AQSQID: 330150014

Site Name: Portsmouth

Location: Portsmouth, NH

Reporting: True, Located: True

Current AQI: 5.0

Portsmouth NH, US: 43.075367, -70.748014

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 5.0
 
Jan. 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 25.0
 
Jan. 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 30.0 ppb (23) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 23.0
 
Jan. 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 7.9 μg/m3 (33) 33.0
 
Jan. 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 2.4 μg/m3 (10) 24.0
 
Jan. 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 10.0 μg/m3 (9) 9.6 μg/m3 (40) 40.0
 
Jan. 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 13.0 μg/m3 (12) 3.8 μg/m3 (16) 24.0
 
Jan. 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 24.0
 
Jan. 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 29.0 ppb (22) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
Jan. 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 25.0 ppb (19) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Jan. 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 20.0 ppb (15) N/A 16.0 μg/m3 (15) 9.7 μg/m3 (40) 40.0
 
Jan. 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 17.0 ppb (13) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
Jan. 23, 2019, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 22.0 ppb (17) N/A 10.0 μg/m3 (9) 8.1 μg/m3 (34) 34.0
 
Jan. 23, 2019, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 19.0 ppb (15) N/A 7.0 μg/m3 (6) 15.1 μg/m3 (57) 57.0
 
Jan. 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 10.0 ppb (8) N/A 12.0 μg/m3 (11) 5.3 μg/m3 (22) 22.0
 
Jan. 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 14.0 ppb (11) N/A 4.0 μg/m3 (4) 7.4 μg/m3 (31) 31.0
 
Jan. 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 25.0 ppb (19) N/A 9.0 μg/m3 (8) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 16.0 ppb (12) N/A 13.0 μg/m3 (12) 10.4 μg/m3 (43) 43.0
 
Jan. 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 19.0 ppb (15) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Jan. 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 24.0 ppb (18) N/A 10.0 μg/m3 (9) 3.8 μg/m3 (16) 18.0
 
Jan. 23, 2019, 3 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 25.0 ppb (19) N/A 13.0 μg/m3 (12) 5.7 μg/m3 (24) 24.0
 
Jan. 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 13.0 ppb (10) N/A 33.0 μg/m3 (30) 11.4 μg/m3 (48) 48.0
 
Jan. 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 24.0 ppb (18) N/A 11.0 μg/m3 (10) 0.8 μg/m3 (3) 18.0
 
Jan. 23, 2019, midnight N/A N/A N/A N/A N/A 3.0 ppb (4) 26.0 ppb (20) N/A 21.0 μg/m3 (19) 1.9 μg/m3 (8) 20.0
 
Jan. 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
Jan. 22, 2019, 10 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 31.0 ppb (24) N/A 15.0 μg/m3 (14) 14.5 μg/m3 (55) 55.0
 
Jan. 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 32.0 ppb (25) N/A 5.0 μg/m3 (5) -2.2 μg/m3 (0) 25.0
 
Jan. 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 34.0 ppb (26) N/A 7.0 μg/m3 (6) -4.4 μg/m3 (0) 26.0
 
Jan. 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 6.0 μg/m3 (5) -3.6 μg/m3 (0) 26.0
 
Jan. 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 26.0
 
Jan. 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 7.0 μg/m3 (6) 3.8 μg/m3 (16) 27.0
 
Jan. 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 0.6 μg/m3 (2) 27.0
 
Jan. 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 25.0
 
Jan. 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 25.0
 
Jan. 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) N/A 8.0 μg/m3 (7) 6.8 μg/m3 (28) 28.0
 
Jan. 22, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 11.0 μg/m3 (10) 0.0 μg/m3 (0) 24.0
 
Jan. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 8.0 μg/m3 (7) -0.4 μg/m3 (0) 24.0
 
Jan. 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A -2.0 μg/m3 (0) 4.2 μg/m3 (18) 25.0
 
Jan. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 6.0 μg/m3 (5) -3.9 μg/m3 (0) 25.0
 
Jan. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 34.0 ppb (26) N/A 2.0 μg/m3 (2) 5.9 μg/m3 (25) 26.0
 
Jan. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 33.0 ppb (25) N/A 0.0 μg/m3 (0) 5.1 μg/m3 (21) 25.0
 
Jan. 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) N/A 7.0 μg/m3 (6) -1.1 μg/m3 (0) 25.0
 
Jan. 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) N/A -5.0 μg/m3 (0) N/A 25.0
 
Jan. 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 7.3 μg/m3 (30) 30.0
 
Jan. 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 25.0
 
Jan. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 32.0 ppb (25) N/A 0.0 μg/m3 (0) 3.0 μg/m3 (12) 25.0
 
Jan. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 30.0 ppb (23) N/A 5.0 μg/m3 (5) -0.3 μg/m3 (0) 23.0
 
Jan. 22, 2019, midnight N/A N/A N/A N/A N/A 5.0 ppb (7) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 23.0
 
Jan. 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 30.0 ppb (23) N/A 10.0 μg/m3 (9) 3.8 μg/m3 (16) 23.0
 
