AQSQID: 270530962

Site Name: Minneapolis-Near Road

Location: Minneapolis (E 18th St), MN

Reporting: True, Located: True

Current AQI: 25.0

Minneapolis (E 18th St) MN, US: 44.9653, -93.2551

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 25.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.33 ppb (4) N/A 1.0 μg/m3 (4) 23.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.33 ppb (4) N/A 1.0 μg/m3 (4) 22.0
 
May 22, 2019, midnight 6.8 ppb (6) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.33 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
May 21, 2019, 11 p.m. 9.1 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
May 21, 2019, 10 p.m. 6.0 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.32 ppb (4) N/A -1.0 μg/m3 (0) 25.0
 
May 21, 2019, 9 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.35 ppb (4) N/A -2.0 μg/m3 (0) 25.0
 
May 21, 2019, 8 p.m. 8.5 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.34 ppb (4) N/A -1.0 μg/m3 (0) 23.0
 
May 21, 2019, 7 p.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 0.0 μg/m3 (0) 23.0
 
May 21, 2019, 6 p.m. 4.6 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.3 ppb (3) N/A -4.0 μg/m3 (0) 25.0
 
May 21, 2019, 5 p.m. 5.3 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.3 ppb (3) N/A -2.0 μg/m3 (0) 25.0
 
May 21, 2019, 4 p.m. 5.5 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 24.0
 
May 21, 2019, 3 p.m. 7.5 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.31 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
May 21, 2019, 2 p.m. 14.6 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 15.0
 
May 21, 2019, 1 p.m. 29.2 ppb (27) 12.2 ppb (11) N/A 17.0 ppb (16) N/A N/A 11.0 ppb (8) 0.41 ppb (5) N/A 2.0 μg/m3 (8) 27.0
 
May 21, 2019, noon 50.2 ppb (46) 28.5 ppb (26) N/A 22.0 ppb (20) N/A N/A 7.0 ppb (5) 0.51 ppb (6) N/A 4.0 μg/m3 (17) 46.0
 
May 21, 2019, 11 a.m. 52.9 ppb (49) 30.6 ppb (28) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 0.53 ppb (6) N/A 4.0 μg/m3 (17) 49.0
 
May 21, 2019, 10 a.m. 23.4 ppb (22) 9.2 ppb (9) N/A 14.0 ppb (13) N/A N/A 12.0 ppb (9) 0.38 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
May 21, 2019, 9 a.m. 16.5 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A 13.0 ppb (10) 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 8 a.m. 16.7 ppb (15) 3.0 ppb (3) N/A 14.0 ppb (13) N/A N/A 13.0 ppb (10) 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 21, 2019, 7 a.m. 27.5 ppb (25) 5.7 ppb (5) N/A 22.0 ppb (20) N/A N/A 6.0 ppb (5) 0.43 ppb (5) N/A 4.0 μg/m3 (17) 25.0
 
May 21, 2019, 6 a.m. 38.5 ppb (36) 10.8 ppb (10) N/A 28.0 ppb (26) N/A N/A 1.0 ppb (1) 0.55 ppb (6) N/A 6.0 μg/m3 (25) 36.0
 
May 21, 2019, 5 a.m. 34.4 ppb (32) 6.0 ppb (6) N/A 28.0 ppb (26) N/A N/A 1.0 ppb (1) 0.57 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
May 21, 2019, 4 a.m. 35.4 ppb (33) 7.5 ppb (7) N/A 28.0 ppb (26) N/A N/A 4.0 ppb (3) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 3 a.m. 32.0 ppb (30) 6.4 ppb (6) N/A 26.0 ppb (24) N/A N/A 6.0 ppb (5) 0.58 ppb (6) N/A 7.0 μg/m3 (29) 30.0
 
May 21, 2019, 2 a.m. 27.0 ppb (25) 6.8 ppb (6) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (11) 0.48 ppb (5) N/A 26.0 μg/m3 (80) 80.0
 
