AQSQID: 401091037

Site Name: North Okc

Location: Oklahoma City (Neast 140th St), OK

Reporting: True, Located: True

Current AQI: 50.0

Oklahoma City (Neast 140th St) OK, US: 35.612801, -97.472198

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) 24.0 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
March 22, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 25.0 μg/m3 (23) 12.3 μg/m3 (51) 51.0
 
March 22, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 24.0 μg/m3 (22) 12.4 μg/m3 (51) 51.0
 
March 22, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) 0.2 ppb (2) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
March 22, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) 0.2 ppb (2) 21.0 μg/m3 (19) 13.2 μg/m3 (53) 53.0
 
March 22, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) 0.2 ppb (2) 31.0 μg/m3 (28) 16.2 μg/m3 (59) 59.0
 
March 22, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.2 ppb (2) 29.0 μg/m3 (26) 15.3 μg/m3 (57) 57.0
 
March 22, 2019, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.2 ppb (2) 28.0 μg/m3 (25) 17.4 μg/m3 (61) 61.0
 
March 22, 2019, 3 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.2 ppb (2) 31.0 μg/m3 (28) 15.8 μg/m3 (58) 58.0
 
March 22, 2019, 2 p.m. 29.0 ppb (27) 9.0 ppb (8) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) 38.0 μg/m3 (35) 30.1 μg/m3 (89) 89.0
 
March 22, 2019, 1 p.m. 32.0 ppb (30) 9.0 ppb (8) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 12.0 ppb (9) 0.4 ppb (4) 38.0 μg/m3 (35) 36.5 μg/m3 (102) 102.0
 
March 22, 2019, noon 27.0 ppb (25) 5.0 ppb (5) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 10.0 ppb (8) 0.3 ppb (3) 18.0 μg/m3 (16) 14.1 μg/m3 (54) 54.0
 
March 22, 2019, 11 a.m. 35.0 ppb (32) 14.0 ppb (13) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 0.0 ppb (0) 0.3 ppb (3) 17.0 μg/m3 (15) 7.1 μg/m3 (30) 32.0
 
March 22, 2019, 10 a.m. 26.0 ppb (24) 7.0 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) 17.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
March 22, 2019, 9 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
March 22, 2019, 8 a.m. 23.0 ppb (21) 4.0 ppb (4) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 5.0 ppb (4) 0.3 ppb (3) 15.0 μg/m3 (14) 7.1 μg/m3 (30) 30.0
 
March 22, 2019, 7 a.m. 22.0 ppb (20) 1.0 ppb (1) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
March 22, 2019, 6 a.m. 23.0 ppb (21) 2.0 ppb (2) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (4) 18.0 μg/m3 (16) 6.4 μg/m3 (27) 27.0
 
March 22, 2019, 5 a.m. 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (15) 0.3 ppb (3) 19.0 μg/m3 (17) 6.8 μg/m3 (28) 28.0
 
March 22, 2019, 4 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 21.0 μg/m3 (19) 8.9 μg/m3 (37) 37.0
 
March 22, 2019, 3 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) 21.0 μg/m3 (19) 8.7 μg/m3 (36) 36.0
 
March 22, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 21.0 μg/m3 (19) 5.2 μg/m3 (22) 27.0
 
March 22, 2019, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 13.0 μg/m3 (12) 4.3 μg/m3 (18) 30.0
 
March 22, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 11.0 μg/m3 (10) 4.1 μg/m3 (17) 35.0
 
March 21, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 10.0 μg/m3 (9) 5.6 μg/m3 (23) 38.0
 
March 21, 2019, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) 8.0 μg/m3 (7) 2.9 μg/m3 (12) 36.0
 
March 21, 2019, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) 2.0 μg/m3 (2) 3.3 μg/m3 (14) 35.0
 
March 21, 2019, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 6.0 μg/m3 (5) 5.2 μg/m3 (22) 38.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 36.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (7) 5.6 μg/m3 (23) 23.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
March 21, 2019, 3 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 17.0 μg/m3 (15) 10.2 μg/m3 (42) 42.0
 