Jan. 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 29.0 ppb (22) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 22.0
 
Jan. 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 29.0 ppb (22) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 22.0
 
Jan. 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 28.0 ppb (22) N/A 0.0 μg/m3 (0) 3.7 μg/m3 (15) 22.0
 
Jan. 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 29.0 ppb (22) N/A 8.0 μg/m3 (7) 2.9 μg/m3 (12) 22.0
 
Jan. 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 4.0 μg/m3 (4) 4.9 μg/m3 (20) 22.0
 
Jan. 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 22.0
 
Jan. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 7.0 μg/m3 (6) 2.2 μg/m3 (9) 22.0
 
Jan. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 21.0
 
Jan. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 8.0 μg/m3 (7) 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 5.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
Jan. 21, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 4.0 μg/m3 (4) 5.9 μg/m3 (25) 25.0
 
Jan. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 21.0
 
Jan. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 1.0 μg/m3 (1) -1.3 μg/m3 (0) 22.0
 
Jan. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A -1.0 μg/m3 (0) 1.0 μg/m3 (4) 4.0
 
Jan. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 6.0 μg/m3 (5) 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 3.0 μg/m3 (3) 4.8 μg/m3 (20) 22.0
 
Jan. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Jan. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A -2.0 μg/m3 (0) -1.2 μg/m3 (0) 22.0
 
Jan. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A -2.0 μg/m3 (0) 0.0 μg/m3 (0) 23.0
 
Jan. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 23.0
 
Jan. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 0.2 μg/m3 (1) 23.0
 
Jan. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A -1.0 μg/m3 (0) 2.7 μg/m3 (11) 22.0
 
Jan. 21, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (17) N/A 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A N/A -0.2 μg/m3 (0) 22.0
 
Jan. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
Jan. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A -0.5 μg/m3 (0) 23.0
 
Jan. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 4.0
 
Jan. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A -4.0 μg/m3 (0) -2.2 μg/m3 (0) 23.0
 
Jan. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 2.2 μg/m3 (9) 23.0
 
Jan. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 10.6 μg/m3 (44) 44.0
 
Jan. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 75.0 μg/m3 (60) 8.6 μg/m3 (36) 60.0
 
Jan. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 50.0 μg/m3 (45) 2.2 μg/m3 (9) 45.0
 
Jan. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 20, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 6.3 μg/m3 (26) 26.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 2.1 μg/m3 (9) 24.0
 
Jan. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A -2.4 μg/m3 (0) 24.0
 
Jan. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A -1.1 μg/m3 (0) 23.0
 
Jan. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 7.0 μg/m3 (6) N/A 27.0
 
Jan. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 4.0 μg/m3 (4) -2.9 μg/m3 (0) 25.0
 
Jan. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 26.0 μg/m3 (24) 2.9 μg/m3 (12) 25.0
 
Jan. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 10.0 μg/m3 (9) -3.1 μg/m3 (0) 25.0
 
Jan. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 14.0 μg/m3 (13) N/A 25.0
 
Jan. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 10.0 μg/m3 (9) -1.8 μg/m3 (0) 28.0
 
Jan. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (28) N/A 15.0 μg/m3 (14) 5.4 μg/m3 (23) 28.0
 
Jan. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 37.0 ppb (28) N/A 7.0 μg/m3 (6) 12.1 μg/m3 (50) 50.0
 
Jan. 20, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 29.0
 
Jan. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
Jan. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 4.0 μg/m3 (4) 10.4 μg/m3 (43) 43.0
 
Jan. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 27.0
 
Jan. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 26.0
 
Jan. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 7.0 μg/m3 (6) -0.8 μg/m3 (0) 25.0
 
Jan. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 25.0
 
Jan. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 0.0 μg/m3 (0) 5.6 μg/m3 (23) 24.0
 
Jan. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 10.0 ppb (14) 29.0 ppb (22) N/A 9.0 μg/m3 (8) 7.3 μg/m3 (30) 30.0
 
Jan. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 24.0
 
Jan. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 2.0 μg/m3 (2) 4.4 μg/m3 (18) 24.0
 
Jan. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 23.0
 
Jan. 19, 2019, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 2.0 μg/m3 (2) 2.9 μg/m3 (12) 24.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A -1.0 μg/m3 (0) 4.9 μg/m3 (20) 24.0
 
Jan. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 29.0 ppb (22) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 22.0
 
Jan. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (20) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 21.0 ppb (16) N/A 9.0 μg/m3 (8) 6.8 μg/m3 (28) 28.0
 
Jan. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 6.0 ppb (5) N/A 16.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Jan. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 19.0 ppb (15) N/A 8.0 μg/m3 (7) 8.1 μg/m3 (34) 34.0
 
Jan. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 13.0 ppb (10) N/A 1.0 μg/m3 (1) 8.5 μg/m3 (35) 35.0
 
Jan. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 12.0 ppb (9) N/A 6.0 μg/m3 (5) 21.5 μg/m3 (70) 70.0
 
