AQSQID: 380650002

Site Name: Hannover

Location: Oliver Co, ND

Reporting: True, Located: True

Current AQI: 42.0

Oliver Co ND, US: 47.1858, -101.4281

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 8 p.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 54.0 ppb (42) N/A 19.0 μg/m3 (17) 8.7 μg/m3 (36) 42.0
 
May 25, 2019, 7 p.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 15.0 μg/m3 (14) 3.5 μg/m3 (15) 39.0
 
May 25, 2019, 6 p.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 12.0 μg/m3 (11) 4.3 μg/m3 (18) 37.0
 
May 25, 2019, 5 p.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 10.0 μg/m3 (9) 3.4 μg/m3 (14) 32.0
 
May 25, 2019, 4 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 36.0 ppb (28) N/A 13.0 μg/m3 (12) 1.6 μg/m3 (7) 28.0
 
May 25, 2019, 3 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 10.0 μg/m3 (9) 2.9 μg/m3 (12) 25.0
 
May 25, 2019, 2 p.m. 2.9 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 22.0
 
May 25, 2019, 1 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 6.5 μg/m3 (27) 27.0
 
May 25, 2019, noon 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 5.0 μg/m3 (5) 6.8 μg/m3 (28) 28.0
 
May 25, 2019, 11 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 15.0 ppb (12) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
May 25, 2019, 10 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 13.0 ppb (10) N/A 5.0 μg/m3 (5) 5.6 μg/m3 (23) 23.0
 
May 25, 2019, 9 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 6.0 μg/m3 (5) 5.7 μg/m3 (24) 24.0
 
May 25, 2019, 8 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 7.0 μg/m3 (6) 2.5 μg/m3 (10) 13.0
 
May 25, 2019, 7 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 15.0
 
May 25, 2019, 6 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 14.0
 
May 25, 2019, 5 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 5.0 μg/m3 (5) 1.2 μg/m3 (5) 15.0
 
May 25, 2019, 4 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 18.0
 
May 25, 2019, 3 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 4.0 μg/m3 (4) 5.9 μg/m3 (25) 25.0
 
May 25, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 3.0 μg/m3 (3) 6.4 μg/m3 (27) 27.0
 
May 25, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 22.0
 
May 25, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 21.0
 
May 24, 2019, 11 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 25.0
 
May 24, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 27.0
 
May 24, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 0.7 μg/m3 (3) 27.0
 
May 24, 2019, 8 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (4) 25.0
 
May 24, 2019, 7 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 1.0 μg/m3 (1) 0.6 μg/m3 (2) 25.0
 
May 24, 2019, 6 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (7) 24.0
 
May 24, 2019, 5 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 3.0 μg/m3 (3) 2.4 μg/m3 (10) 21.0
 
May 24, 2019, 4 p.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 18.0
 
May 24, 2019, 3 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 2.0 μg/m3 (2) 4.1 μg/m3 (17) 19.0
 
May 24, 2019, 2 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 1.0 μg/m3 (1) 1.7 μg/m3 (7) 21.0
 
May 24, 2019, 1 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) N/A 1.0 μg/m3 (1) 1.1 μg/m3 (5) 21.0
 
May 24, 2019, noon 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 0.0 μg/m3 (0) 0.7 μg/m3 (3) 20.0
 
May 24, 2019, 11 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 1.0 μg/m3 (1) 2.7 μg/m3 (11) 22.0
 
May 24, 2019, 10 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 1.0 μg/m3 (1) 4.7 μg/m3 (20) 22.0
 
May 24, 2019, 9 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 20.0
 
May 24, 2019, 8 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 5.0 μg/m3 (5) -0.3 μg/m3 (0) 20.0
 
May 24, 2019, 7 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 22.0
 
May 24, 2019, 6 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 22.0
 
May 24, 2019, 5 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 22.0
 
May 24, 2019, 4 a.m. 5.3 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 22.0
 
May 24, 2019, 3 a.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 25.0
 
May 24, 2019, 2 a.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 12.0 μg/m3 (11) 2.9 μg/m3 (12) 30.0
 
May 24, 2019, 1 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 35.0
 
May 24, 2019, midnight 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A 12.0 μg/m3 (11) 3.6 μg/m3 (15) 38.0
 
May 23, 2019, 11 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 38.0
 
May 23, 2019, 10 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 49.0 ppb (38) N/A 10.0 μg/m3 (9) 4.7 μg/m3 (20) 38.0
 
May 23, 2019, 9 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 14.0 μg/m3 (13) 4.9 μg/m3 (20) 34.0
 
May 23, 2019, 8 p.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 11.0 μg/m3 (10) 8.6 μg/m3 (36) 36.0
 
May 23, 2019, 7 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 13.0 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
May 23, 2019, 6 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 19.0 μg/m3 (17) 5.8 μg/m3 (24) 33.0
 
May 23, 2019, 5 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 42.0 ppb (32) N/A 20.0 μg/m3 (18) 4.3 μg/m3 (18) 32.0
 