March 21, 2019, 2 p.m. 14.0 ppb (13) 5.0 ppb (5) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) 0.3 ppb (3) 23.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 1 p.m. 27.0 ppb (25) 8.0 ppb (7) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 11.0 ppb (8) 0.3 ppb (3) 25.0 μg/m3 (23) 11.4 μg/m3 (48) 48.0
 
March 21, 2019, noon 26.0 ppb (24) 3.0 ppb (3) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 5.0 ppb (4) 0.3 ppb (3) 23.0 μg/m3 (21) 10.2 μg/m3 (42) 42.0
 
March 21, 2019, 11 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) 20.0 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
March 21, 2019, 10 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 9 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 8 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 7 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 19.0 μg/m3 (17) 9.7 μg/m3 (40) 40.0
 
March 21, 2019, 6 a.m. 24.0 ppb (22) 0.0 ppb (0) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 19.0 ppb (15) 0.3 ppb (3) 20.0 μg/m3 (18) 12.9 μg/m3 (52) 52.0
 
March 21, 2019, 5 a.m. 28.0 ppb (26) 0.0 ppb (0) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 16.0 ppb (12) 0.4 ppb (4) 22.0 μg/m3 (20) 13.9 μg/m3 (54) 54.0
 
March 21, 2019, 4 a.m. 31.0 ppb (29) 0.0 ppb (0) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 10.0 ppb (8) 0.5 ppb (6) 23.0 μg/m3 (21) 11.1 μg/m3 (46) 46.0
 
March 21, 2019, 3 a.m. 22.0 ppb (20) 0.0 ppb (0) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 16.0 ppb (12) 0.4 ppb (4) 22.0 μg/m3 (20) 7.2 μg/m3 (30) 30.0
 
March 21, 2019, 2 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 24.0 ppb (18) 0.3 ppb (3) 16.0 μg/m3 (15) 4.9 μg/m3 (20) 20.0
 
March 21, 2019, 1 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) 14.0 μg/m3 (13) 4.6 μg/m3 (19) 29.0
 
March 21, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.1 ppb (1) 10.0 μg/m3 (9) 4.3 μg/m3 (18) 39.0
 
March 20, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 42.0
 
March 20, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 7.0 μg/m3 (6) 5.5 μg/m3 (23) 42.0
 
March 20, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 9.0 μg/m3 (8) 5.3 μg/m3 (22) 41.0
 
