AQSQID: 380150003

Site Name: Bismarck Residential

Location: Bismarck (Bismarck Cathedral Area Historic Dist), ND

Reporting: True, Located: True

Current AQI: 30.0

Bismarck (Bismarck Cathedral Area Historic Dist) ND, US: 46.8253, -100.7681

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 3, 2020, 10 p.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 4.0 ppb (6) 39.0 ppb (30) 0.15 ppb (2) N/A 5.8 μg/m3 (24) 30.0
 
April 3, 2020, 9 p.m. 7.4 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A 4.0 ppb (6) 38.0 ppb (29) 0.14 ppb (2) N/A 5.7 μg/m3 (24) 29.0
 
April 3, 2020, 8 p.m. 11.8 ppb (11) 5.5 ppb (5) N/A 6.0 ppb (6) N/A 4.0 ppb (6) 34.0 ppb (26) 0.14 ppb (2) N/A 5.9 μg/m3 (25) 26.0
 
April 3, 2020, 7 p.m. 7.0 ppb (6) 3.6 ppb (3) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) 0.15 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
April 3, 2020, 6 p.m. 8.1 ppb (8) 4.7 ppb (4) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) 0.15 ppb (2) N/A 4.5 μg/m3 (19) 28.0
 
April 3, 2020, 5 p.m. 4.1 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
April 3, 2020, 4 p.m. 3.6 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.16 ppb (2) N/A 2.3 μg/m3 (10) 27.0
 
April 3, 2020, 3 p.m. 4.0 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) 0.15 ppb (2) N/A 3.3 μg/m3 (14) 25.0
 
April 3, 2020, 2 p.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.16 ppb (2) N/A 4.5 μg/m3 (19) 24.0
 
April 3, 2020, 1 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 3.2 μg/m3 (13) 23.0
 
April 3, 2020, noon 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 22.0
 
April 3, 2020, 11 a.m. 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.14 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
April 3, 2020, 10 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.14 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
April 3, 2020, 9 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.14 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
April 3, 2020, 8 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 4.3 μg/m3 (18) 24.0
 
April 3, 2020, 7 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 25.0
 
April 3, 2020, 6 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) 0.14 ppb (2) N/A 4.2 μg/m3 (18) 25.0
 
April 3, 2020, 5 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
April 3, 2020, 4 a.m. 3.0 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 31.0 ppb (24) 0.14 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
April 3, 2020, 3 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 29.0 ppb (22) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
April 3, 2020, 2 a.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 27.0 ppb (21) 0.05 ppb (1) N/A 4.8 μg/m3 (20) 21.0
 
April 3, 2020, 1 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) N/A 4.1 μg/m3 (17) 21.0
 
April 3, 2020, midnight 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 25.0 ppb (19) 0.17 ppb (2) N/A 2.4 μg/m3 (10) 19.0
 
April 2, 2020, 11 p.m. 4.3 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 26.0 ppb (20) 0.17 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
April 2, 2020, 10 p.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 26.0 ppb (20) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
April 2, 2020, 9 p.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) 0.17 ppb (2) N/A 3.4 μg/m3 (14) 19.0
 
April 2, 2020, 8 p.m. 4.2 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 7 p.m. 3.9 ppb (4) 1.6 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) 0.16 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
April 2, 2020, 6 p.m. 3.9 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) 0.16 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
April 2, 2020, 5 p.m. 3.4 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 25.0 ppb (19) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 19.0
 
April 2, 2020, 4 p.m. 3.7 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) 0.16 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
April 2, 2020, 3 p.m. 3.8 ppb (4) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 24.0 ppb (18) 0.16 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
April 2, 2020, 2 p.m. 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 23.0 ppb (18) 0.16 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
April 2, 2020, 1 p.m. 4.3 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 22.0 ppb (17) 0.16 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
April 2, 2020, noon 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.16 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
April 2, 2020, 11 a.m. 4.1 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.16 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
April 2, 2020, 10 a.m. 3.7 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.15 ppb (2) N/A 1.7 μg/m3 (7) 17.0
 
April 2, 2020, 9 a.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 21.0 ppb (16) 0.15 ppb (2) N/A 1.7 μg/m3 (7) 16.0
 
April 2, 2020, 8 a.m. 3.4 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.15 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
April 2, 2020, 7 a.m. 3.7 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
April 2, 2020, 6 a.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
April 2, 2020, 5 a.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
April 2, 2020, 4 a.m. 3.0 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
April 2, 2020, 3 a.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
April 2, 2020, 2 a.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.06 ppb (1) N/A 5.8 μg/m3 (24) 24.0
 
April 2, 2020, 1 a.m. 3.5 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 9.7 μg/m3 (40) 40.0
 
