AQSQID: 330150014

Site Name: Portsmouth

Location: Portsmouth (Downtown), NH

Reporting: True, Located: True

Current AQI: 22.0

Portsmouth (Downtown) NH, US: 43.075371, -70.748017

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 19, 2020, 8 p.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) 3.0 μg/m3 (12) 22.0
 
Jan. 19, 2020, 7 p.m. 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) 2.8 μg/m3 (12) 21.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 20.0
 
Jan. 19, 2020, 5 p.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) 5.3 μg/m3 (22) 22.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (18) N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 22.0 ppb (17) N/A 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) N/A N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (16) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
Jan. 19, 2020, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (14) N/A 9.0 μg/m3 (8) 6.2 μg/m3 (26) 26.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 12.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 7.3 μg/m3 (30) 30.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 27.0 ppb (21) N/A 12.0 μg/m3 (11) 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 26.0 ppb (20) N/A 27.0 μg/m3 (25) 10.2 μg/m3 (42) 42.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 18.0 ppb (14) N/A 26.0 μg/m3 (24) 12.9 μg/m3 (52) 52.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 20.0 ppb (15) N/A 19.0 μg/m3 (17) 12.1 μg/m3 (50) 50.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 20.0 ppb (15) N/A 19.0 μg/m3 (17) 11.9 μg/m3 (50) 50.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A 22.0 μg/m3 (20) 9.7 μg/m3 (40) 40.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (29) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 29.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 13.0 μg/m3 (12) 8.7 μg/m3 (36) 36.0
 
Jan. 19, 2020, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A 13.0 μg/m3 (12) 9.1 μg/m3 (38) 38.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 18.0 μg/m3 (16) 7.3 μg/m3 (30) 30.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 15.0 μg/m3 (14) 5.7 μg/m3 (24) 25.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 27.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 28.0
 
Jan. 18, 2020, 6 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) 4.0 μg/m3 (17) 27.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 28.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 26.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 27.0 μg/m3 (25) 7.2 μg/m3 (30) 30.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 25.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 25.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 24.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 24.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 25.0
 
Jan. 18, 2020, 9 a.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) 4.0 μg/m3 (17) 25.0
 
Jan. 18, 2020, 8 a.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) 4.0 μg/m3 (17) 25.0
 
Jan. 18, 2020, 7 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) 4.1 μg/m3 (17) 25.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 25.0
 
Jan. 18, 2020, 5 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) 4.3 μg/m3 (18) 25.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 12.0 μg/m3 (11) 4.6 μg/m3 (19) 25.0
 
Jan. 18, 2020, 3 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) 4.5 μg/m3 (19) 25.0
 
Jan. 18, 2020, 2 a.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) 4.7 μg/m3 (20) 26.0
 
Jan. 18, 2020, 1 a.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) 5.0 μg/m3 (21) 26.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 27.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 4.3 μg/m3 (18) 26.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 16.0 μg/m3 (15) 4.1 μg/m3 (17) 26.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (16) 26.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 14.0 μg/m3 (13) 4.1 μg/m3 (17) 28.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 13.0 μg/m3 (12) 3.9 μg/m3 (16) 27.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 28.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 22.0 μg/m3 (20) 4.1 μg/m3 (17) 28.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 19.0 μg/m3 (17) 4.3 μg/m3 (18) 27.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 20.0 μg/m3 (18) 4.4 μg/m3 (18) 27.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 22.0 μg/m3 (20) 4.4 μg/m3 (18) 26.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 28.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 19.0 μg/m3 (17) 4.3 μg/m3 (18) 27.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 31.0 ppb (24) N/A 15.0 μg/m3 (14) 3.7 μg/m3 (15) 24.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (27) N/A 15.0 μg/m3 (14) 3.8 μg/m3 (16) 27.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) N/A 16.0 μg/m3 (15) 3.4 μg/m3 (14) 28.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 26.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 25.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 30.0 ppb (23) N/A 14.0 μg/m3 (13) 3.9 μg/m3 (16) 23.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 29.0 ppb (22) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 22.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (20) N/A 19.0 μg/m3 (17) 4.8 μg/m3 (20) 20.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 16.0 μg/m3 (15) 4.5 μg/m3 (19) 19.0
 
Jan. 17, 2020, 2 a.m. 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) 3.5 μg/m3 (15) 17.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 17.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (18) N/A 27.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 25.0 ppb (19) N/A 24.0 μg/m3 (22) 5.5 μg/m3 (23) 23.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 21.0 ppb (16) N/A 15.0 μg/m3 (14) 5.4 μg/m3 (23) 23.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 23.0 μg/m3 (21) 4.7 μg/m3 (20) 21.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 18.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 18.0 ppb (14) N/A 25.0 μg/m3 (23) 4.9 μg/m3 (20) 23.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 14.0 ppb (11) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 16.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 15.0 ppb (12) N/A 12.0 μg/m3 (11) 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 10.0 μg/m3 (9) 6.3 μg/m3 (26) 26.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 24.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 8.0 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 10.0 μg/m3 (9) 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A 11.0 μg/m3 (10) 7.8 μg/m3 (32) 32.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 8.0 ppb (6) N/A 13.0 μg/m3 (12) 8.7 μg/m3 (36) 36.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A 19.0 μg/m3 (17) 12.2 μg/m3 (50) 50.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A 35.0 μg/m3 (32) 21.6 μg/m3 (70) 70.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 35.0 μg/m3 (32) 18.9 μg/m3 (65) 65.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 1.0 ppb (1) N/A 33.0 μg/m3 (30) 16.8 μg/m3 (60) 60.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) N/A 21.0 μg/m3 (19) 14.8 μg/m3 (56) 56.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) N/A 16.0 μg/m3 (15) 11.6 μg/m3 (48) 48.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) N/A 17.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
Jan. 16, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) N/A 26.0 μg/m3 (24) 16.1 μg/m3 (59) 59.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) N/A 28.0 μg/m3 (25) 12.5 μg/m3 (51) 51.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 14.0 μg/m3 (13) 5.2 μg/m3 (22) 22.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 13.0 μg/m3 (12) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 22.0 ppb (17) N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 19.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 19.0 μg/m3 (17) 4.7 μg/m3 (20) 20.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (16) N/A 12.0 μg/m3 (11) 4.4 μg/m3 (18) 18.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 21.0 ppb (16) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 9.0 μg/m3 (8) 6.6 μg/m3 (28) 28.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 11.0 ppb (8) N/A 12.0 μg/m3 (11) 9.9 μg/m3 (41) 41.0
 
