AQSQID: 330150014

Site Name: Portsmouth

Location: Portsmouth, NH

Reporting: True, Located: True

Current AQI: 25.0

Portsmouth NH, US: 43.075367, -70.748014

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 25.0
 
May 25, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 4.3 μg/m3 (18) 25.0
 
May 25, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 11.0 μg/m3 (10) 4.3 μg/m3 (18) 24.0
 
May 25, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 10.0 μg/m3 (9) 4.2 μg/m3 (18) 24.0
 
May 25, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 24.0
 
May 25, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 24.0
 
May 25, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 22.0
 
May 25, 2019, 1 p.m. N/A N/A N/A N/A N/A 5.0 ppb (7) 20.0 ppb (15) N/A 14.0 μg/m3 (13) 5.1 μg/m3 (21) 21.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A 10.0 ppb (14) 10.0 ppb (8) N/A 19.0 μg/m3 (17) 5.8 μg/m3 (24) 24.0
 
May 25, 2019, 11 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 7.0 ppb (5) N/A 15.0 μg/m3 (14) 5.6 μg/m3 (23) 23.0
 
May 25, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
May 25, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
May 25, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
May 25, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 10.0 μg/m3 (9) 5.5 μg/m3 (23) 23.0
 
May 25, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
May 25, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
May 25, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 14.0 ppb (11) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 19.0
 
May 25, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
May 25, 2019, 2 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) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) N/A 10.0 μg/m3 (9) 4.6 μg/m3 (19) 19.0
 
May 25, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 25.0
 
May 24, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 27.0
 
May 24, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 28.0
 
May 24, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 29.0
 
May 24, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 26.0
 
May 24, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 24.0
 
May 24, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 22.0
 
May 24, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 7.0 μg/m3 (6) 1.0 μg/m3 (4) 21.0
 
May 24, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) N/A 6.0 μg/m3 (5) 0.9 μg/m3 (4) 24.0
 
May 24, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 1.1 μg/m3 (5) 27.0
 
May 24, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 12.0 μg/m3 (11) 3.3 μg/m3 (14) 26.0
 
May 24, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 2.8 μg/m3 (12) 25.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 24.0
 
May 24, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 4.4 μg/m3 (18) 22.0
 
May 24, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
May 24, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
May 24, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 11.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
May 24, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
May 24, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
May 24, 2019, 5 a.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) 5.9 μg/m3 (25) 25.0
 
May 24, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 12.0 μg/m3 (11) 5.9 μg/m3 (25) 25.0
 
May 24, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 25.0 μg/m3 (23) 10.4 μg/m3 (43) 43.0
 
May 24, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 13.0 μg/m3 (12) 5.3 μg/m3 (22) 22.0
 
May 24, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 23.0
 
May 24, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 13.0 μg/m3 (12) 4.7 μg/m3 (20) 25.0
 
May 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 12.0 μg/m3 (11) 4.6 μg/m3 (19) 28.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 18.0 μg/m3 (16) 5.3 μg/m3 (22) 29.0
 
May 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 19.0 μg/m3 (17) 5.9 μg/m3 (25) 31.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 20.0 μg/m3 (18) 6.4 μg/m3 (27) 32.0
 
May 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 22.0 μg/m3 (20) 6.4 μg/m3 (27) 34.0
 
May 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 20.0 μg/m3 (18) 5.9 μg/m3 (25) 34.0
 
May 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 25.0 μg/m3 (23) 5.6 μg/m3 (23) 33.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 17.0 μg/m3 (15) 4.8 μg/m3 (20) 29.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 8.0 μg/m3 (7) 1.5 μg/m3 (6) 25.0
 
May 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 2.5 μg/m3 (10) 24.0
 
May 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 24.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 12.0 μg/m3 (11) 3.7 μg/m3 (15) 23.0
 
May 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 12.0 μg/m3 (11) 3.4 μg/m3 (14) 22.0
 
May 23, 2019, 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) 3.4 μg/m3 (14) 22.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 23.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 21.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 20.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 14.0 μg/m3 (13) 4.2 μg/m3 (18) 19.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 26.0 ppb (20) N/A 33.0 μg/m3 (30) 6.6 μg/m3 (28) 30.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 17.0 μg/m3 (15) 4.1 μg/m3 (17) 20.0
 
May 23, 2019, 3 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) 2.3 μg/m3 (10) 22.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 7.0 μg/m3 (6) 2.2 μg/m3 (9) 22.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 7.0 μg/m3 (6) 2.1 μg/m3 (9) 23.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 2.2 μg/m3 (9) 24.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 12.0 μg/m3 (11) 2.1 μg/m3 (9) 25.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 8.0 μg/m3 (7) 1.9 μg/m3 (8) 25.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 25.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 22.0 μg/m3 (20) 2.5 μg/m3 (10) 25.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 35.0 μg/m3 (32) 3.4 μg/m3 (14) 32.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 9.0 μg/m3 (8) 2.5 μg/m3 (10) 24.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 1.9 μg/m3 (8) 25.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 8.0 μg/m3 (7) 1.2 μg/m3 (5) 26.0
 