April 2, 2020, midnight 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
April 1, 2020, 11 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 8.4 μg/m3 (35) 35.0
 
April 1, 2020, 10 p.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
April 1, 2020, 9 p.m. 3.4 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
April 1, 2020, 8 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 1, 2020, 7 p.m. 2.5 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) 0.17 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
April 1, 2020, 6 p.m. 3.0 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (12) 0.17 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
April 1, 2020, 5 p.m. 5.7 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 16.0 ppb (12) 0.18 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
April 1, 2020, 4 p.m. 5.6 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.18 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
April 1, 2020, 3 p.m. 5.9 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 0.8 μg/m3 (3) 15.0
 
April 1, 2020, 2 p.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 1.2 μg/m3 (5) 15.0
 
April 1, 2020, 1 p.m. 9.1 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (12) 0.18 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
April 1, 2020, noon 5.3 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.17 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
April 1, 2020, 11 a.m. 4.8 ppb (4) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.17 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
April 1, 2020, 10 a.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) N/A 0.9 μg/m3 (4) 14.0
 
April 1, 2020, 9 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) N/A -0.7 μg/m3 (0) 15.0
 
April 1, 2020, 8 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 2.8 μg/m3 (12) 16.0
 
April 1, 2020, 7 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
April 1, 2020, 6 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) 0.17 ppb (2) N/A 3.2 μg/m3 (13) 15.0
 
April 1, 2020, 5 a.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
April 1, 2020, 4 a.m. 1.7 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 4.4 μg/m3 (18) 19.0
 
April 1, 2020, 3 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
April 1, 2020, 2 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.04 ppb (0) N/A 7.0 μg/m3 (29) 29.0
 
April 1, 2020, 1 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 4.2 μg/m3 (18) 24.0
 
April 1, 2020, midnight 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 6.4 μg/m3 (27) 28.0
 
March 31, 2020, 11 p.m. 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
March 31, 2020, 10 p.m. 2.3 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 31, 2020, 9 p.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) N/A 12.8 μg/m3 (52) 52.0
 
March 31, 2020, 8 p.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) N/A 10.4 μg/m3 (43) 43.0
 
March 31, 2020, 7 p.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
March 31, 2020, 6 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
March 31, 2020, 5 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A N/A 3.0
 
March 31, 2020, 4 p.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) N/A N/A 23.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A N/A 22.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.8 μg/m3 (16) 18.0
 
March 31, 2020, noon 4.9 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) N/A N/A 4.5 μg/m3 (19) 19.0
 
March 31, 2020, 11 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
March 31, 2020, 10 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 3.9 μg/m3 (16) 22.0
 
March 31, 2020, 9 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 2.8 μg/m3 (12) 23.0
 
March 31, 2020, 8 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 4.1 μg/m3 (17) 26.0
 
March 31, 2020, 7 a.m. 2.4 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 3.9 μg/m3 (16) 23.0
 
March 31, 2020, 6 a.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 3.4 μg/m3 (14) 22.0
 
March 31, 2020, 5 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 23.0
 
March 31, 2020, 4 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 5.1 μg/m3 (21) 23.0
 
March 31, 2020, 3 a.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
March 31, 2020, 2 a.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.05 ppb (1) N/A 10.4 μg/m3 (43) 43.0
 
March 31, 2020, 1 a.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 10.2 μg/m3 (42) 42.0
 
March 31, 2020, midnight 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 17.5 μg/m3 (62) 62.0
 
March 30, 2020, 11 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) N/A 37.4 μg/m3 (105) 105.0
 
March 30, 2020, 10 p.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) N/A 22.7 μg/m3 (73) 73.0
 
March 30, 2020, 9 p.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
March 30, 2020, 8 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
March 30, 2020, 7 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
March 30, 2020, 6 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 2.1 μg/m3 (9) 28.0
 
March 30, 2020, 5 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 1.7 μg/m3 (7) 27.0
 
March 30, 2020, 4 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 3.5 μg/m3 (15) 27.0
 
March 30, 2020, 3 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 27.0
 
March 30, 2020, 2 p.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
March 30, 2020, 1 p.m. 13.7 ppb (13) 2.6 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
March 30, 2020, noon 12.9 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (12) 0.19 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
March 30, 2020, 11 a.m. 7.9 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.17 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 30, 2020, 10 a.m. 3.5 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 0.9 μg/m3 (4) 20.0
 
March 30, 2020, 9 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) N/A -0.3 μg/m3 (0) 23.0
 
March 30, 2020, 8 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) N/A 0.8 μg/m3 (3) 25.0
 
March 30, 2020, 7 a.m. 1.7 ppb (2) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 1.7 μg/m3 (7) 25.0
 
March 30, 2020, 6 a.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 2.9 μg/m3 (12) 26.0
 
