29.0
 
Feb. 25, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 5.5 μg/m3 (23) 35.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.2 ppb (3) N/A 4.3 μg/m3 (18) 38.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) 0.2 ppb (3) N/A 3.9 μg/m3 (17) 41.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) 0.17 ppb (3) N/A 3.6 μg/m3 (16) 43.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) 0.16 ppb (3) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) 0.17 ppb (3) N/A 5.7 μg/m3 (24) 42.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) 0.16 ppb (3) N/A 5.6 μg/m3 (24) 42.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) 0.17 ppb (3) N/A 5.1 μg/m3 (22) 40.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) 0.19 ppb (3) N/A N/A 36.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) 0.29 ppb (4) N/A 10.8 μg/m3 (46) 46.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) 0.43 ppb (5) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) 0.73 ppb (8) N/A 15.1 μg/m3 (58) 58.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.61 ppb (7) N/A 11.7 μg/m3 (49) 49.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) 0.61 ppb (7) N/A 12.8 μg/m3 (53) 53.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) 0.55 ppb (7) N/A 16.6 μg/m3 (61) 61.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 0.0 ppb (0) 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.35 ppb (4) N/A 11.2 μg/m3 (47) 47.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.37 ppb (5) N/A 10.8 μg/m3 (46) 46.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 1.0 ppb (1) 0.4 ppb (5) N/A 11.4 μg/m3 (48) 48.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) 0.37 ppb (5) N/A 10.3 μg/m3 (43) 43.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.26 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) N/A 6.5 μg/m3 (28) 32.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) 0.24 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) 0.19 ppb (3) N/A 6.8 μg/m3 (29) 34.0
 
Feb. 24, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) N/A 7.1 μg/m3 (30) 34.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.19 ppb (3) N/A 6.5 μg/m3 (28) 37.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.18 ppb (3) N/A 6.4 μg/m3 (27) 38.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.18 ppb (3) N/A 6.4 μg/m3 (27) 41.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.18 ppb (3) N/A 6.8 μg/m3 (29) 42.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.2 ppb (3) N/A 7.1 μg/m3 (30) 38.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) N/A 7.5 μg/m3 (32) 34.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.21 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) 0.23 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) 0.24 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.29 ppb (4) N/A 13.6 μg/m3 (55) 55.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) 0.43 ppb (5) N/A 15.2 μg/m3 (58) 58.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (8) 0.39 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (13) 0.29 ppb (4) N/A 12.3 μg/m3 (52) 52.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.37 ppb (5) N/A 11.7 μg/m3 (49) 49.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.21 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) N/A 11.6 μg/m3 (49) 49.0
 
Feb. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.24 ppb (3) N/A 13.6 μg/m3 (55) 55.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 10.0 ppb (10) 0.25 ppb (3) N/A 17.2 μg/m3 (62) 62.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (4) 0.31 ppb (4) N/A 21.3 μg/m3 (71) 71.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) 0.34 ppb (4) N/A 22.1 μg/m3 (73) 73.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 6.0 ppb (6) 0.34 ppb (4) N/A 21.9 μg/m3 (72) 72.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (11) 0.31 ppb (4) N/A 20.2 μg/m3 (69) 69.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.27 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Feb. 23, 2021, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.3 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.28 ppb (4) N/A 11.3 μg/m3 (48) 48.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.31 ppb (4) N/A 13.3 μg/m3 (54) 54.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) 0.27 ppb (4) N/A 12.8 μg/m3 (53) 53.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.24 ppb (3) N/A 12.5 μg/m3 (52) 52.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.28 ppb (4) N/A 13.6 μg/m3 (55) 55.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.28 ppb (4) N/A 14.9 μg/m3 (57) 57.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) 0.21 ppb (3) N/A 12.3 μg/m3 (52) 52.0
 
Feb. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 10.2 μg/m3 (43) 43.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 11.8 μg/m3 (50) 50.0
 
Feb. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 12.5 μg/m3 (52) 52.0
 
Feb. 22, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
Feb. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 13.2 μg/m3 (54) 54.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Feb. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 13.8 μg/m3 (55) 55.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Feb. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.3 ppb (4) N/A 17.2 μg/m3 (62) 62.0
 
Feb. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.42 ppb (5) N/A 20.7 μg/m3 (70) 70.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.52 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.51 ppb (6) N/A 24.1 μg/m3 (77) 77.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.47 ppb (6) N/A 22.2 μg/m3 (73) 73.0
 
Feb. 22, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.31 ppb (4) N/A 20.3 μg/m3 (69) 69.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.27 ppb (4) N/A 17.5 μg/m3 (63) 63.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.21 ppb (3) N/A 15.7 μg/m3 (59) 59.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 16.4 μg/m3 (61) 61.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 17.3 μg/m3 (62) 62.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.19 ppb (3) N/A 17.5 μg/m3 (63) 63.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 15.7 μg/m3 (59) 59.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (3) N/A 16.5 μg/m3 (61) 61.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (3) N/A 18.4 μg/m3 (65) 65.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) 0.21 ppb (3) N/A 20.9 μg/m3 (70) 70.0
 
Feb. 21, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) 0.24 ppb (3) N/A 22.0 μg/m3 (72) 72.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) 0.23 ppb (3) N/A 22.6 μg/m3 (74) 74.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) 0.22 ppb (3) N/A 24.5 μg/m3 (78) 78.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) 0.21 ppb (3) N/A 26.3 μg/m3 (81) 81.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 26.7 μg/m3 (82) 82.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.2 ppb (3) N/A 25.6 μg/m3 (80) 80.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.2 ppb (3) N/A 25.5 μg/m3 (80) 80.0
 
Feb. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.21 ppb (3) N/A 24.9 μg/m3 (78) 78.0
 
Feb. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 23.5 μg/m3 (75) 75.0
 
Feb. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) 0.2 ppb (3) N/A 21.4 μg/m3 (71) 71.0
 
Feb. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 21.5 μg/m3 (71) 71.0
 
Feb. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) 0.19 ppb (3) N/A 21.6 μg/m3 (71) 71.0
 
Feb. 21, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) 0.21 ppb (3) N/A 23.3 μg/m3 (75) 75.0
 
Feb. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) 0.21 ppb (3) N/A 22.8 μg/m3 (74) 74.0