May 21, 2019, 1 a.m. 19.7 ppb (18) 5.2 ppb (5) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 21, 2019, midnight 19.5 ppb (18) 6.6 ppb (6) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) 0.45 ppb (5) N/A 21.0 μg/m3 (69) 69.0
 
May 20, 2019, 11 p.m. 11.4 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
May 20, 2019, 10 p.m. 11.9 ppb (11) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.36 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
May 20, 2019, 9 p.m. 17.0 ppb (16) 6.8 ppb (6) N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.39 ppb (4) N/A 2.0 μg/m3 (8) 21.0
 
May 20, 2019, 8 p.m. 23.6 ppb (22) 11.6 ppb (11) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 22.0
 
May 20, 2019, 7 p.m. 32.7 ppb (30) 16.3 ppb (15) N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) 0.45 ppb (5) N/A 4.0 μg/m3 (17) 30.0
 
May 20, 2019, 6 p.m. 23.9 ppb (22) 11.0 ppb (10) N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) 0.38 ppb (4) N/A 1.0 μg/m3 (4) 22.0
 
May 20, 2019, 5 p.m. 19.9 ppb (18) 9.4 ppb (9) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.38 ppb (4) N/A 2.0 μg/m3 (8) 19.0
 
May 20, 2019, 4 p.m. 32.9 ppb (30) 17.5 ppb (16) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 30.0
 
May 20, 2019, 3 p.m. 46.6 ppb (43) 28.4 ppb (26) N/A 18.0 ppb (17) N/A N/A 15.0 ppb (12) 0.46 ppb (5) N/A 2.0 μg/m3 (8) 43.0
 
May 20, 2019, 2 p.m. 70.5 ppb (68) 47.6 ppb (44) N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) 0.56 ppb (6) N/A 3.0 μg/m3 (12) 68.0
 
May 20, 2019, 1 p.m. 60.2 ppb (57) 37.7 ppb (35) N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) 0.55 ppb (6) N/A 6.0 μg/m3 (25) 57.0
 
May 20, 2019, noon 75.7 ppb (73) 49.9 ppb (46) N/A 26.0 ppb (24) N/A N/A 6.0 ppb (5) 0.66 ppb (7) N/A 8.0 μg/m3 (33) 73.0
 
May 20, 2019, 11 a.m. 72.1 ppb (69) 45.5 ppb (42) N/A 27.0 ppb (25) N/A N/A 4.0 ppb (3) 0.64 ppb (7) N/A 6.0 μg/m3 (25) 69.0
 
May 20, 2019, 10 a.m. 34.3 ppb (32) 16.7 ppb (15) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.43 ppb (5) N/A 2.0 μg/m3 (8) 32.0
 
May 20, 2019, 9 a.m. 14.6 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) 0.29 ppb (3) N/A -2.0 μg/m3 (0) 14.0
 
May 20, 2019, 8 a.m. 12.3 ppb (11) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) 0.3 ppb (3) N/A 0.0 μg/m3 (0) 14.0
 
May 20, 2019, 7 a.m. 9.7 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.28 ppb (3) N/A 0.0 μg/m3 (0) 16.0
 
May 20, 2019, 6 a.m. 8.9 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.29 ppb (3) N/A -1.0 μg/m3 (0) 17.0
 
May 20, 2019, 5 a.m. 12.1 ppb (11) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 4 a.m. 11.0 ppb (10) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.34 ppb (4) N/A 3.0 μg/m3 (12) 18.0
 
May 20, 2019, 3 a.m. 10.5 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.35 ppb (4) N/A -2.0 μg/m3 (0) 19.0
 
May 20, 2019, 2 a.m. 7.9 ppb (7) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 19.0
 
May 20, 2019, 1 a.m. 11.6 ppb (11) 4.9 ppb (5) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.36 ppb (4) N/A 2.0 μg/m3 (8) 17.0
 
May 20, 2019, midnight 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.35 ppb (4) N/A 3.0 μg/m3 (12) 18.0
 
May 19, 2019, 11 p.m. 12.0 ppb (11) 6.1 ppb (6) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.37 ppb (4) N/A 1.0 μg/m3 (4) 17.0
 
