AQSQID: 380650002

Site Name: Hannover

Location: Stanton (N Dakota Hwy 31), ND

Reporting: True, Located: True

Current AQI: 19.0

Stanton (N Dakota Hwy 31) ND, US: 47.1858, -101.4281

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 1, 2020, 7 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 0.0 μg/m3 (0) 4.5 μg/m3 (19) 19.0
 
April 1, 2020, 6 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 0.0 μg/m3 (0) 3.1 μg/m3 (13) 19.0
 
April 1, 2020, 5 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 0.0 μg/m3 (0) 5.4 μg/m3 (23) 23.0
 
April 1, 2020, 4 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 2.0 μg/m3 (2) 5.7 μg/m3 (24) 24.0
 
April 1, 2020, 3 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 3.0 μg/m3 (3) 7.2 μg/m3 (30) 30.0
 
April 1, 2020, 2 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 4.0 μg/m3 (4) 7.3 μg/m3 (30) 30.0
 
April 1, 2020, 1 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 14.0 μg/m3 (13) 6.1 μg/m3 (25) 25.0
 
April 1, 2020, midnight 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 28.0
 
March 31, 2020, 11 p.m. 1.7 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 12.0 μg/m3 (11) 3.5 μg/m3 (15) 32.0
 
March 31, 2020, 10 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 35.0
 
March 31, 2020, 9 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 5.3 μg/m3 (22) 36.0
 
March 31, 2020, 8 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 35.0
 
March 31, 2020, 7 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 33.0
 
March 31, 2020, 6 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 30.0
 
March 31, 2020, 5 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 29.0
 
March 31, 2020, 4 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 7.0 μg/m3 (6) 3.0 μg/m3 (12) 27.0
 
March 31, 2020, 3 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 4.0 μg/m3 (4) 5.2 μg/m3 (22) 24.0
 
March 31, 2020, 2 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 1.0 μg/m3 (1) 6.2 μg/m3 (26) 26.0
 
March 31, 2020, 1 p.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 1.0 μg/m3 (1) 4.9 μg/m3 (20) 22.0
 
March 31, 2020, noon 2.7 ppb (3) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 2.0 μg/m3 (2) 2.8 μg/m3 (12) 20.0
 
March 31, 2020, 11 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 2.0 μg/m3 (2) 5.4 μg/m3 (23) 23.0
 
March 31, 2020, 10 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 1.0 μg/m3 (1) 5.8 μg/m3 (24) 24.0
 
March 31, 2020, 9 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (12) 24.0
 
March 31, 2020, 8 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 0.0 μg/m3 (0) 3.8 μg/m3 (16) 24.0
 
March 31, 2020, 7 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.4 μg/m3 (10) 23.0
 
March 31, 2020, 6 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 25.0
 
March 31, 2020, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 2.0 μg/m3 (2) 3.1 μg/m3 (13) 29.0
 
March 31, 2020, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (12) 30.0
 
March 31, 2020, 3 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 2.0 μg/m3 (2) 2.1 μg/m3 (9) 29.0
 
March 31, 2020, 2 a.m. 1.3 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) 3.8 μg/m3 (16) 28.0
 
March 31, 2020, 1 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 9.0 μg/m3 (8) 3.3 μg/m3 (14) 31.0
 
March 31, 2020, midnight 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 16.0 μg/m3 (15) 0.9 μg/m3 (4) 31.0
 
March 30, 2020, 11 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 34.0
 
March 30, 2020, 10 p.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
March 30, 2020, 9 p.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 13.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 33.1 μg/m3 (95) 95.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) 0.1 μg/m3 (0) 30.0
 
March 30, 2020, 5 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 13.0 μg/m3 (12) 1.7 μg/m3 (7) 29.0
 
March 30, 2020, 4 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 12.0 μg/m3 (11) 2.3 μg/m3 (10) 28.0
 
March 30, 2020, 3 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 11.0 μg/m3 (10) 0.7 μg/m3 (3) 28.0
 
March 30, 2020, 2 p.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 17.0 μg/m3 (15) 2.8 μg/m3 (12) 25.0
 
March 30, 2020, 1 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 17.0 μg/m3 (15) 4.4 μg/m3 (18) 22.0
 