May 23, 2019, 4 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 42.0 ppb (32) N/A 12.0 μg/m3 (11) 5.3 μg/m3 (22) 32.0
 
May 23, 2019, 3 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 10.0 μg/m3 (9) 3.2 μg/m3 (13) 28.0
 
May 23, 2019, 2 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
May 23, 2019, 1 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 24.0
 
May 23, 2019, noon 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 18.0
 
May 23, 2019, 11 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 14.0 μg/m3 (13) 3.4 μg/m3 (14) 18.0
 
May 23, 2019, 10 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
May 23, 2019, 9 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 7.0 μg/m3 (6) 2.9 μg/m3 (12) 18.0
 
May 23, 2019, 8 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 6.0 μg/m3 (5) 1.7 μg/m3 (7) 20.0
 
May 23, 2019, 7 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 22.0
 
May 23, 2019, 6 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 25.0
 
May 23, 2019, 5 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 28.0
 
May 23, 2019, 4 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 0.4 μg/m3 (2) 26.0
 
May 23, 2019, 3 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 27.0
 
May 23, 2019, 2 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 1.3 μg/m3 (5) 27.0
 
May 23, 2019, 1 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 28.0
 
May 23, 2019, midnight 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 30.0
 
May 22, 2019, 11 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 32.0
 
May 22, 2019, 10 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 7.0 μg/m3 (6) 1.5 μg/m3 (6) 32.0
 
May 22, 2019, 9 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 3.0 μg/m3 (3) 0.6 μg/m3 (2) 32.0
 
May 22, 2019, 8 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 30.0
 
May 22, 2019, 7 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 5.0 μg/m3 (5) -0.5 μg/m3 (0) 28.0
 
May 22, 2019, 6 p.m. 3.3 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) -0.8 μg/m3 (0) 29.0
 
May 22, 2019, 5 p.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 5.0 μg/m3 (5) -0.5 μg/m3 (0) 33.0
 
May 22, 2019, 4 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 4.0 μg/m3 (4) -0.5 μg/m3 (0) 32.0
 
May 22, 2019, 3 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 32.0
 
May 22, 2019, 2 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 32.0
 
May 22, 2019, 1 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 4.0 μg/m3 (4) 3.2 μg/m3 (13) 33.0
 
May 22, 2019, noon 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 33.0
 
May 22, 2019, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 28.0
 
May 22, 2019, 10 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 26.0
 
May 22, 2019, 9 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 14.0 μg/m3 (13) 4.0 μg/m3 (17) 26.0
 
May 22, 2019, 8 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 21.0 μg/m3 (19) 3.2 μg/m3 (13) 25.0
 
May 22, 2019, 7 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 15.0 μg/m3 (14) 4.2 μg/m3 (18) 25.0
 
May 22, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 18.0 μg/m3 (16) 3.7 μg/m3 (15) 25.0
 
May 22, 2019, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 22.0 μg/m3 (20) 1.7 μg/m3 (7) 25.0
 
May 22, 2019, 4 a.m. 2.5 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 19.0 μg/m3 (17) 2.5 μg/m3 (10) 26.0
 
May 22, 2019, 3 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 18.0 μg/m3 (16) 2.9 μg/m3 (12) 29.0
 
May 22, 2019, 2 a.m. 2.3 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 17.0 μg/m3 (15) 2.1 μg/m3 (9) 33.0
 
May 22, 2019, 1 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 15.0 μg/m3 (14) 5.3 μg/m3 (22) 32.0
 
May 22, 2019, midnight 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
May 21, 2019, 11 p.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 17.0 μg/m3 (15) 3.9 μg/m3 (16) 38.0
 
May 21, 2019, 10 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 33.0
 
May 21, 2019, 9 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 4.0 μg/m3 (4) 5.3 μg/m3 (22) 32.0
 
May 21, 2019, 8 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 30.0
 
May 21, 2019, 7 p.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 29.0
 
May 21, 2019, 6 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 30.0
 
May 21, 2019, 5 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 30.0
 
May 21, 2019, 4 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 29.0
 
May 21, 2019, 3 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 27.0
 
May 21, 2019, 2 p.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 23.0
 
May 21, 2019, 1 p.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 22.0
 
May 21, 2019, noon 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 19.0
 
May 21, 2019, 11 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 18.0
 
May 21, 2019, 10 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 19.0
 
May 21, 2019, 9 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 6.0 μg/m3 (5) 1.0 μg/m3 (4) 20.0
 
May 21, 2019, 8 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 0.6 μg/m3 (2) 23.0
 
May 21, 2019, 7 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 1.5 μg/m3 (6) 22.0
 
May 21, 2019, 6 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 22.0
 
May 21, 2019, 5 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 18.0
 
May 21, 2019, 4 a.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 8.0 μg/m3 (7) 1.1 μg/m3 (5) 19.0
 
May 21, 2019, 3 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 13.0 μg/m3 (12) 0.3 μg/m3 (1) 22.0
 