March 20, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 4.0 μg/m3 (4) 6.0 μg/m3 (25) 41.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 7.0 μg/m3 (6) 7.4 μg/m3 (31) 40.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) 6.0 μg/m3 (5) 8.4 μg/m3 (35) 38.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) 3.0 μg/m3 (3) 8.2 μg/m3 (34) 36.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 6.0 μg/m3 (5) 7.8 μg/m3 (32) 35.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 5.0 μg/m3 (5) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 10.0 μg/m3 (9) 12.6 μg/m3 (51) 51.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) 9.0 μg/m3 (8) 13.8 μg/m3 (54) 54.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) 8.0 μg/m3 (7) 14.9 μg/m3 (56) 56.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) 12.0 μg/m3 (11) 14.9 μg/m3 (56) 56.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) 10.0 μg/m3 (9) 14.9 μg/m3 (56) 56.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) 7.0 μg/m3 (6) 15.1 μg/m3 (57) 57.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) 13.0 μg/m3 (12) 15.8 μg/m3 (58) 58.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) 13.0 μg/m3 (12) 15.4 μg/m3 (57) 57.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) 14.0 μg/m3 (13) 13.1 μg/m3 (52) 52.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) 15.0 μg/m3 (14) 11.1 μg/m3 (46) 46.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 16.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 20.0 μg/m3 (18) 6.4 μg/m3 (27) 30.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 25.0 μg/m3 (23) 6.4 μg/m3 (27) 28.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 40.0 μg/m3 (36) 8.1 μg/m3 (34) 36.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.2 ppb (2) 21.0 μg/m3 (19) 8.8 μg/m3 (37) 41.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (45) 0.2 ppb (2) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 45.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.2 ppb (2) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 46.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) 0.2 ppb (2) 22.0 μg/m3 (20) 9.1 μg/m3 (38) 46.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 26.0 μg/m3 (24) 8.9 μg/m3 (37) 45.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 25.0 μg/m3 (23) 8.7 μg/m3 (36) 45.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 23.0 μg/m3 (21) 9.3 μg/m3 (39) 45.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (44) 0.2 ppb (2) 30.0 μg/m3 (27) 10.5 μg/m3 (44) 44.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.2 ppb (2) 35.0 μg/m3 (32) 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) 27.0 μg/m3 (25) 12.7 μg/m3 (51) 51.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.3 ppb (3) 33.0 μg/m3 (30) 17.2 μg/m3 (61) 61.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.5 ppb (6) 45.0 μg/m3 (41) 24.5 μg/m3 (77) 77.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.3 ppb (3) 32.0 μg/m3 (29) 18.8 μg/m3 (64) 64.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 22.0 μg/m3 (20) 14.4 μg/m3 (55) 55.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) 20.0 μg/m3 (18) 14.8 μg/m3 (56) 56.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) 22.0 μg/m3 (20) 13.7 μg/m3 (54) 54.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 21.0 μg/m3 (19) 13.6 μg/m3 (53) 53.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) 23.0 μg/m3 (21) 13.7 μg/m3 (54) 54.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.3 ppb (3) 22.0 μg/m3 (20) 14.4 μg/m3 (55) 55.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) 30.0 μg/m3 (27) 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.3 ppb (3) 29.0 μg/m3 (26) 12.1 μg/m3 (50) 50.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 22.0 μg/m3 (20) 10.7 μg/m3 (45) 45.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.2 ppb (2) 20.0 μg/m3 (18) 11.7 μg/m3 (49) 49.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 64.0 ppb (49) 0.2 ppb (2) 22.0 μg/m3 (20) 11.3 μg/m3 (47) 49.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 70.0 ppb (54) 0.2 ppb (2) 23.0 μg/m3 (21) 12.2 μg/m3 (50) 54.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 70.0 ppb (54) 0.2 ppb (2) 22.0 μg/m3 (20) 15.2 μg/m3 (57) 57.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 66.0 ppb (51) 0.2 ppb (2) 28.0 μg/m3 (25) 19.7 μg/m3 (66) 66.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (48) 0.2 ppb (2) 27.0 μg/m3 (25) 21.2 μg/m3 (70) 70.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.2 ppb (2) 20.0 μg/m3 (18) 17.4 μg/m3 (61) 61.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (44) 0.2 ppb (2) 17.0 μg/m3 (15) 12.6 μg/m3 (51) 51.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.2 ppb (2) 16.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) 11.0 μg/m3 (10) 11.7 μg/m3 (49) 49.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 24.0 μg/m3 (22) 14.9 μg/m3 (56) 56.0
 
March 18, 2019, 2 p.m. 16.0 ppb (15) 4.0 ppb (4) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (21) 0.3 ppb (3) 26.0 μg/m3 (24) 16.2 μg/m3 (59) 59.0
 
March 18, 2019, 1 p.m. 35.0 ppb (32) 15.0 ppb (14) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 12.0 ppb (9) 0.4 ppb (4) 32.0 μg/m3 (29) 13.9 μg/m3 (54) 54.0
 
March 18, 2019, noon 46.0 ppb (43) 23.0 ppb (21) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 0.0 ppb (0) 0.5 ppb (6) 32.0 μg/m3 (29) 12.7 μg/m3 (51) 51.0
 