March 30, 2020, noon 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 22.0
 
March 30, 2020, 11 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 24.0
 
March 30, 2020, 10 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 3.1 μg/m3 (13) 25.0
 
March 30, 2020, 9 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 5.7 μg/m3 (24) 26.0
 
March 30, 2020, 8 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 6.1 μg/m3 (25) 26.0
 
March 30, 2020, 7 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 2.7 μg/m3 (11) 26.0
 
March 30, 2020, 6 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 26.0
 
March 30, 2020, 5 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 4.1 μg/m3 (17) 26.0
 
March 30, 2020, 4 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 25.0
 
March 30, 2020, 3 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 33.0 ppb (25) N/A 13.0 μg/m3 (12) 4.1 μg/m3 (17) 25.0
 
March 30, 2020, 2 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 13.0 μg/m3 (12) 4.3 μg/m3 (18) 28.0
 
March 30, 2020, 1 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 29.0
 
March 30, 2020, midnight 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 41.0 ppb (32) N/A 14.0 μg/m3 (13) 2.9 μg/m3 (12) 32.0
 
March 29, 2020, 11 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 46.0 ppb (35) N/A 11.0 μg/m3 (10) 2.6 μg/m3 (11) 35.0
 
March 29, 2020, 10 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 35.0
 
March 29, 2020, 9 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 36.0
 
March 29, 2020, 8 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 7.0 μg/m3 (6) 1.3 μg/m3 (5) 35.0
 
March 29, 2020, 7 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 7.0 μg/m3 (6) -0.2 μg/m3 (0) 36.0
 
March 29, 2020, 6 p.m. 0.8 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 7.0 μg/m3 (6) 1.7 μg/m3 (7) 35.0
 
March 29, 2020, 5 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 8.0 μg/m3 (7) 2.8 μg/m3 (12) 35.0
 
March 29, 2020, 4 p.m. 6.2 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A 3.0 ppb (4) 40.0 ppb (31) N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 31.0
 
March 29, 2020, 3 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 8.0 μg/m3 (7) 6.1 μg/m3 (25) 29.0
 
March 29, 2020, 2 p.m. 2.6 ppb (2) 0.5 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) 4.9 μg/m3 (20) 24.0
 
March 29, 2020, 1 p.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 14.0 μg/m3 (13) 5.2 μg/m3 (22) 22.0
 
March 29, 2020, noon 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 29.0 ppb (22) N/A 11.0 μg/m3 (10) 5.1 μg/m3 (21) 22.0
 
March 29, 2020, 11 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 32.0 ppb (25) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 25.0
 
March 29, 2020, 10 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 11.0 μg/m3 (10) 3.3 μg/m3 (14) 27.0
 
March 29, 2020, 9 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 10.0 μg/m3 (9) 3.4 μg/m3 (14) 28.0
 
March 29, 2020, 8 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 40.0 ppb (31) N/A 9.0 μg/m3 (8) 2.8 μg/m3 (12) 31.0
 
March 29, 2020, 7 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 29.0
 
March 29, 2020, 6 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 11.0 μg/m3 (10) 2.2 μg/m3 (9) 26.0
 
March 29, 2020, 5 a.m. 0.7 ppb (1) 0.0 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) -1.1 μg/m3 (0) 26.0
 
March 29, 2020, 4 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 11.0 μg/m3 (10) 0.9 μg/m3 (4) 32.0
 
March 29, 2020, 3 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 6.0 μg/m3 (5) 4.2 μg/m3 (18) 36.0
 
March 29, 2020, 2 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 36.0
 
March 29, 2020, 1 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 35.0
 
March 29, 2020, midnight 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 12.0 μg/m3 (11) 5.0 μg/m3 (21) 35.0
 
March 28, 2020, 11 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 47.0 ppb (36) N/A 8.0 μg/m3 (7) 10.7 μg/m3 (45) 45.0
 
March 28, 2020, 10 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 6.0 ppb (9) 45.0 ppb (35) N/A 15.0 μg/m3 (14) 11.9 μg/m3 (50) 50.0
 
March 28, 2020, 9 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 7.0 ppb (10) 45.0 ppb (35) N/A 14.0 μg/m3 (13) 4.6 μg/m3 (19) 35.0
 
