ID: 1954

AQSQID: 516500008

Site Name: Hampton

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

Updated: April 10, 2021, 5:43 p.m.

Location: Hampton (Langley Air Force Base), VA

Reporting: True, Located: True

Current AQI: 48.0

Hampton (Langley Air Force Base) VA, US: 37.103683, -76.386948

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 10, 2021, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) N/A 6.9 μg/m3 (29) 48.0
 
April 10, 2021, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 44.0
 
April 10, 2021, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 48.0 ppb (45) 0.2 ppb (3) N/A 3.9 μg/m3 (17) 45.0
 
April 10, 2021, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 48.0 ppb (45) 0.2 ppb (3) N/A -0.1 μg/m3 (0) 45.0
 
April 10, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 0.8 μg/m3 (4) 39.0
 
April 10, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.2 ppb (3) N/A 6.1 μg/m3 (26) 26.0
 
April 10, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 25.0 ppb (24) 0.2 ppb (3) N/A 7.3 μg/m3 (31) 31.0
 
April 10, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
April 10, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.2 ppb (3) N/A 7.7 μg/m3 (33) 33.0
 
April 10, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 8.1 μg/m3 (34) 34.0
 
April 10, 2021, 6 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 10.1 μg/m3 (43) 43.0
 
April 10, 2021, 5 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
April 10, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 6.2 μg/m3 (26) 38.0
 
April 10, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.2 ppb (3) N/A 8.1 μg/m3 (34) 43.0
 
April 10, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
April 10, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 42.0
 
April 10, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 39.0 ppb (37) 0.2 ppb (3) N/A 2.2 μg/m3 (10) 37.0
 
April 9, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 39.0 ppb (37) 0.2 ppb (3) N/A -0.3 μg/m3 (0) 37.0
 
April 9, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 4.4 μg/m3 (19) 34.0
 
April 9, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 5.3 μg/m3 (23) 34.0
 
April 9, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 35.0
 
April 9, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 2.9 μg/m3 (13) 39.0
 
April 9, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 3.6 μg/m3 (16) 40.0
 
April 9, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 4.9 μg/m3 (21) 38.0
 
April 9, 2021, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 0.9 μg/m3 (4) 38.0
 
April 9, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 5.1 μg/m3 (22) 36.0
 
April 9, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 3.3 μg/m3 (14) 34.0
 
April 9, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 1.8 μg/m3 (8) 34.0
 
April 9, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A 1.4 μg/m3 (6) 32.0
 
April 9, 2021, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) 0.2 ppb (3) N/A 2.1 μg/m3 (9) 31.0
 
April 9, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 3.6 μg/m3 (16) 34.0
 
April 9, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A 3.6 μg/m3 (16) 32.0
 
April 9, 2021, 8 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 30.0 ppb (28) 0.2 ppb (3) N/A 0.6 μg/m3 (3) 28.0
 
April 9, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A -0.5 μg/m3 (0) 32.0
 
April 9, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A -1.3 μg/m3 (0) 35.0
 
April 9, 2021, 5 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 -0.2 μg/m3 (0) 35.0
 
April 9, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A -0.4 μg/m3 (0) 36.0
 
April 9, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A -1.4 μg/m3 (0) 36.0
 
April 9, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A -0.4 μg/m3 (0) 36.0
 
April 9, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 0.0 μg/m3 (0) 35.0
 
April 9, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 2.4 μg/m3 (10) 35.0
 
April 8, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 5.4 μg/m3 (23) 36.0
 
April 8, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) 0.1 ppb (2) N/A 3.4 μg/m3 (15) 36.0
 
April 8, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) 0.1 ppb (2) N/A 2.9 μg/m3 (13) 37.0
 
April 8, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 37.0
 
April 8, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) 0.2 ppb (3) N/A 2.6 μg/m3 (11) 38.0
 
April 8, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 4.7 μg/m3 (20) 38.0
 
April 8, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 4.6 μg/m3 (20) 38.0
 
April 8, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 5.2 μg/m3 (22) 40.0
 
April 8, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 5.9 μg/m3 (25) 40.0
 
April 8, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A 1.9 μg/m3 (8) 42.0
 
April 8, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A -1.4 μg/m3 (0) 42.0
 
April 8, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) 0.2 ppb (3) N/A 1.8 μg/m3 (8) 41.0
 
April 8, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 4.5 μg/m3 (19) 40.0
 
April 8, 2021, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 42.0
 
April 8, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 10.4 μg/m3 (44) 44.0
 
April 8, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) 0.2 ppb (3) N/A 7.7 μg/m3 (33) 46.0
 
April 8, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 6.8 μg/m3 (29) 44.0
 
April 8, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) 0.2 ppb (3) N/A 5.5 μg/m3 (23) 43.0
 
April 8, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) N/A 2.6 μg/m3 (11) 49.0
 
