AQSQID: 490494001

Site Name: Lindon - Provo

Location: Lindon, UT

Reporting: True, Located: True

Current AQI: 41.0

Lindon UT, US: 40.3414, -111.7136

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 26, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.0 ppb (0) N/A 4.7 μg/m3 (20) 41.0
 
March 26, 2019, 6 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 45.0 ppb (35) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 35.0
 
March 26, 2019, 5 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A 7.6 μg/m3 (32) 32.0
 
March 26, 2019, 4 p.m. 22.0 ppb (20) 7.0 ppb (6) N/A 16.0 ppb (15) N/A N/A 36.0 ppb (28) 0.2 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
March 26, 2019, 3 p.m. 21.0 ppb (19) 6.0 ppb (6) N/A 15.0 ppb (14) N/A N/A 32.0 ppb (25) 0.2 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
March 26, 2019, 2 p.m. 58.0 ppb (54) 23.0 ppb (21) N/A 35.0 ppb (32) N/A N/A 8.0 ppb (6) 0.5 ppb (6) N/A 11.3 μg/m3 (47) 54.0
 
March 26, 2019, 1 p.m. 42.0 ppb (39) 11.0 ppb (10) N/A 32.0 ppb (30) N/A N/A 8.0 ppb (6) 0.4 ppb (4) N/A 7.1 μg/m3 (30) 39.0
 
March 26, 2019, noon 26.0 ppb (24) 3.0 ppb (3) N/A 23.0 ppb (21) N/A N/A 12.0 ppb (9) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
March 26, 2019, 11 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A 6.1 μg/m3 (25) 25.0
 
March 26, 2019, 10 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
March 26, 2019, 9 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A 6.7 μg/m3 (28) 28.0
 
March 26, 2019, 8 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A 7.7 μg/m3 (32) 32.0
 
March 26, 2019, 7 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A 9.6 μg/m3 (40) 40.0
 
March 26, 2019, 6 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A 10.4 μg/m3 (43) 43.0
 
March 26, 2019, 5 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
March 26, 2019, 4 a.m. 17.0 ppb (16) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
March 26, 2019, 3 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 8.2 μg/m3 (34) 34.0
 
March 26, 2019, 2 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 35.0 ppb (27) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 26, 2019, 1 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A 9.8 μg/m3 (41) 41.0
 
March 26, 2019, midnight 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) 0.1 ppb (1) N/A 7.1 μg/m3 (30) 39.0
 
March 25, 2019, 11 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) 0.1 ppb (1) N/A 6.9 μg/m3 (29) 39.0
 
March 25, 2019, 10 p.m. 12.0 ppb (11) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A 9.7 μg/m3 (40) 40.0
 
March 25, 2019, 9 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A 10.5 μg/m3 (44) 44.0
 
March 25, 2019, 8 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
March 25, 2019, 7 p.m. 16.0 ppb (15) 6.0 ppb (6) N/A 11.0 ppb (10) N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A 10.2 μg/m3 (42) 42.0
 
March 25, 2019, 6 p.m. 20.0 ppb (19) 8.0 ppb (7) N/A 13.0 ppb (12) N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
March 25, 2019, 5 p.m. 24.0 ppb (22) 10.0 ppb (9) N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A 10.9 μg/m3 (45) 45.0
 
March 25, 2019, 4 p.m. 18.0 ppb (17) 7.0 ppb (6) N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A 8.4 μg/m3 (35) 35.0
 
March 25, 2019, 3 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 7.3 μg/m3 (30) 30.0
 
March 25, 2019, 2 p.m. 39.0 ppb (36) 16.0 ppb (15) N/A 23.0 ppb (21) N/A N/A 12.0 ppb (9) 0.4 ppb (4) N/A 11.3 μg/m3 (47) 47.0
 
March 25, 2019, 1 p.m. 43.0 ppb (40) 13.0 ppb (12) N/A 30.0 ppb (28) N/A N/A 3.0 ppb (2) 0.5 ppb (6) N/A 7.6 μg/m3 (32) 40.0
 
March 25, 2019, noon 23.0 ppb (21) 2.0 ppb (2) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2019, 11 a.m. 20.0 ppb (19) 2.0 ppb (2) N/A 18.0 ppb (17) N/A N/A 12.0 ppb (9) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2019, 10 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A 4.6 μg/m3 (19) 19.0
 
March 25, 2019, 9 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A 4.9 μg/m3 (20) 20.0
 
March 25, 2019, 8 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 18.0
 
March 25, 2019, 7 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.1 ppb (1) N/A 5.7 μg/m3 (24) 24.0
 
March 25, 2019, 6 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A 5.6 μg/m3 (23) 23.0
 
March 25, 2019, 5 a.m. 15.0 ppb (14) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
March 25, 2019, 4 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
March 25, 2019, 3 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 12.3 μg/m3 (51) 51.0
 
March 25, 2019, 2 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.1 ppb (1) N/A 6.4 μg/m3 (27) 27.0
 
March 25, 2019, 1 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 28.0
 
March 25, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 35.0
 
March 24, 2019, 11 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 4.6 μg/m3 (19) 35.0
 
