AQSQID: 516500008

Site Name: Hampton

Location: Hampton (Langley Air Force Base), VA

Reporting: True, Located: True

Current AQI: 32.0

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 8, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.01 ppb (0) N/A 7.7 μg/m3 (32) 32.0
 
April 8, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.01 ppb (0) N/A 4.1 μg/m3 (17) 26.0
 
April 8, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.02 ppb (0) N/A 3.2 μg/m3 (13) 24.0
 
April 8, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.05 ppb (1) N/A 2.2 μg/m3 (9) 18.0
 
April 8, 2020, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (18) 0.06 ppb (1) N/A -0.1 μg/m3 (0) 18.0
 
April 8, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (20) 0.05 ppb (1) N/A 4.1 μg/m3 (17) 20.0
 
April 8, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.01 ppb (0) N/A 11.6 μg/m3 (48) 48.0
 
April 7, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 18.3 μg/m3 (63) 63.0
 
April 7, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 10.1 μg/m3 (42) 42.0
 
April 7, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 5.9 μg/m3 (25) 33.0
 
April 7, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 6.3 μg/m3 (26) 32.0
 
April 7, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 5.5 μg/m3 (23) 32.0
 
April 7, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 3.9 μg/m3 (16) 33.0
 
April 7, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 7, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 47.0 ppb (36) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 7, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 11.9 μg/m3 (50) 50.0
 
April 7, 2020, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 35.0 ppb (27) 0.02 ppb (0) N/A 9.5 μg/m3 (40) 40.0
 
April 7, 2020, 1 p.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 27.0 ppb (21) 0.08 ppb (1) N/A 3.3 μg/m3 (14) 21.0
 
April 7, 2020, noon N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (12) 0.13 ppb (1) N/A 5.9 μg/m3 (25) 25.0
 
April 7, 2020, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (11) 0.09 ppb (1) N/A 8.8 μg/m3 (37) 37.0
 
April 7, 2020, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.04 ppb (0) N/A 11.3 μg/m3 (47) 47.0
 
April 7, 2020, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 6.0 ppb (5) 0.06 ppb (1) N/A 11.7 μg/m3 (49) 49.0
 
April 7, 2020, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (5) 0.07 ppb (1) N/A 10.6 μg/m3 (44) 44.0
 
April 7, 2020, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) 0.07 ppb (1) N/A 9.7 μg/m3 (40) 40.0
 
April 7, 2020, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 14.0 ppb (11) 0.07 ppb (1) N/A 12.1 μg/m3 (50) 50.0
 
April 7, 2020, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (8) 0.07 ppb (1) N/A 12.3 μg/m3 (51) 51.0
 
April 7, 2020, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) 0.04 ppb (0) N/A 11.4 μg/m3 (48) 48.0
 
April 7, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.02 ppb (0) N/A 11.4 μg/m3 (48) 48.0
 
April 7, 2020, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.01 ppb (0) N/A 11.9 μg/m3 (50) 50.0
 
April 7, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.01 ppb (0) N/A 13.6 μg/m3 (53) 53.0
 
April 7, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.01 ppb (0) N/A 12.1 μg/m3 (50) 50.0
 
April 6, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 9.0 μg/m3 (38) 38.0
 
April 6, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 10.4 μg/m3 (43) 43.0
 
April 6, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 10.6 μg/m3 (44) 44.0
 
April 6, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 11.3 μg/m3 (47) 47.0
 
April 6, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) 0.0 ppb (0) N/A 8.8 μg/m3 (37) 37.0
 
April 6, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) 0.01 ppb (0) N/A 7.4 μg/m3 (31) 34.0
 
April 6, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.0 ppb (0) N/A 7.8 μg/m3 (32) 32.0
 
April 6, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 5.9 μg/m3 (25) 29.0
 
April 6, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 4.1 μg/m3 (17) 25.0
 
April 6, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
April 6, 2020, noon N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 20.0 ppb (15) 0.06 ppb (1) N/A 0.4 μg/m3 (2) 15.0
 
April 6, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 20.0 ppb (15) 0.05 ppb (1) N/A 1.2 μg/m3 (5) 15.0
 
April 6, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.8 μg/m3 (16) 18.0
 
April 6, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
April 6, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 0.7 μg/m3 (3) 24.0
 
April 6, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
April 6, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.2 μg/m3 (22) 26.0
 
April 6, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 6, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 8.4 μg/m3 (35) 35.0
 
April 6, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 9.5 μg/m3 (40) 40.0
 
April 6, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 9.3 μg/m3 (39) 39.0
 
April 5, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.2 μg/m3 (26) 29.0
 
April 5, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
April 5, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 5, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.3 μg/m3 (10) 32.0
 
April 5, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
April 5, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
April 5, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 0.5 μg/m3 (2) 33.0
 
April 5, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
April 5, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A -2.0 μg/m3 (0) 32.0
 
April 5, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.01 ppb (0) N/A -1.5 μg/m3 (0) 31.0
 
April 5, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 35.0 ppb (27) 0.03 ppb (0) N/A -4.7 μg/m3 (0) 27.0
 
April 5, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) 0.08 ppb (1) N/A -3.7 μg/m3 (0) 19.0
 
April 5, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.13 ppb (1) N/A 1.9 μg/m3 (8) 8.0
 
April 5, 2020, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (8) 0.08 ppb (1) N/A 3.8 μg/m3 (16) 16.0
 
April 5, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 8.0 ppb (6) 0.07 ppb (1) N/A 5.5 μg/m3 (23) 23.0
 