March 30, 2020, 5 a.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A 4.1 μg/m3 (17) 27.0
 
March 30, 2020, 4 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 26.0
 
March 30, 2020, 3 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 2.4 μg/m3 (10) 28.0
 
March 30, 2020, 2 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.05 ppb (1) N/A 6.4 μg/m3 (27) 27.0
 
March 30, 2020, 1 a.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
March 30, 2020, midnight 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) N/A 3.9 μg/m3 (16) 30.0
 
March 29, 2020, 11 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.17 ppb (2) N/A 1.6 μg/m3 (7) 31.0
 
March 29, 2020, 10 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 32.0
 
March 29, 2020, 9 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 2.9 μg/m3 (12) 33.0
 
March 29, 2020, 8 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 2.9 μg/m3 (12) 33.0
 
March 29, 2020, 7 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 33.0
 
March 29, 2020, 6 p.m. 2.3 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) N/A 3.5 μg/m3 (15) 33.0
 
March 29, 2020, 5 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) N/A 3.6 μg/m3 (15) 31.0
 
March 29, 2020, 4 p.m. 4.5 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 25.0
 
March 29, 2020, 3 p.m. 5.5 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 27.0 ppb (21) 0.18 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
March 29, 2020, 2 p.m. 8.1 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 29, 2020, 1 p.m. 15.1 ppb (14) 3.4 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (12) 0.26 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
March 29, 2020, noon 30.1 ppb (28) 6.3 ppb (6) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 5.0 ppb (4) 0.4 ppb (4) N/A 5.6 μg/m3 (23) 28.0
 
March 29, 2020, 11 a.m. 15.0 ppb (14) 0.9 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (8) 0.31 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
March 29, 2020, 10 a.m. 12.9 ppb (12) 0.4 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (14) 0.25 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
March 29, 2020, 9 a.m. 10.4 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) 0.26 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
March 29, 2020, 8 a.m. 7.5 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) N/A 6.8 μg/m3 (28) 28.0
 
March 29, 2020, 7 a.m. 5.4 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
March 29, 2020, 6 a.m. 8.6 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (18) 0.23 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
March 29, 2020, 5 a.m. 7.6 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.23 ppb (3) N/A 4.1 μg/m3 (17) 22.0
 
March 29, 2020, 4 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
March 29, 2020, 3 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
March 29, 2020, 2 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.06 ppb (1) N/A 6.6 μg/m3 (28) 28.0
 
March 29, 2020, 1 a.m. 5.6 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 36.0 ppb (28) 0.19 ppb (2) N/A 3.7 μg/m3 (15) 28.0
 
March 29, 2020, midnight 3.6 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) 0.17 ppb (2) N/A 4.9 μg/m3 (20) 32.0
 
March 28, 2020, 11 p.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A 5.6 μg/m3 (23) 32.0
 
March 28, 2020, 10 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
March 28, 2020, 9 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A 1.1 μg/m3 (5) 32.0
 
March 28, 2020, 8 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) 0.16 ppb (2) N/A 3.5 μg/m3 (15) 32.0
 
March 28, 2020, 7 p.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 30.0
 
March 28, 2020, 6 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) N/A 2.9 μg/m3 (12) 28.0
 
March 28, 2020, 5 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 25.0
 
March 28, 2020, 4 p.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
March 28, 2020, 3 p.m. 3.4 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) N/A 3.5 μg/m3 (15) 20.0
 
March 28, 2020, 2 p.m. 7.4 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
March 28, 2020, 1 p.m. 5.8 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 1.5 μg/m3 (6) 14.0
 
March 28, 2020, noon 7.2 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) N/A 2.3 μg/m3 (10) 12.0
 
March 28, 2020, 11 a.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.18 ppb (2) N/A 2.7 μg/m3 (11) 12.0
 
March 28, 2020, 10 a.m. 5.6 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 13.0
 
March 28, 2020, 9 a.m. 5.0 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 2.9 μg/m3 (12) 15.0
 
March 28, 2020, 8 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
March 28, 2020, 7 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
March 28, 2020, 6 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) N/A 3.4 μg/m3 (14) 19.0
 
March 28, 2020, 5 a.m. 3.5 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) N/A 2.8 μg/m3 (12) 22.0
 
March 28, 2020, 4 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
March 28, 2020, 3 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 2 a.m. 3.6 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.05 ppb (1) N/A 3.1 μg/m3 (13) 25.0
 
March 28, 2020, 1 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 1.7 μg/m3 (7) 27.0
 
March 28, 2020, midnight 3.6 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A 1.4 μg/m3 (6) 30.0
 
March 27, 2020, 11 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) 0.15 ppb (2) N/A 2.7 μg/m3 (11) 32.0