March 18, 2019, 11 a.m. 22.0 ppb (20) 3.0 ppb (3) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 7.0 ppb (5) 0.3 ppb (3) 24.0 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
March 18, 2019, 10 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) 21.0 μg/m3 (19) 11.7 μg/m3 (49) 49.0
 
March 18, 2019, 9 a.m. 14.0 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) 21.0 μg/m3 (19) 13.7 μg/m3 (54) 54.0
 
March 18, 2019, 8 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) 21.0 μg/m3 (19) 13.7 μg/m3 (54) 54.0
 
March 18, 2019, 7 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) 19.0 μg/m3 (17) 11.6 μg/m3 (48) 48.0
 
March 18, 2019, 6 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 5 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 19.0 μg/m3 (17) 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 4 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 21.0 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
March 18, 2019, 3 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 33.0 ppb (25) 0.3 ppb (3) 22.0 μg/m3 (20) 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 2 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 18.0 μg/m3 (16) 7.5 μg/m3 (31) 31.0
 
March 18, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) 17.0 μg/m3 (15) 7.1 μg/m3 (30) 36.0
 
March 18, 2019, midnight 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.2 ppb (2) 13.0 μg/m3 (12) 5.7 μg/m3 (24) 41.0
 
March 17, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 42.0
 
March 17, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 12.0 μg/m3 (11) 4.6 μg/m3 (19) 42.0
 
March 17, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 42.0
 
March 17, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 10.0 μg/m3 (9) 4.8 μg/m3 (20) 42.0
 
March 17, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 42.0
 
March 17, 2019, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 7.0 μg/m3 (6) 4.2 μg/m3 (18) 40.0
 
March 17, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) 9.0 μg/m3 (8) 5.1 μg/m3 (21) 38.0
 
March 17, 2019, 4 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 11.0 μg/m3 (10) 6.2 μg/m3 (26) 32.0
 
March 17, 2019, 3 p.m. 14.0 ppb (13) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 10.0 μg/m3 (9) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 2 p.m. 30.0 ppb (28) 10.0 ppb (9) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 20.0 ppb (15) 0.3 ppb (3) 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
March 17, 2019, 1 p.m. 39.0 ppb (36) 15.0 ppb (14) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 6.0 ppb (5) 0.4 ppb (4) 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
March 17, 2019, noon 28.0 ppb (26) 2.0 ppb (2) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 4.0 ppb (3) 0.4 ppb (4) 22.0 μg/m3 (20) 15.1 μg/m3 (57) 57.0
 
March 17, 2019, 11 a.m. 24.0 ppb (22) 1.0 ppb (1) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 7.0 ppb (5) 0.3 ppb (3) 20.0 μg/m3 (18) 13.9 μg/m3 (54) 54.0
 
March 17, 2019, 10 a.m. 18.0 ppb (17) 0.0 ppb (0) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (11) 0.3 ppb (3) 17.0 μg/m3 (15) 12.4 μg/m3 (51) 51.0
 
March 17, 2019, 9 a.m. 14.0 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 17.0 ppb (13) 0.3 ppb (3) 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
March 17, 2019, 8 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
March 17, 2019, 7 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 25.0 ppb (19) 0.3 ppb (3) 16.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
March 17, 2019, 6 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (21) 0.3 ppb (3) 16.0 μg/m3 (15) 8.7 μg/m3 (36) 36.0
 
March 17, 2019, 5 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) 16.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
March 17, 2019, 4 a.m. 17.0 ppb (16) 0.0 ppb (0) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 25.0 ppb (19) 0.3 ppb (3) 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
March 17, 2019, 3 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 21.0 ppb (16) 0.3 ppb (3) 18.0 μg/m3 (16) 9.2 μg/m3 (38) 38.0
 
March 17, 2019, 2 a.m. 14.0 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 29.0 ppb (22) 0.3 ppb (3) 19.0 μg/m3 (17) 6.6 μg/m3 (28) 28.0
 
March 17, 2019, 1 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 13.0 μg/m3 (12) 5.8 μg/m3 (24) 32.0
 