May 19, 2019, 10 p.m. 11.1 ppb (10) 5.6 ppb (5) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.37 ppb (4) N/A -1.0 μg/m3 (0) 17.0
 
May 19, 2019, 9 p.m. 11.0 ppb (10) 5.6 ppb (5) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.37 ppb (4) N/A -1.0 μg/m3 (0) 17.0
 
May 19, 2019, 8 p.m. 8.9 ppb (8) 4.7 ppb (4) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A -1.0 μg/m3 (0) 18.0
 
May 19, 2019, 7 p.m. 9.4 ppb (9) 4.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.4 ppb (4) N/A 2.0 μg/m3 (8) 18.0
 
May 19, 2019, 6 p.m. 10.6 ppb (10) 5.7 ppb (5) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 19, 2019, 5 p.m. 12.2 ppb (11) 6.3 ppb (6) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.41 ppb (5) N/A 0.0 μg/m3 (0) 16.0
 
May 19, 2019, 4 p.m. 11.0 ppb (10) 5.3 ppb (5) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.39 ppb (4) N/A -1.0 μg/m3 (0) 18.0
 
May 19, 2019, 3 p.m. 11.3 ppb (10) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.4 ppb (4) N/A 0.0 μg/m3 (0) 17.0
 
May 19, 2019, 2 p.m. 9.0 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.38 ppb (4) N/A 1.0 μg/m3 (4) 18.0
 
May 19, 2019, 1 p.m. 7.3 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 19.0
 
May 19, 2019, noon 7.7 ppb (7) 3.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.36 ppb (4) N/A 0.0 μg/m3 (0) 18.0
 
May 19, 2019, 11 a.m. 6.2 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.36 ppb (4) N/A 1.0 μg/m3 (4) 17.0
 
May 19, 2019, 10 a.m. 5.5 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 19, 2019, 9 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (21) 0.3 ppb (3) N/A 2.0 μg/m3 (8) 21.0
 
May 19, 2019, 8 a.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 0.0 μg/m3 (0) 23.0
 
May 19, 2019, 7 a.m. 3.2 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.32 ppb (4) N/A -1.0 μg/m3 (0) 24.0
 
May 19, 2019, 6 a.m. 4.6 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.34 ppb (4) N/A -2.0 μg/m3 (0) 22.0
 
May 19, 2019, 5 a.m. 7.2 ppb (7) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.36 ppb (4) N/A -2.0 μg/m3 (0) 20.0
 
May 19, 2019, 4 a.m. 7.7 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.36 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
May 19, 2019, 3 a.m. 6.7 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A -1.0 μg/m3 (0) 24.0
 
May 19, 2019, 2 a.m. 5.6 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.34 ppb (4) N/A -1.0 μg/m3 (0) 25.0
 
May 19, 2019, 1 a.m. 6.9 ppb (6) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 23.0
 
May 19, 2019, midnight 9.6 ppb (9) 3.8 ppb (4) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.4 ppb (4) N/A 3.0 μg/m3 (12) 23.0
 
May 18, 2019, 11 p.m. 10.1 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.4 ppb (4) N/A 4.0 μg/m3 (17) 22.0
 
May 18, 2019, 10 p.m. 10.1 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
May 18, 2019, 9 p.m. 10.6 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
May 18, 2019, 8 p.m. 9.4 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.39 ppb (4) N/A 4.0 μg/m3 (17) 21.0
 
May 18, 2019, 7 p.m. 10.5 ppb (10) 4.5 ppb (4) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.43 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
May 18, 2019, 6 p.m. 11.3 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.39 ppb (4) N/A 2.0 μg/m3 (8) 21.0
 
May 18, 2019, 5 p.m. 13.0 ppb (12) 5.4 ppb (5) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 18.0
 
May 18, 2019, 4 p.m. 14.7 ppb (14) 5.6 ppb (5) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.41 ppb (5) N/A 2.0 μg/m3 (8) 18.0
 