March 28, 2020, 8 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 46.0 ppb (35) N/A 6.0 μg/m3 (5) 2.4 μg/m3 (10) 35.0
 
March 28, 2020, 7 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 35.0
 
March 28, 2020, 6 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 3.0 μg/m3 (3) -0.5 μg/m3 (0) 34.0
 
March 28, 2020, 5 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 31.0
 
March 28, 2020, 4 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 29.0
 
March 28, 2020, 3 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 7.0 μg/m3 (6) 4.1 μg/m3 (17) 26.0
 
March 28, 2020, 2 p.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 7.0 μg/m3 (6) 3.5 μg/m3 (15) 19.0
 
March 28, 2020, 1 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
March 28, 2020, noon 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 8.0 μg/m3 (7) 0.9 μg/m3 (4) 18.0
 
March 28, 2020, 11 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 13.0 μg/m3 (12) 2.7 μg/m3 (11) 21.0
 
March 28, 2020, 10 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 8.0 μg/m3 (7) 5.4 μg/m3 (23) 25.0
 
March 28, 2020, 9 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 28.0
 
March 28, 2020, 8 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 30.0
 
March 28, 2020, 7 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A 11.0 μg/m3 (10) 3.2 μg/m3 (13) 32.0
 
March 28, 2020, 6 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 8.0 μg/m3 (7) 3.2 μg/m3 (13) 35.0
 
March 28, 2020, 5 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 8.0 μg/m3 (7) 2.2 μg/m3 (9) 33.0
 
March 28, 2020, 4 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 35.0
 
March 28, 2020, 3 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 12.0 μg/m3 (11) 2.5 μg/m3 (10) 35.0
 
March 28, 2020, 2 a.m. 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 9.0 μg/m3 (8) 0.2 μg/m3 (1) 36.0
 
March 28, 2020, 1 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 10.0 μg/m3 (9) 0.4 μg/m3 (2) 35.0
 
March 28, 2020, midnight 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 10.0 μg/m3 (9) 3.1 μg/m3 (13) 36.0
 
March 27, 2020, 11 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 37.0
 
March 27, 2020, 10 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 48.0 ppb (37) N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 37.0
 
March 27, 2020, 9 p.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 6.0 ppb (9) 46.0 ppb (35) N/A 9.0 μg/m3 (8) 3.9 μg/m3 (16) 35.0
 
March 27, 2020, 8 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 8.0 ppb (11) 43.0 ppb (33) N/A 9.0 μg/m3 (8) -0.5 μg/m3 (0) 33.0
 
March 27, 2020, 7 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 5.0 ppb (7) 40.0 ppb (31) N/A 9.0 μg/m3 (8) -3.0 μg/m3 (0) 31.0
 
March 27, 2020, 6 p.m. 4.5 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 10.0 ppb (14) 34.0 ppb (26) N/A 7.0 μg/m3 (6) -0.5 μg/m3 (0) 26.0
 
March 27, 2020, 5 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 5.0 ppb (7) 34.0 ppb (26) N/A 6.0 μg/m3 (5) 2.8 μg/m3 (12) 26.0
 
March 27, 2020, 4 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 4.0 ppb (6) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 3.4 μg/m3 (14) 24.0
 
March 27, 2020, 3 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 3.0 ppb (4) 27.0 ppb (21) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (7) 21.0
 
March 27, 2020, 2 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 18.0
 
March 27, 2020, 1 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 17.0
 
March 27, 2020, noon 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 15.0
 
March 27, 2020, 11 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 1.0 μg/m3 (1) 2.2 μg/m3 (9) 15.0
 
March 27, 2020, 10 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 2.0 μg/m3 (2) 2.3 μg/m3 (10) 14.0
 
March 27, 2020, 9 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 2.0 μg/m3 (2) 3.2 μg/m3 (13) 14.0
 
March 27, 2020, 8 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 3.0 μg/m3 (3) 4.7 μg/m3 (20) 20.0
 
March 27, 2020, 7 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 2.0 μg/m3 (2) 2.8 μg/m3 (12) 13.0
 
March 27, 2020, 6 a.m. 0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 15.0
 
March 27, 2020, 5 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 22.0 ppb (17) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 17.0
 
March 27, 2020, 4 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 4.0 μg/m3 (4) 3.3 μg/m3 (14) 18.0
 