May 21, 2019, 2 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 20.0 μg/m3 (18) 1.2 μg/m3 (5) 27.0
 
May 21, 2019, 1 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 15.0 μg/m3 (14) 1.6 μg/m3 (7) 31.0
 
May 21, 2019, midnight 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 11.0 μg/m3 (10) 2.9 μg/m3 (12) 34.0
 
May 20, 2019, 11 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 34.0
 
May 20, 2019, 10 p.m. 4.5 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 32.0
 
May 20, 2019, 9 p.m. 4.1 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 7.0 μg/m3 (6) 1.5 μg/m3 (6) 32.0
 
May 20, 2019, 8 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 7.0 μg/m3 (6) 0.4 μg/m3 (2) 32.0
 
May 20, 2019, 7 p.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 9.0 μg/m3 (8) 2.1 μg/m3 (9) 32.0
 
May 20, 2019, 6 p.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 4.5 μg/m3 (19) 33.0
 
May 20, 2019, 5 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 2.6 μg/m3 (11) 33.0
 
May 20, 2019, 4 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 8.0 μg/m3 (7) 1.4 μg/m3 (6) 32.0
 
May 20, 2019, 3 p.m. 7.0 ppb (6) 2.3 ppb (2) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 35.0 ppb (27) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 27.0
 
May 20, 2019, 2 p.m. 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 10.0 μg/m3 (9) 2.1 μg/m3 (9) 26.0
 
May 20, 2019, 1 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 11.0 μg/m3 (10) 1.6 μg/m3 (7) 24.0
 
May 20, 2019, noon 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 24.0
 
May 20, 2019, 11 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) 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 20, 2019, 10 a.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 22.0
 
May 20, 2019, 9 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 21.0
 
May 20, 2019, 8 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 21.0
 
May 20, 2019, 7 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 22.0
 
May 20, 2019, 6 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 3.0 μg/m3 (3) 2.8 μg/m3 (12) 22.0
 
May 20, 2019, 5 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 20.0
 
May 20, 2019, 4 a.m. 2.6 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 5.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
May 20, 2019, 3 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 18.0
 
May 20, 2019, 2 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 22.0
 
May 20, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 11.0 μg/m3 (10) 3.3 μg/m3 (14) 25.0
 
May 20, 2019, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 28.0
 
May 19, 2019, 11 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 6.0 μg/m3 (5) 4.2 μg/m3 (18) 28.0
 
May 19, 2019, 10 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 5.0 μg/m3 (5) 1.1 μg/m3 (5) 27.0
 
May 19, 2019, 9 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 5.0 μg/m3 (5) 1.1 μg/m3 (5) 28.0
 
May 19, 2019, 8 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 5.0 μg/m3 (5) 0.8 μg/m3 (3) 28.0
 
May 19, 2019, 7 p.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 3.0 μg/m3 (3) -0.1 μg/m3 (0) 26.0
 
May 19, 2019, 6 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 4.0 μg/m3 (4) 0.9 μg/m3 (4) 25.0
 
May 19, 2019, 5 p.m. 3.2 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 23.0
 
May 19, 2019, 4 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 4.0 μg/m3 (4) 3.1 μg/m3 (13) 22.0
 
May 19, 2019, 3 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 4.0 μg/m3 (4) 2.4 μg/m3 (10) 22.0
 
May 19, 2019, 2 p.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 4.0 μg/m3 (4) -0.2 μg/m3 (0) 20.0
 
May 19, 2019, 1 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 18.0
 
May 19, 2019, noon 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (16) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 16.0
 
May 19, 2019, 11 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
May 19, 2019, 10 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 18.0
 
May 19, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 18.0
 
May 19, 2019, 8 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 6.0 μg/m3 (5) 6.8 μg/m3 (28) 28.0
 
May 19, 2019, 7 a.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 11.0 μg/m3 (10) 1.7 μg/m3 (7) 21.0
 
May 19, 2019, 6 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 15.0 μg/m3 (14) 1.8 μg/m3 (8) 19.0
 
May 19, 2019, 5 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 15.0 μg/m3 (14) 4.2 μg/m3 (18) 20.0
 
May 19, 2019, 4 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 17.0 μg/m3 (15) 4.7 μg/m3 (20) 22.0
 
May 19, 2019, 3 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 19.0 μg/m3 (17) 3.6 μg/m3 (15) 23.0
 
May 19, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 19.0 μg/m3 (17) 1.5 μg/m3 (6) 25.0
 
May 19, 2019, 1 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 21.0 μg/m3 (19) 3.7 μg/m3 (15) 24.0
 
May 19, 2019, midnight 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 22.0 μg/m3 (20) 4.0 μg/m3 (17) 25.0
 
May 18, 2019, 11 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 22.0 μg/m3 (20) 5.2 μg/m3 (22) 25.0
 
May 18, 2019, 10 p.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 21.0 μg/m3 (19) 5.8 μg/m3 (24) 24.0
 
May 18, 2019, 9 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 18.0 μg/m3 (16) 4.7 μg/m3 (20) 22.0