March 24, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 3.7 μg/m3 (15) 35.0
 
March 24, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 35.0
 
March 24, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 32.0
 
March 24, 2019, 7 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 30.0
 
March 24, 2019, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 27.0
 
March 24, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 30.0
 
March 24, 2019, 4 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 29.0
 
March 24, 2019, 3 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.0 ppb (0) N/A 0.6 μg/m3 (2) 26.0
 
March 24, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 27.0
 
March 24, 2019, 1 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 28.0
 
March 24, 2019, noon 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 32.0
 
March 24, 2019, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 0.7 μg/m3 (3) 33.0
 
March 24, 2019, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 28.0
 
March 24, 2019, 9 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 27.0
 
March 24, 2019, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 23.0
 
March 24, 2019, 7 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A 2.0 μg/m3 (8) 25.0
 
March 24, 2019, 6 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A 2.3 μg/m3 (10) 25.0
 
March 24, 2019, 5 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 28.0
 
March 24, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 30.0
 
March 24, 2019, 3 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 29.0
 
March 24, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 30.0
 
March 24, 2019, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 32.0
 
March 24, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 33.0
 
March 23, 2019, 11 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 34.0
 
March 23, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 35.0
 
March 23, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 34.0
 
March 23, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 2.4 μg/m3 (10) 34.0
 
March 23, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 3.9 μg/m3 (16) 32.0
 
March 23, 2019, 6 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.0 ppb (0) N/A 5.9 μg/m3 (25) 28.0
 
March 23, 2019, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.0 ppb (0) N/A 6.7 μg/m3 (28) 28.0
 
March 23, 2019, 4 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A 7.5 μg/m3 (31) 31.0
 
March 22, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 34.0
 
March 22, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 35.0
 
March 22, 2019, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 34.0
 
March 22, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 35.0
 
March 22, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 1.3 μg/m3 (5) 33.0
 
March 22, 2019, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 1.5 μg/m3 (6) 32.0
 
March 22, 2019, 4 p.m. 14.0 ppb (13) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 1.7 μg/m3 (7) 25.0
 
March 22, 2019, 3 p.m. 24.0 ppb (22) 6.0 ppb (6) N/A 18.0 ppb (17) N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 22.0
 
March 22, 2019, 2 p.m. 24.0 ppb (22) 5.0 ppb (5) N/A 19.0 ppb (18) N/A N/A 24.0 ppb (18) 0.2 ppb (2) N/A 1.8 μg/m3 (8) 22.0
 
March 22, 2019, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 32.0
 
March 22, 2019, noon 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 34.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 35.0
 
March 22, 2019, 10 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 32.0
 
March 22, 2019, 9 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.0 ppb (0) N/A 1.0 μg/m3 (4) 28.0
 
March 22, 2019, 8 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 0.6 μg/m3 (2) 30.0
 
March 22, 2019, 7 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 0.7 μg/m3 (3) 35.0
 
March 22, 2019, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 34.0
 
March 22, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.0 ppb (0) N/A 0.9 μg/m3 (4) 31.0
 
March 22, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.0 ppb (0) N/A 0.7 μg/m3 (3) 31.0
 
March 22, 2019, 3 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 0.7 μg/m3 (3) 33.0
 
March 22, 2019, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 0.8 μg/m3 (3) 32.0
 
March 22, 2019, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 34.0
 
March 22, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.0 ppb (0) N/A 1.3 μg/m3 (5) 36.0
 
March 21, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.0 ppb (0) N/A 1.2 μg/m3 (5) 37.0
 
March 21, 2019, 10 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 4.6 μg/m3 (19) 35.0
 
March 21, 2019, 9 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 33.0
 
March 21, 2019, 8 p.m. 12.0 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 32.0
 
March 21, 2019, 7 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 31.0
 
March 21, 2019, 6 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 40.0 ppb (31) 0.0 ppb (0) N/A 3.0 μg/m3 (12) 31.0
 
March 21, 2019, 5 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 39.0 ppb (30) 0.0 ppb (0) N/A 3.0 μg/m3 (12) 30.0
 
March 21, 2019, 4 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 38.0 ppb (29) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 29.0
 
March 21, 2019, 3 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 34.0
 
March 21, 2019, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 34.0
 
March 21, 2019, 1 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 2.2 μg/m3 (9) 35.0
 
March 21, 2019, noon 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 2.0 μg/m3 (8) 33.0
 
March 21, 2019, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 35.0
 
March 21, 2019, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 36.0
 
March 21, 2019, 9 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 34.0
 
March 21, 2019, 8 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A 1.9 μg/m3 (8) 31.0
 
March 21, 2019, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.3 μg/m3 (5) 34.0
 
March 21, 2019, 6 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 32.0
 
March 21, 2019, 5 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A 1.6 μg/m3 (7) 33.0
 
March 21, 2019, 4 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A 1.5 μg/m3 (6) 35.0
 
March 21, 2019, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.0 ppb (0) N/A 1.1 μg/m3 (5) 39.0
 