April 8, 2021, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 53.0 ppb (50) 0.2 ppb (3) N/A 3.8 μg/m3 (16) 50.0
 
April 8, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) N/A 10.6 μg/m3 (45) 49.0
 
April 8, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 54.0 ppb (50) 0.2 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
April 8, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 57.0 ppb (58) 0.2 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
April 8, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 62.0 ppb (74) 0.2 ppb (3) N/A 12.5 μg/m3 (52) 74.0
 
April 7, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 65.0 ppb (84) 0.2 ppb (3) N/A 13.7 μg/m3 (55) 84.0
 
April 7, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 66.0 ppb (87) 0.2 ppb (3) N/A 13.0 μg/m3 (53) 87.0
 
April 7, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 68.0 ppb (94) 0.2 ppb (3) N/A 15.4 μg/m3 (58) 94.0
 
April 7, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 66.0 ppb (87) 0.2 ppb (3) N/A 16.0 μg/m3 (60) 87.0
 
April 7, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 71.0 ppb (101) 0.2 ppb (3) N/A 16.2 μg/m3 (60) 101.0
 
April 7, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 71.0 ppb (101) 0.2 ppb (3) N/A 13.6 μg/m3 (55) 101.0
 
April 7, 2021, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 67.0 ppb (91) 0.2 ppb (3) N/A 13.5 μg/m3 (54) 91.0
 
April 7, 2021, 4 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 61.0 ppb (71) 0.2 ppb (3) N/A 13.2 μg/m3 (54) 71.0
 
April 7, 2021, 3 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 60.0 ppb (68) 0.2 ppb (3) N/A 9.9 μg/m3 (42) 68.0
 
April 7, 2021, 2 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 54.0 ppb (50) 0.2 ppb (3) N/A 7.6 μg/m3 (32) 50.0
 
April 7, 2021, 1 p.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (2) 44.0 ppb (41) 0.3 ppb (4) N/A 5.0 μg/m3 (21) 41.0
 
April 7, 2021, noon N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) 22.0 ppb (21) 0.3 ppb (4) N/A 5.2 μg/m3 (22) 22.0
 
April 7, 2021, 11 a.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 11.0 ppb (11) 0.3 ppb (4) N/A 6.8 μg/m3 (29) 29.0
 
April 7, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 11.0 ppb (11) 0.2 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
April 7, 2021, 9 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 7.3 μg/m3 (31) 31.0
 
April 7, 2021, 8 a.m. N/A N/A N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) 0.2 ppb (3) N/A 6.8 μg/m3 (29) 29.0
 
April 7, 2021, 7 a.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 6.1 μg/m3 (26) 26.0
 
April 7, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
April 7, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 28.0
 
April 7, 2021, 4 a.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 32.0
 
April 7, 2021, 3 a.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 33.0 ppb (31) 0.2 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
April 7, 2021, 2 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 30.0 ppb (28) 0.2 ppb (3) N/A 12.2 μg/m3 (52) 52.0
 
April 7, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A 13.6 μg/m3 (55) 55.0
 
April 7, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 40.0 ppb (38) 0.2 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
April 6, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 8.9 μg/m3 (38) 44.0
 
April 6, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 7.9 μg/m3 (33) 47.0
 
April 6, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) N/A 7.3 μg/m3 (31) 49.0
 
April 6, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) N/A 5.9 μg/m3 (25) 48.0
 
April 6, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) N/A 6.1 μg/m3 (26) 48.0
 
April 6, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 53.0 ppb (50) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 50.0
 
April 6, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 49.0
 
April 6, 2021, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 6.6 μg/m3 (28) 47.0
 
April 6, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) 0.2 ppb (3) N/A 6.1 μg/m3 (26) 46.0
 
April 6, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 49.0 ppb (46) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 46.0
 
April 6, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 10.1 μg/m3 (43) 43.0
 
April 6, 2021, noon N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
April 6, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 14.9 μg/m3 (57) 57.0
 
April 6, 2021, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 13.6 μg/m3 (55) 55.0
 
April 6, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A 12.1 μg/m3 (51) 51.0
 
April 6, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 46.0 ppb (43) 0.2 ppb (3) N/A 11.6 μg/m3 (49) 49.0
 
April 6, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
April 6, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
April 6, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) 0.3 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
April 6, 2021, 4 a.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 24.0 ppb (23) 0.4 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
April 6, 2021, 3 a.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 23.0 ppb (22) 0.4 ppb (5) N/A 12.4 μg/m3 (52) 52.0
 
April 6, 2021, 2 a.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 25.0 ppb (24) 0.4 ppb (5) N/A 14.3 μg/m3 (56) 56.0
 
April 6, 2021, 1 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 31.0 ppb (29) 0.4 ppb (5) N/A 13.2 μg/m3 (54) 54.0
 
April 6, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
April 5, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 56.0 ppb (55) 0.2 ppb (3) N/A 10.7 μg/m3 (45) 55.0
 