May 18, 2019, 3 p.m. 8.4 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 19.0
 
May 18, 2019, 2 p.m. 6.6 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 20.0
 
May 18, 2019, 1 p.m. 6.7 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.33 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
May 18, 2019, noon 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.32 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
May 18, 2019, 11 a.m. 8.2 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
May 18, 2019, 10 a.m. 6.2 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 19.0
 
May 18, 2019, 9 a.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 22.0
 
May 18, 2019, 8 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 25.0
 
May 18, 2019, 7 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 23.0
 
May 18, 2019, 6 a.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.32 ppb (4) N/A 3.0 μg/m3 (12) 23.0
 
May 18, 2019, 5 a.m. 3.4 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.35 ppb (4) N/A 3.0 μg/m3 (12) 21.0
 
May 18, 2019, 4 a.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 22.0
 
May 18, 2019, 3 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 25.0
 
May 18, 2019, 2 a.m. 7.3 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.33 ppb (4) N/A 4.0 μg/m3 (17) 27.0
 
May 18, 2019, 1 a.m. 6.8 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.35 ppb (4) N/A 3.0 μg/m3 (12) 27.0
 
May 18, 2019, midnight 6.5 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 29.0
 
May 17, 2019, 11 p.m. 6.5 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 30.0
 
May 17, 2019, 10 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 31.0
 
May 17, 2019, 9 p.m. 12.2 ppb (11) 3.6 ppb (3) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.37 ppb (4) N/A 2.0 μg/m3 (8) 28.0
 
May 17, 2019, 8 p.m. 11.9 ppb (11) 3.6 ppb (3) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.36 ppb (4) N/A 2.0 μg/m3 (8) 28.0
 
May 17, 2019, 7 p.m. 13.3 ppb (12) 4.1 ppb (4) N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) 0.36 ppb (4) N/A 3.0 μg/m3 (12) 26.0
 
May 17, 2019, 6 p.m. 13.1 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.37 ppb (4) N/A 1.0 μg/m3 (4) 25.0
 
May 17, 2019, 5 p.m. 8.6 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.33 ppb (4) N/A -2.0 μg/m3 (0) 24.0
 
May 17, 2019, 4 p.m. 8.2 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 23.0
 
May 17, 2019, 3 p.m. 23.3 ppb (22) 10.2 ppb (9) N/A 13.0 ppb (12) N/A N/A 24.0 ppb (18) 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 2 p.m. 24.1 ppb (22) 11.2 ppb (10) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 1 p.m. 43.3 ppb (40) 23.2 ppb (21) N/A 20.0 ppb (19) N/A N/A 15.0 ppb (12) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 40.0
 
May 17, 2019, noon 53.0 ppb (49) 28.3 ppb (26) N/A 25.0 ppb (23) N/A N/A 10.0 ppb (8) 0.57 ppb (6) N/A 5.0 μg/m3 (21) 49.0
 
May 17, 2019, 11 a.m. 48.7 ppb (45) 24.0 ppb (22) N/A 25.0 ppb (23) N/A N/A 10.0 ppb (8) 0.54 ppb (6) N/A 2.0 μg/m3 (8) 45.0
 
May 17, 2019, 10 a.m. 29.5 ppb (27) 11.2 ppb (10) N/A 18.0 ppb (17) N/A N/A 15.0 ppb (12) 0.46 ppb (5) N/A 4.0 μg/m3 (17) 27.0
 
May 17, 2019, 9 a.m. 9.6 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.33 ppb (4) N/A 4.0 μg/m3 (17) 19.0
 
May 17, 2019, 8 a.m. 10.3 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.33 ppb (4) N/A 3.0 μg/m3 (12) 18.0
 
May 17, 2019, 7 a.m. 10.0 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.34 ppb (4) N/A 3.0 μg/m3 (12) 20.0
 
May 17, 2019, 6 a.m. 9.1 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
May 17, 2019, 5 a.m. 6.6 ppb (6) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 24.0
 
May 17, 2019, 4 a.m. 7.0 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.34 ppb (4) N/A -3.0 μg/m3 (0) 25.0
 