May 22, 2019, 3 p.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) 1.0 μg/m3 (4) 25.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 6.0 μg/m3 (5) 0.8 μg/m3 (3) 24.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 23.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 0.6 μg/m3 (2) 22.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 4.0 μg/m3 (4) 0.7 μg/m3 (3) 21.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 21.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 3.0 μg/m3 (3) 0.8 μg/m3 (3) 23.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 26.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 35.0 ppb (27) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 27.0
 
May 22, 2019, 6 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) 1.8 μg/m3 (8) 27.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 34.0 ppb (26) N/A 12.0 μg/m3 (11) 2.9 μg/m3 (12) 26.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 25.0
 
May 22, 2019, 3 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) 2.4 μg/m3 (10) 25.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 7.0 μg/m3 (6) 1.6 μg/m3 (7) 25.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 1.6 μg/m3 (7) 25.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A 3.0 ppb (4) 32.0 ppb (25) N/A 16.0 μg/m3 (15) 2.6 μg/m3 (11) 25.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 1.9 μg/m3 (8) 25.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 13.0 μg/m3 (12) 2.1 μg/m3 (9) 25.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 15.0 μg/m3 (14) 2.2 μg/m3 (9) 25.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 16.0 μg/m3 (15) 2.8 μg/m3 (12) 25.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 29.0 μg/m3 (26) 3.7 μg/m3 (15) 26.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 27.0 μg/m3 (25) 2.8 μg/m3 (12) 25.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 26.0 μg/m3 (24) 2.8 μg/m3 (12) 24.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 25.0 μg/m3 (23) 2.4 μg/m3 (10) 23.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 19.0 μg/m3 (17) 2.2 μg/m3 (9) 24.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 17.0 μg/m3 (15) 2.1 μg/m3 (9) 24.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 17.0 μg/m3 (15) 2.2 μg/m3 (9) 22.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 17.0 μg/m3 (15) 1.7 μg/m3 (7) 18.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) N/A 13.0 μg/m3 (12) 1.6 μg/m3 (7) 15.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 8.0 μg/m3 (7) 2.2 μg/m3 (9) 17.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
May 21, 2019, 8 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) 3.6 μg/m3 (15) 22.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 25.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 15.0 μg/m3 (14) 4.7 μg/m3 (20) 27.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 16.0 μg/m3 (15) 5.7 μg/m3 (24) 27.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) N/A 17.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 16.0 μg/m3 (15) 7.5 μg/m3 (31) 31.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 32.0 ppb (25) N/A 30.0 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 15.0 μg/m3 (14) 8.7 μg/m3 (36) 36.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 13.0 μg/m3 (12) 5.7 μg/m3 (24) 31.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 35.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 14.0 μg/m3 (13) 6.9 μg/m3 (29) 34.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 14.0 μg/m3 (13) 5.9 μg/m3 (25) 34.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 21.0 μg/m3 (19) 7.2 μg/m3 (30) 35.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 25.0 μg/m3 (23) 12.3 μg/m3 (51) 51.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A 18.0 μg/m3 (16) 9.1 μg/m3 (38) 38.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 17.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 20.0 μg/m3 (18) 9.3 μg/m3 (39) 39.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 39.0 μg/m3 (35) 10.8 μg/m3 (45) 45.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) N/A 26.0 μg/m3 (24) 9.1 μg/m3 (38) 38.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) N/A 11.0 μg/m3 (10) 7.5 μg/m3 (31) 31.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) N/A 10.0 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
May 20, 2019, 9 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) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 14.0 μg/m3 (13) 8.7 μg/m3 (36) 36.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 15.0 μg/m3 (14) 8.2 μg/m3 (34) 34.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 15.0 μg/m3 (14) 7.9 μg/m3 (33) 33.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 14.0 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 16.0 μg/m3 (15) 8.4 μg/m3 (35) 35.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 17.0 μg/m3 (15) 8.5 μg/m3 (35) 35.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 16.0 μg/m3 (15) 8.5 μg/m3 (35) 35.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 18.0 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 18.0 μg/m3 (16) 8.5 μg/m3 (35) 35.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 16.0 μg/m3 (15) 6.8 μg/m3 (28) 32.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 14.0 μg/m3 (13) 5.8 μg/m3 (24) 31.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 12.0 μg/m3 (11) 5.2 μg/m3 (22) 31.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 12.0 μg/m3 (11) 5.7 μg/m3 (24) 34.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) 5.8 μg/m3 (24) 35.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 31.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 30.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 13.0 μg/m3 (12) 5.4 μg/m3 (23) 26.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 5.4 μg/m3 (23) 26.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 25.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 5.4 μg/m3 (23) 25.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 25.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 4.5 μg/m3 (19) 25.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 9.0 μg/m3 (8) 3.8 μg/m3 (16) 25.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 25.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 28.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 28.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 20.0
 
May 19, 2019, 3 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) 2.5 μg/m3 (10) 20.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 24.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 25.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 25.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 25.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.9 μg/m3 (8) 25.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 7.0 μg/m3 (6) 1.9 μg/m3 (8) 25.0