April 5, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 59.0 ppb (65) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 65.0
 
April 5, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 60.0 ppb (68) 0.2 ppb (3) N/A 8.4 μg/m3 (36) 68.0
 
April 5, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 57.0 ppb (58) 0.2 ppb (3) N/A 7.3 μg/m3 (31) 58.0
 
April 5, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 55.0 ppb (51) 0.2 ppb (3) N/A 6.4 μg/m3 (27) 51.0
 
April 5, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 55.0 ppb (51) 0.2 ppb (3) N/A 7.8 μg/m3 (33) 51.0
 
April 5, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) 0.2 ppb (3) N/A 5.5 μg/m3 (23) 50.0
 
April 5, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 52.0 ppb (49) 0.2 ppb (3) N/A 7.8 μg/m3 (33) 49.0
 
April 5, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 6.3 μg/m3 (27) 47.0
 
April 5, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 47.0
 
April 5, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) 0.2 ppb (3) N/A 6.8 μg/m3 (29) 46.0
 
April 5, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) 0.2 ppb (3) N/A 10.1 μg/m3 (43) 43.0
 
April 5, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
April 5, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
April 5, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 13.2 μg/m3 (54) 54.0
 
April 5, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 45.0 ppb (42) 0.2 ppb (3) N/A 15.5 μg/m3 (59) 59.0
 
April 5, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 48.0 ppb (45) 0.2 ppb (3) N/A 16.4 μg/m3 (61) 61.0
 
April 5, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 17.7 μg/m3 (63) 63.0
 
April 5, 2021, 5 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 23.0 ppb (22) 0.3 ppb (4) N/A 14.2 μg/m3 (56) 56.0
 
April 5, 2021, 4 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 17.0 ppb (16) 0.4 ppb (5) N/A 11.2 μg/m3 (47) 47.0
 
April 5, 2021, 3 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 24.0 ppb (23) 0.3 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
April 5, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 31.0 ppb (29) 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 16.8 μg/m3 (61) 61.0
 
April 5, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) N/A 15.4 μg/m3 (58) 58.0
 
April 4, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) 0.2 ppb (3) N/A 14.3 μg/m3 (56) 56.0
 
April 4, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 56.0 ppb (55) 0.2 ppb (3) N/A 12.3 μg/m3 (52) 55.0
 
April 4, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) 0.2 ppb (3) N/A 7.8 μg/m3 (33) 58.0
 
April 4, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) 0.2 ppb (3) N/A 6.1 μg/m3 (26) 58.0
 
April 4, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) 0.2 ppb (3) N/A 5.5 μg/m3 (23) 58.0
 
April 4, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) 0.2 ppb (3) N/A 3.5 μg/m3 (15) 51.0
 
April 4, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) 0.2 ppb (3) N/A 4.3 μg/m3 (18) 48.0
 
April 4, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.2 ppb (3) N/A 1.3 μg/m3 (6) 43.0
 
April 4, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 2.1 μg/m3 (9) 38.0
 
April 4, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 2.4 μg/m3 (10) 35.0
 
April 4, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 4.3 μg/m3 (18) 34.0
 
April 4, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 5.7 μg/m3 (24) 34.0
 
April 4, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 8.7 μg/m3 (37) 37.0
 
April 4, 2021, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) 0.2 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
April 4, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) N/A 0.2 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
April 4, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.2 ppb (3) N/A 7.5 μg/m3 (32) 36.0
 
April 4, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 10.8 μg/m3 (46) 46.0
 
April 4, 2021, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) 0.3 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
April 4, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) 0.4 ppb (5) N/A 8.9 μg/m3 (38) 38.0
 
April 4, 2021, 4 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (2) 10.0 ppb (10) 0.5 ppb (6) N/A 5.6 μg/m3 (24) 24.0
 
April 4, 2021, 3 a.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 14.0 ppb (13) 0.5 ppb (6) N/A 5.2 μg/m3 (22) 22.0
 
April 4, 2021, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (2) 15.0 ppb (14) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
April 4, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 28.0 ppb (26) 0.3 ppb (4) N/A 6.8 μg/m3 (29) 29.0
 
April 4, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 35.0 ppb (33) 0.2 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
April 3, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 6.9 μg/m3 (29) 40.0
 
April 3, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 3.1 μg/m3 (13) 44.0
 
April 3, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) 0.1 ppb (2) N/A 1.9 μg/m3 (8) 44.0
 
April 3, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) 0.1 ppb (2) N/A 1.1 μg/m3 (5) 44.0
 
April 3, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.1 ppb (2) N/A -0.6 μg/m3 (0) 43.0
 
April 3, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.1 ppb (2) N/A -2.1 μg/m3 (0) 43.0
 
April 3, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) 0.1 ppb (2) N/A -0.2 μg/m3 (0) 41.0