Jan. 15, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 17.0 μg/m3 (15) 12.7 μg/m3 (51) 51.0
 
Jan. 15, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) N/A 17.0 μg/m3 (15) 13.4 μg/m3 (53) 53.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 6.0 ppb (5) N/A 33.0 μg/m3 (30) 15.2 μg/m3 (57) 57.0
 
Jan. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A 20.0 μg/m3 (18) 14.3 μg/m3 (55) 55.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A 19.0 μg/m3 (17) 13.7 μg/m3 (54) 54.0
 
Jan. 15, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) N/A 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A 39.0 μg/m3 (35) 15.5 μg/m3 (57) 57.0
 
Jan. 15, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 8.0 ppb (6) N/A 47.0 μg/m3 (43) 15.2 μg/m3 (57) 57.0
 
Jan. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 39.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
Jan. 15, 2020, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 9.0 ppb (7) N/A 38.0 μg/m3 (35) 13.4 μg/m3 (53) 53.0
 
Jan. 15, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 12.0 ppb (9) N/A 25.0 μg/m3 (23) 10.9 μg/m3 (45) 45.0
 
Jan. 15, 2020, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 11.0 ppb (8) N/A 36.0 μg/m3 (33) 11.1 μg/m3 (46) 46.0
 
Jan. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Jan. 15, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 15.0 ppb (12) N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 14, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 23.0
 
Jan. 14, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 23.0
 
Jan. 14, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 19.0
 
Jan. 14, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Jan. 14, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 9.0 μg/m3 (8) 5.8 μg/m3 (24) 24.0
 
Jan. 14, 2020, 4 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 19.0 ppb (15) N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 14, 2020, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 12.0 ppb (9) N/A 15.0 μg/m3 (14) 9.2 μg/m3 (38) 38.0
 
Jan. 14, 2020, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 11.0 ppb (8) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Jan. 14, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Jan. 14, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 12.0 μg/m3 (11) 8.7 μg/m3 (36) 36.0
 
Jan. 14, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 10.0 μg/m3 (9) 7.7 μg/m3 (32) 32.0
 
Jan. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 16.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 10.0 μg/m3 (9) 7.8 μg/m3 (32) 32.0
 
Jan. 14, 2020, 8 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 12.0 ppb (9) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
Jan. 14, 2020, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 13.0 ppb (10) N/A 12.0 μg/m3 (11) 8.3 μg/m3 (35) 35.0
 
Jan. 14, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 14.0 ppb (11) N/A 11.0 μg/m3 (10) 8.3 μg/m3 (35) 35.0
 
Jan. 14, 2020, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 12.0 ppb (9) N/A 13.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Jan. 14, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 13.0 μg/m3 (12) 8.4 μg/m3 (35) 35.0
 
Jan. 14, 2020, 3 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 15.0 ppb (12) N/A 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
Jan. 14, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 31.0 μg/m3 (28) 9.9 μg/m3 (41) 41.0
 
Jan. 14, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 23.0 μg/m3 (21) 9.2 μg/m3 (38) 38.0
 
Jan. 14, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 14.0 μg/m3 (13) 8.2 μg/m3 (34) 34.0
 
Jan. 13, 2020, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Jan. 13, 2020, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Jan. 13, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
Jan. 13, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 10.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Jan. 13, 2020, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 10.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 13, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 20.0
 
Jan. 13, 2020, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 19.0
 
Jan. 13, 2020, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 10.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 20.0
 
Jan. 13, 2020, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 19.0
 
Jan. 13, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 20.0
 
Jan. 13, 2020, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 22.0
 
Jan. 13, 2020, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 22.0
 
Jan. 13, 2020, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 22.0
 
Jan. 13, 2020, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 8.0 μg/m3 (7) 3.6 μg/m3 (15) 22.0
 
Jan. 13, 2020, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 22.0
 
Jan. 13, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 22.0
 
Jan. 13, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 21.0
 
Jan. 13, 2020, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 20.0
 
Jan. 13, 2020, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 20.0
 
Jan. 13, 2020, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 14.0 μg/m3 (13) 3.6 μg/m3 (15) 20.0
 
Jan. 13, 2020, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 20.0
 
Jan. 13, 2020, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 7.0 μg/m3 (6) 3.2 μg/m3 (13) 18.0
 
Jan. 12, 2020, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 25.0 ppb (19) N/A 25.0 μg/m3 (23) 3.5 μg/m3 (15) 23.0
 
Jan. 12, 2020, 10 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 23.0 ppb (18) N/A 22.0 μg/m3 (20) 3.8 μg/m3 (16) 20.0
 
Jan. 12, 2020, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 1.5 μg/m3 (6) 18.0