April 5, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 8.0 ppb (6) 0.08 ppb (1) N/A 5.4 μg/m3 (23) 23.0
 
April 5, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) 0.07 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
April 5, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.06 ppb (1) N/A 7.9 μg/m3 (33) 33.0
 
April 5, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) 0.04 ppb (0) N/A 5.2 μg/m3 (22) 22.0
 
April 5, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.03 ppb (0) N/A 3.5 μg/m3 (15) 24.0
 
April 5, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.04 ppb (0) N/A 4.4 μg/m3 (18) 26.0
 
April 5, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.04 ppb (0) N/A 5.3 μg/m3 (22) 25.0
 
April 5, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.03 ppb (0) N/A 6.3 μg/m3 (26) 28.0
 
April 5, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.03 ppb (0) N/A 6.2 μg/m3 (26) 28.0
 
April 4, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.02 ppb (0) N/A 7.4 μg/m3 (31) 31.0
 
April 4, 2020, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (28) 0.02 ppb (0) N/A 6.7 μg/m3 (28) 28.0
 
April 4, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.01 ppb (0) N/A 5.3 μg/m3 (22) 28.0
 
April 4, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.0 ppb (0) N/A 4.4 μg/m3 (18) 28.0
 
April 4, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 26.0
 
April 4, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.01 ppb (0) N/A -0.6 μg/m3 (0) 27.0
 
April 4, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.01 ppb (0) N/A 0.2 μg/m3 (1) 25.0
 
April 4, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.01 ppb (0) N/A 0.0 μg/m3 (0) 24.0
 
April 4, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) 0.01 ppb (0) N/A -0.3 μg/m3 (0) 23.0
 
April 4, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.01 ppb (0) N/A -0.9 μg/m3 (0) 22.0
 
April 4, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.01 ppb (0) N/A -0.9 μg/m3 (0) 22.0
 
April 4, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.02 ppb (0) N/A -0.1 μg/m3 (0) 21.0
 
April 4, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.02 ppb (0) N/A 1.2 μg/m3 (5) 21.0
 
April 4, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.03 ppb (0) N/A 1.8 μg/m3 (8) 22.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) 0.02 ppb (0) N/A 2.0 μg/m3 (8) 21.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) 0.01 ppb (0) N/A 2.5 μg/m3 (10) 22.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) 0.01 ppb (0) N/A 1.7 μg/m3 (7) 22.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.01 ppb (0) N/A -1.2 μg/m3 (0) 24.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 25.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.1 μg/m3 (17) 26.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.3 μg/m3 (22) 26.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.5 μg/m3 (31) 31.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 10.8 μg/m3 (45) 45.0
 
April 4, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 10.6 μg/m3 (44) 44.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 8.3 μg/m3 (35) 35.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.2 μg/m3 (1) 38.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 1.2 μg/m3 (5) 38.0
 
April 3, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 49.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A -0.2 μg/m3 (0) 36.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -0.7 μg/m3 (0) 35.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A -0.6 μg/m3 (0) 35.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A -0.4 μg/m3 (0) 34.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A -1.2 μg/m3 (0) 33.0
 
April 3, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 0.7 μg/m3 (3) 32.0
 
April 3, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.3 μg/m3 (10) 32.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 3.8 μg/m3 (16) 29.0
 
April 3, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.2 μg/m3 (18) 30.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.3 μg/m3 (14) 14.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
April 3, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.4 μg/m3 (14) 31.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.1 μg/m3 (13) 30.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.7 μg/m3 (24) 30.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 6.6 μg/m3 (28) 32.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 8.2 μg/m3 (34) 34.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.6 μg/m3 (32) 32.0
 
April 3, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 7.1 μg/m3 (30) 32.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 4.6 μg/m3 (19) 34.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.8 μg/m3 (12) 36.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
April 2, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 6.6 μg/m3 (28) 35.0
 
April 2, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 8.9 μg/m3 (37) 37.0
 
April 2, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.9 μg/m3 (16) 34.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A -0.8 μg/m3 (0) 33.0
 
April 2, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A -0.1 μg/m3 (0) 33.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 0.1 μg/m3 (0) 32.0
 
April 2, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.5 μg/m3 (6) 30.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 2.8 μg/m3 (12) 29.0
 
April 2, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.1 μg/m3 (17) 29.0
 
April 2, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
April 2, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
April 2, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
April 2, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
April 2, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 22.0
 
April 2, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.0 ppb (0) N/A 4.6 μg/m3 (19) 22.0
 
April 2, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.03 ppb (0) N/A 7.1 μg/m3 (30) 30.0
 
April 2, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.05 ppb (1) N/A 7.8 μg/m3 (32) 32.0
 
April 2, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.03 ppb (0) N/A 9.4 μg/m3 (39) 39.0
 
April 2, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 9.2 μg/m3 (38) 38.0
 
April 1, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.4 μg/m3 (31) 31.0
 
April 1, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.8 μg/m3 (16) 32.0
 
April 1, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.3 μg/m3 (1) 35.0
 
April 1, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A -1.1 μg/m3 (0) 37.0
 
April 1, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A -0.5 μg/m3 (0) 35.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
April 1, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 3.7 μg/m3 (15) 31.0
 
April 1, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 3.7 μg/m3 (15) 30.0
 
April 1, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.9 μg/m3 (12) 30.0
 
April 1, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
April 1, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
April 1, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
April 1, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.4 μg/m3 (18) 35.0
 
April 1, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
April 1, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
April 1, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0