March 27, 2020, 3 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 16.0
 
March 27, 2020, 2 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 2.1 μg/m3 (9) 18.0
 
March 27, 2020, 1 a.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 2.7 μg/m3 (11) 25.0
 
March 27, 2020, midnight 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 29.0
 
March 26, 2020, 11 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 5.0 μg/m3 (5) 3.5 μg/m3 (15) 31.0
 
March 26, 2020, 10 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 31.0
 
March 26, 2020, 9 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 4.0 μg/m3 (4) 5.4 μg/m3 (23) 29.0
 
March 26, 2020, 8 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 7.2 μg/m3 (30) 30.0
 
March 26, 2020, 7 p.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 4.0 μg/m3 (4) 7.1 μg/m3 (30) 30.0
 
March 26, 2020, 6 p.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 7.0 μg/m3 (6) 7.4 μg/m3 (31) 31.0
 
March 26, 2020, 5 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 9.0 μg/m3 (8) 7.5 μg/m3 (31) 31.0
 
March 26, 2020, 4 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 22.0
 
March 26, 2020, 3 p.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 23.0
 
March 26, 2020, 2 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 24.0
 
March 26, 2020, 1 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 23.0
 
March 26, 2020, noon 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 3.0 μg/m3 (3) 3.3 μg/m3 (14) 24.0
 
March 26, 2020, 11 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 4.0 μg/m3 (4) 6.5 μg/m3 (27) 27.0
 
March 26, 2020, 10 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 4.0 μg/m3 (4) 10.2 μg/m3 (42) 42.0
 
March 26, 2020, 9 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 5.0 μg/m3 (5) 2.9 μg/m3 (12) 14.0
 
March 26, 2020, 8 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 16.0
 
March 26, 2020, 7 a.m. 0.5 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 6.0 μg/m3 (5) 5.3 μg/m3 (22) 22.0
 
March 26, 2020, 6 a.m. 0.6 ppb (1) 0.0 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) 3.2 μg/m3 (13) 18.0
 
March 26, 2020, 5 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 18.0
 
March 26, 2020, 4 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 8.0 μg/m3 (7) 3.8 μg/m3 (16) 21.0
 
March 26, 2020, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 3.5 μg/m3 (15) 22.0
 
March 26, 2020, 2 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 22.0
 
March 26, 2020, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 3.0 ppb (4) 26.0 ppb (20) N/A 12.0 μg/m3 (11) 3.8 μg/m3 (16) 20.0
 
March 26, 2020, midnight 3.4 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 33.0 ppb (25) N/A 11.0 μg/m3 (10) 3.9 μg/m3 (16) 25.0
 
March 25, 2020, 11 p.m. 1.0 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 4.3 μg/m3 (18) 30.0
 
March 25, 2020, 10 p.m. 0.7 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) 6.8 μg/m3 (28) 30.0
 
March 25, 2020, 9 p.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 2.0 ppb (3) 38.0 ppb (29) N/A 8.0 μg/m3 (7) 5.8 μg/m3 (24) 29.0
 
March 25, 2020, 8 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 36.0 ppb (28) N/A 8.0 μg/m3 (7) 4.1 μg/m3 (17) 28.0
 
March 25, 2020, 7 p.m. 3.4 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 27.0
 
March 25, 2020, 6 p.m. 3.3 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 35.0 ppb (27) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 27.0
 
March 25, 2020, 5 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 34.0 ppb (26) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 26.0
 
March 25, 2020, 4 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 2.0 μg/m3 (2) 0.8 μg/m3 (3) 27.0
 
March 25, 2020, 3 p.m. 0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (12) 28.0
 
March 25, 2020, 2 p.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 3.0 μg/m3 (3) 4.1 μg/m3 (17) 28.0
 
March 25, 2020, 1 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 3.0 μg/m3 (3) 2.5 μg/m3 (10) 28.0
 
March 25, 2020, noon 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 26.0
 
March 25, 2020, 11 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (9) 26.0
 
March 25, 2020, 10 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 26.0
 
March 25, 2020, 9 a.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 2.0 μg/m3 (2) 4.5 μg/m3 (19) 26.0
 
March 25, 2020, 8 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 3.0 μg/m3 (3) 6.6 μg/m3 (28) 28.0