May 17, 2019, 3 a.m. 8.5 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.35 ppb (4) N/A -1.0 μg/m3 (0) 22.0
 
May 17, 2019, 2 a.m. 12.1 ppb (11) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A 27.0 ppb (21) 0.42 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
May 17, 2019, 1 a.m. 15.4 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 23.0
 
May 17, 2019, midnight 16.7 ppb (15) 5.5 ppb (5) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.45 ppb (5) N/A 5.0 μg/m3 (21) 25.0
 
May 16, 2019, 11 p.m. 19.0 ppb (18) 6.7 ppb (6) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) 0.46 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 16, 2019, 10 p.m. 15.6 ppb (14) 4.8 ppb (4) N/A 11.0 ppb (10) N/A N/A 40.0 ppb (31) 0.45 ppb (5) N/A 7.0 μg/m3 (29) 31.0
 
May 16, 2019, 9 p.m. 19.9 ppb (18) 5.8 ppb (5) N/A 14.0 ppb (13) N/A N/A 40.0 ppb (31) 0.46 ppb (5) N/A 6.0 μg/m3 (25) 31.0
 
May 16, 2019, 8 p.m. 25.4 ppb (24) 7.8 ppb (7) N/A 18.0 ppb (17) N/A N/A 40.0 ppb (31) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 31.0
 
May 16, 2019, 7 p.m. 30.7 ppb (28) 9.4 ppb (9) N/A 21.0 ppb (19) N/A N/A 39.0 ppb (30) 0.52 ppb (6) N/A 7.0 μg/m3 (29) 30.0
 
May 16, 2019, 6 p.m. 31.7 ppb (29) 9.8 ppb (9) N/A 22.0 ppb (20) N/A N/A 37.0 ppb (28) 0.48 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 16, 2019, 5 p.m. 32.1 ppb (30) 10.6 ppb (10) N/A 21.0 ppb (19) N/A N/A 38.0 ppb (29) 0.48 ppb (5) N/A 5.0 μg/m3 (21) 30.0
 
May 16, 2019, 4 p.m. 34.8 ppb (32) 11.8 ppb (11) N/A 23.0 ppb (21) N/A N/A 35.0 ppb (27) 0.49 ppb (5) N/A 6.0 μg/m3 (25) 32.0
 
May 16, 2019, 3 p.m. 42.0 ppb (39) 17.2 ppb (16) N/A 25.0 ppb (23) N/A N/A 28.0 ppb (22) 0.54 ppb (6) N/A 8.0 μg/m3 (33) 39.0
 
May 16, 2019, 2 p.m. 63.0 ppb (60) 30.6 ppb (28) N/A 32.0 ppb (30) N/A N/A 18.0 ppb (14) 0.65 ppb (7) N/A 11.0 μg/m3 (46) 60.0
 
May 16, 2019, 1 p.m. 43.0 ppb (40) 18.9 ppb (18) N/A 24.0 ppb (22) N/A N/A 17.0 ppb (13) 0.66 ppb (7) N/A 9.0 μg/m3 (38) 40.0
 
May 16, 2019, noon 38.3 ppb (35) 15.2 ppb (14) N/A 23.0 ppb (21) N/A N/A 15.0 ppb (12) 0.63 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
May 16, 2019, 11 a.m. 23.0 ppb (21) 6.9 ppb (6) N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 16, 2019, 10 a.m. 6.8 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.46 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
May 16, 2019, 9 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.41 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
May 16, 2019, 8 a.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 33.0
 
May 16, 2019, 7 a.m. 2.6 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 37.0
 
May 16, 2019, 6 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.33 ppb (4) N/A 4.0 μg/m3 (17) 35.0
 
May 16, 2019, 5 a.m. 8.5 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.39 ppb (4) N/A 7.0 μg/m3 (29) 31.0
 