March 17, 2019, midnight 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) 12.0 μg/m3 (11) 5.8 μg/m3 (24) 41.0
 
March 16, 2019, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 12.0 μg/m3 (11) 6.2 μg/m3 (26) 43.0
 
March 16, 2019, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) 0.1 ppb (1) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 44.0
 
March 16, 2019, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 9.0 μg/m3 (8) 5.7 μg/m3 (24) 43.0
 
March 16, 2019, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) 0.1 ppb (1) 8.0 μg/m3 (7) 6.1 μg/m3 (25) 43.0
 
March 16, 2019, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) 0.1 ppb (1) 6.0 μg/m3 (5) 5.8 μg/m3 (24) 42.0
 
March 16, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) 6.0 μg/m3 (5) 4.8 μg/m3 (20) 40.0
 
March 16, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 6.0 μg/m3 (5) 3.9 μg/m3 (16) 37.0
 
March 16, 2019, 4 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) 8.0 μg/m3 (7) 3.8 μg/m3 (16) 33.0
 
March 16, 2019, 3 p.m. 14.0 ppb (13) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) 6.0 μg/m3 (5) 4.4 μg/m3 (18) 28.0
 
March 16, 2019, 2 p.m. 30.0 ppb (28) 11.0 ppb (10) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 21.0 ppb (16) 0.3 ppb (3) 13.0 μg/m3 (12) 5.8 μg/m3 (24) 28.0
 
March 16, 2019, 1 p.m. 49.0 ppb (45) 23.0 ppb (21) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 5.0 ppb (4) 0.6 ppb (7) 21.0 μg/m3 (19) 6.8 μg/m3 (28) 45.0
 
March 16, 2019, noon 44.0 ppb (41) 8.0 ppb (7) N/A 36.0 ppb (33) N/A 0.0 ppb (0) 1.0 ppb (1) 0.4 ppb (4) 15.0 μg/m3 (14) 6.8 μg/m3 (28) 41.0
 
March 16, 2019, 11 a.m. 32.0 ppb (30) 2.0 ppb (2) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 3.0 ppb (2) 0.4 ppb (4) 12.0 μg/m3 (11) 5.9 μg/m3 (25) 30.0
 
March 16, 2019, 10 a.m. 23.0 ppb (21) 0.0 ppb (0) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 7.0 ppb (5) 0.3 ppb (3) 7.0 μg/m3 (6) 5.1 μg/m3 (21) 21.0
 
March 16, 2019, 9 a.m. 20.0 ppb (19) 0.0 ppb (0) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 5.0 ppb (4) 0.3 ppb (3) 10.0 μg/m3 (9) 4.9 μg/m3 (20) 20.0
 
March 16, 2019, 8 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 17.0 ppb (13) 0.3 ppb (3) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
March 16, 2019, 7 a.m. 25.0 ppb (23) 2.0 ppb (2) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 5.0 ppb (4) 0.4 ppb (4) 8.0 μg/m3 (7) 5.5 μg/m3 (23) 23.0
 
March 16, 2019, 6 a.m. 26.0 ppb (24) 1.0 ppb (1) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) 16.0 μg/m3 (15) 8.1 μg/m3 (34) 34.0
 
March 16, 2019, 5 a.m. 26.0 ppb (24) 0.0 ppb (0) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 7.0 ppb (5) 0.3 ppb (3) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
March 16, 2019, 4 a.m. 18.0 ppb (17) 0.0 ppb (0) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 14.0 ppb (11) 0.3 ppb (3) 16.0 μg/m3 (15) 5.1 μg/m3 (21) 21.0
 
March 16, 2019, 3 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 23.0
 
March 16, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 12.0 μg/m3 (11) 4.2 μg/m3 (18) 27.0
 
March 16, 2019, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 30.0
 
March 16, 2019, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) 7.0 μg/m3 (6) 2.4 μg/m3 (10) 35.0