March 21, 2019, 2 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 40.0
 
March 21, 2019, 1 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A 1.3 μg/m3 (5) 40.0
 
March 21, 2019, midnight 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) 0.1 ppb (1) N/A 1.2 μg/m3 (5) 39.0
 
March 20, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A 1.2 μg/m3 (5) 40.0
 
March 20, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A 1.2 μg/m3 (5) 40.0
 
March 20, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A 1.3 μg/m3 (5) 40.0
 
March 20, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.1 ppb (1) N/A 1.2 μg/m3 (5) 41.0
 
March 20, 2019, 7 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) 0.1 ppb (1) N/A 1.1 μg/m3 (5) 41.0
 
March 20, 2019, 6 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A 2.8 μg/m3 (12) 38.0
 
March 20, 2019, 5 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A 3.2 μg/m3 (13) 35.0
 
March 20, 2019, 4 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 45.0 ppb (35) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 35.0
 
March 20, 2019, 3 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A 2.6 μg/m3 (11) 33.0
 
March 20, 2019, 2 p.m. 52.0 ppb (48) 19.0 ppb (18) N/A 33.0 ppb (31) N/A N/A 16.0 ppb (12) 0.4 ppb (4) N/A 4.2 μg/m3 (18) 48.0
 
March 20, 2019, 1 p.m. 35.0 ppb (32) 5.0 ppb (5) N/A 30.0 ppb (28) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 2.5 μg/m3 (10) 32.0
 
March 20, 2019, noon 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A 1.6 μg/m3 (7) 22.0
 
March 20, 2019, 11 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 29.0
 
March 20, 2019, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) 0.0 ppb (0) N/A 1.4 μg/m3 (6) 33.0
 
March 20, 2019, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) 0.0 ppb (0) N/A 1.5 μg/m3 (6) 35.0
 
March 20, 2019, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 34.0
 
March 20, 2019, 7 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 35.0
 
March 20, 2019, 6 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 34.0
 
March 20, 2019, 5 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A 2.2 μg/m3 (9) 35.0
 
March 20, 2019, 4 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 37.0
 
March 20, 2019, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) 0.0 ppb (0) N/A 1.6 μg/m3 (7) 42.0
 
March 20, 2019, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.0 ppb (0) N/A 1.8 μg/m3 (8) 40.0
 
March 20, 2019, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.1 ppb (1) N/A 1.5 μg/m3 (6) 41.0
 
March 20, 2019, midnight 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.1 ppb (1) N/A 3.2 μg/m3 (13) 41.0
 
March 19, 2019, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.1 ppb (1) N/A 5.7 μg/m3 (24) 42.0
 
March 19, 2019, 10 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 54.0 ppb (42) 0.1 ppb (1) N/A 7.0 μg/m3 (29) 42.0
 
March 19, 2019, 9 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A 7.2 μg/m3 (30) 40.0
 
March 19, 2019, 8 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) 0.1 ppb (1) N/A 8.9 μg/m3 (37) 38.0
 
March 19, 2019, 7 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 47.0 ppb (36) 0.1 ppb (1) N/A 9.7 μg/m3 (40) 40.0
 
March 19, 2019, 6 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 5 p.m. 16.0 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 9.9 μg/m3 (41) 41.0
 
March 19, 2019, 4 p.m. 23.0 ppb (21) 8.0 ppb (7) N/A 15.0 ppb (14) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 3 p.m. 15.0 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 7.5 μg/m3 (31) 31.0
 
March 19, 2019, 2 p.m. 60.0 ppb (56) 31.0 ppb (29) N/A 29.0 ppb (27) N/A N/A 8.0 ppb (6) 0.4 ppb (4) N/A 9.3 μg/m3 (39) 56.0
 
March 19, 2019, 1 p.m. 50.0 ppb (46) 18.0 ppb (17) N/A 33.0 ppb (31) N/A N/A 3.0 ppb (2) 0.3 ppb (3) N/A 8.4 μg/m3 (35) 46.0
 
March 19, 2019, noon 28.0 ppb (26) 4.0 ppb (4) N/A 24.0 ppb (22) N/A N/A 9.0 ppb (7) 0.1 ppb (1) N/A 6.7 μg/m3 (28) 28.0
 
March 19, 2019, 11 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 6.6 μg/m3 (28) 28.0
 
March 19, 2019, 10 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
March 19, 2019, 9 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.0 ppb (0) N/A 6.3 μg/m3 (26) 26.0
 
March 19, 2019, 8 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.0 ppb (0) N/A 5.3 μg/m3 (22) 22.0
 
March 19, 2019, 7 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A 5.7 μg/m3 (24) 25.0
 
March 19, 2019, 6 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.0 ppb (0) N/A 5.8 μg/m3 (24) 29.0
 
March 19, 2019, 5 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 5.5 μg/m3 (23) 25.0
 
March 19, 2019, 4 a.m. 15.0 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A 6.1 μg/m3 (25) 25.0
 
March 19, 2019, 3 a.m. 19.0 ppb (18) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A 25.0 ppb (19) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 30.0