Jan. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 12.0 ppb (9) N/A 12.0 μg/m3 (11) 17.6 μg/m3 (62) 62.0
 
Jan. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 13.0 ppb (10) N/A 13.0 μg/m3 (12) 13.5 μg/m3 (53) 53.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 13.0 ppb (10) N/A 23.0 μg/m3 (21) 23.1 μg/m3 (74) 74.0
 
Jan. 19, 2019, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 10.0 ppb (8) N/A 19.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
Jan. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (16) N/A 16.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 9.0 μg/m3 (8) 8.4 μg/m3 (35) 35.0
 
Jan. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 0.4 μg/m3 (2) 24.0
 
Jan. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 0.5 μg/m3 (2) 26.0
 
Jan. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 0.0 μg/m3 (0) -1.2 μg/m3 (0) 26.0
 
Jan. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
Jan. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 17.0 ppb (13) N/A 26.0 μg/m3 (24) 11.3 μg/m3 (47) 47.0
 
Jan. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 10.0 ppb (8) N/A 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 12.0 ppb (9) N/A 23.0 μg/m3 (21) 20.1 μg/m3 (67) 67.0
 
Jan. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 11.0 ppb (8) N/A 30.0 μg/m3 (27) 20.7 μg/m3 (69) 69.0
 
Jan. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 6.0 ppb (5) N/A 25.0 μg/m3 (23) 15.0 μg/m3 (56) 56.0
 
Jan. 18, 2019, noon N/A N/A N/A N/A N/A 3.0 ppb (4) 4.0 ppb (3) N/A 17.0 μg/m3 (15) 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 13.0 ppb (10) N/A 6.0 μg/m3 (5) 2.2 μg/m3 (9) 10.0
 
Jan. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 12.0 ppb (9) N/A 16.0 μg/m3 (15) 1.6 μg/m3 (7) 15.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 10.0 ppb (8) N/A 6.0 μg/m3 (5) 8.4 μg/m3 (35) 35.0
 
Jan. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 11.0 ppb (8) N/A 13.0 μg/m3 (12) 12.3 μg/m3 (51) 51.0
 
Jan. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 17.0 ppb (13) N/A 4.0 μg/m3 (4) 1.3 μg/m3 (5) 13.0
 
Jan. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A 5.0 μg/m3 (5) 8.8 μg/m3 (37) 37.0
 
Jan. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 8.0 μg/m3 (7) -2.1 μg/m3 (0) 18.0
 
Jan. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 9.0 μg/m3 (8) 6.1 μg/m3 (25) 25.0
 
Jan. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (17) N/A 7.0 μg/m3 (6) 0.6 μg/m3 (2) 17.0
 
Jan. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 26.0 ppb (20) N/A 7.0 μg/m3 (6) 6.4 μg/m3 (27) 27.0
 
Jan. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
Jan. 18, 2019, midnight N/A N/A N/A N/A N/A 3.0 ppb (4) 20.0 ppb (15) N/A 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A 29.0 μg/m3 (26) 13.9 μg/m3 (54) 54.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A 10.0 μg/m3 (9) 0.9 μg/m3 (4) 19.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 25.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A -2.0 μg/m3 (0) 8.8 μg/m3 (37) 37.0
 
Jan. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 7.0 μg/m3 (6) -2.9 μg/m3 (0) 26.0
 
Jan. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 26.0
 
Jan. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 1.2 μg/m3 (5) 25.0
 
Jan. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 19.0 μg/m3 (17) 13.4 μg/m3 (53) 53.0
 
Jan. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 27.0 ppb (21) N/A 12.0 μg/m3 (11) 2.3 μg/m3 (10) 21.0
 
Jan. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 28.0 ppb (22) N/A 15.0 μg/m3 (14) 1.7 μg/m3 (7) 22.0
 
Jan. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 27.0 ppb (21) N/A 6.0 μg/m3 (5) 2.0 μg/m3 (8) 21.0
 
Jan. 17, 2019, noon N/A N/A N/A N/A N/A 5.0 ppb (7) 26.0 ppb (20) N/A 10.0 μg/m3 (9) 0.2 μg/m3 (1) 20.0
 
Jan. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 10.0 μg/m3 (9) 3.7 μg/m3 (15) 23.0
 
Jan. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 6.0 μg/m3 (5) 0.5 μg/m3 (2) 22.0
 
Jan. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) N/A N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 13.0
 
Jan. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 3.0 μg/m3 (3) -2.6 μg/m3 (0) 25.0
 
Jan. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A -2.0 μg/m3 (0) N/A 24.0
 
Jan. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 30.0 ppb (23) N/A 6.0 μg/m3 (5) -3.6 μg/m3 (0) 23.0
 
Jan. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 16.0 μg/m3 (15) 3.5 μg/m3 (15) 25.0
 
Jan. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 32.0 ppb (25) N/A 19.0 μg/m3 (17) 0.9 μg/m3 (4) 25.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 25.0 ppb (19) N/A 10.0 μg/m3 (9) 2.2 μg/m3 (9) 19.0
 
Jan. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (15) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0