May 16, 2019, 4 a.m. 13.0 ppb (12) 0.5 ppb (0) N/A 13.0 ppb (12) N/A N/A 41.0 ppb (32) 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
May 16, 2019, 3 a.m. 10.0 ppb (9) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 47.0 ppb (36) 0.4 ppb (4) N/A 8.0 μg/m3 (33) 36.0
 
May 16, 2019, 2 a.m. 17.7 ppb (16) 0.8 ppb (1) N/A 17.0 ppb (16) N/A N/A 43.0 ppb (33) 0.47 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
May 16, 2019, 1 a.m. 12.8 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A 50.0 ppb (38) 0.45 ppb (5) N/A 5.0 μg/m3 (21) 38.0
 
May 16, 2019, midnight 8.5 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 58.0 ppb (45) 0.36 ppb (4) N/A 7.0 μg/m3 (29) 45.0
 
May 15, 2019, 11 p.m. 6.5 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 62.0 ppb (48) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 48.0
 
May 15, 2019, 10 p.m. 7.9 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 62.0 ppb (48) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 48.0
 
May 15, 2019, 9 p.m. 8.9 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 58.0 ppb (45) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 45.0
 
May 15, 2019, 8 p.m. 6.6 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 58.0 ppb (45) 0.31 ppb (3) N/A 3.0 μg/m3 (12) 45.0
 
May 15, 2019, 7 p.m. 10.4 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) 0.33 ppb (4) N/A 1.0 μg/m3 (4) 39.0
 
May 15, 2019, 6 p.m. 24.4 ppb (23) 7.6 ppb (7) N/A 17.0 ppb (16) N/A N/A 41.0 ppb (32) 0.36 ppb (4) N/A 1.0 μg/m3 (4) 32.0
 
May 15, 2019, 5 p.m. 24.0 ppb (22) 9.4 ppb (9) N/A 15.0 ppb (14) N/A N/A 37.0 ppb (28) 0.37 ppb (4) N/A 3.0 μg/m3 (12) 28.0
 
May 15, 2019, 4 p.m. 37.8 ppb (35) 16.0 ppb (15) N/A 22.0 ppb (20) N/A N/A 29.0 ppb (22) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 35.0
 
May 15, 2019, 3 p.m. 45.7 ppb (42) 21.6 ppb (20) N/A 24.0 ppb (22) N/A N/A 22.0 ppb (17) 0.46 ppb (5) N/A 8.0 μg/m3 (33) 42.0
 
May 15, 2019, 2 p.m. 48.7 ppb (45) 23.1 ppb (21) N/A 26.0 ppb (24) N/A N/A 19.0 ppb (15) 0.5 ppb (6) N/A 6.0 μg/m3 (25) 45.0
 
May 15, 2019, 1 p.m. 54.2 ppb (50) 28.7 ppb (27) N/A 26.0 ppb (24) N/A N/A 15.0 ppb (12) 0.58 ppb (6) N/A 7.0 μg/m3 (29) 50.0
 
May 15, 2019, noon 51.5 ppb (48) 25.9 ppb (24) N/A 26.0 ppb (24) N/A N/A 13.0 ppb (10) 0.59 ppb (7) N/A 8.0 μg/m3 (33) 48.0
 
May 15, 2019, 11 a.m. 40.9 ppb (38) 18.3 ppb (17) N/A 23.0 ppb (21) N/A N/A 15.0 ppb (12) 0.58 ppb (6) N/A 8.0 μg/m3 (33) 38.0
 
May 15, 2019, 10 a.m. 38.0 ppb (35) 14.5 ppb (13) N/A 24.0 ppb (22) N/A N/A 12.0 ppb (9) 0.51 ppb (6) N/A 8.0 μg/m3 (33) 35.0
 
May 15, 2019, 9 a.m. 13.2 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 18.0 ppb (14) 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 15, 2019, 8 a.m. 7.7 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
May 15, 2019, 7 a.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.37 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 15, 2019, 6 a.m. 11.8 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 5 a.m. 15.3 ppb (14) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 4 a.m. 10.2 ppb (9) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.44 ppb (5) N/A 5.0 μg/m3 (21) 23.0