AQSQID: 490353010

Site Name: Rose Park

Location: Salt Lake City (Dupont Ave), UT

Reporting: True, Located: True

Current AQI: 25.0

Salt Lake City (Dupont Ave) UT, US: 40.7955, -111.9309

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 22, 2019, 3 p.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.6 μg/m3 (19) 25.0
 
May 22, 2019, 2 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.6 μg/m3 (7) 25.0
 
May 22, 2019, 1 p.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
May 22, 2019, noon 15.0 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
May 22, 2019, 10 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.8 μg/m3 (20) 22.0
 
May 22, 2019, 9 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
May 22, 2019, 8 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.9 μg/m3 (8) 23.0
 
May 22, 2019, 7 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 1.2 μg/m3 (5) 22.0
 
May 22, 2019, 6 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 1.3 μg/m3 (5) 21.0
 
May 22, 2019, 5 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
May 22, 2019, 4 a.m. 15.0 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.5 μg/m3 (10) 20.0
 
May 22, 2019, 3 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
May 22, 2019, 2 a.m. 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
May 22, 2019, 1 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
May 22, 2019, midnight 12.0 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.8 μg/m3 (8) 29.0
 
May 21, 2019, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
May 21, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 0.6 μg/m3 (2) 35.0
 
May 21, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
May 21, 2019, 8 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
May 21, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 1.7 μg/m3 (7) 32.0
 
May 21, 2019, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
May 21, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.5 μg/m3 (6) 33.0
 
May 21, 2019, 4 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 2.6 μg/m3 (11) 33.0
 
May 21, 2019, 3 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.9 μg/m3 (12) 31.0
 
May 21, 2019, 2 p.m. 15.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.3 μg/m3 (14) 24.0
 
May 21, 2019, 1 p.m. 20.0 ppb (19) 3.0 ppb (3) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
May 21, 2019, noon 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
May 21, 2019, 11 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.3 μg/m3 (10) 22.0
 
May 21, 2019, 10 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
May 21, 2019, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
May 21, 2019, 8 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.7 μg/m3 (7) 31.0
 
May 21, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
May 21, 2019, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
May 21, 2019, 5 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) N/A N/A 0.9 μg/m3 (4) 30.0
 
May 21, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.1 μg/m3 (5) 31.0
 
May 21, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
May 21, 2019, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
May 21, 2019, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
May 21, 2019, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.3 μg/m3 (5) 37.0
 
May 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) 49.0 ppb (38) N/A N/A 1.3 μg/m3 (5) 38.0
 
May 20, 2019, 10 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) N/A N/A 1.6 μg/m3 (7) 40.0
 
May 20, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.6 μg/m3 (7) 38.0
 
May 20, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
May 20, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.7 μg/m3 (11) 36.0
 
May 20, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.4 μg/m3 (10) 41.0
 
May 20, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 2.5 μg/m3 (10) 42.0
 
May 20, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 2.5 μg/m3 (10) 39.0
 
May 20, 2019, 3 p.m. 14.0 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.7 μg/m3 (15) 32.0
 
May 20, 2019, 2 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 2.5 μg/m3 (10) 33.0
 
May 20, 2019, 1 p.m. 26.0 ppb (24) 6.0 ppb (6) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.9 μg/m3 (12) 24.0
 
May 20, 2019, noon 24.0 ppb (22) 3.0 ppb (3) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 2.8 μg/m3 (12) 22.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.3 μg/m3 (10) 18.0
 
May 20, 2019, 10 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
May 20, 2019, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.4 μg/m3 (6) 34.0
 
May 20, 2019, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.4 μg/m3 (6) 36.0
 
May 20, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
May 20, 2019, 6 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 20, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.9 μg/m3 (4) 39.0
 
May 20, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.1 μg/m3 (5) 39.0
 
May 20, 2019, 3 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.5 μg/m3 (6) 38.0
 
May 20, 2019, 2 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
May 20, 2019, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.5 μg/m3 (6) 38.0
 
May 20, 2019, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.8 μg/m3 (12) 41.0
 
May 19, 2019, 11 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.4 μg/m3 (10) 41.0
 
May 19, 2019, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 3.3 μg/m3 (14) 42.0
 
May 19, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 3.9 μg/m3 (16) 42.0
 
May 19, 2019, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
May 19, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
May 19, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
May 19, 2019, 5 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 3.2 μg/m3 (13) 38.0
 
May 19, 2019, 4 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
May 19, 2019, 3 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
May 19, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 2.5 μg/m3 (10) 32.0
 
May 19, 2019, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.3 μg/m3 (10) 31.0
 
May 19, 2019, noon 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 19, 2019, 11 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 9.0
 
May 19, 2019, 10 a.m. 15.0 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 2.2 μg/m3 (9) 15.0
 
May 19, 2019, 9 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 1.9 μg/m3 (8) 16.0
 
May 19, 2019, 8 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 3.1 μg/m3 (13) 15.0
 
May 19, 2019, 7 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
May 19, 2019, 6 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 3.4 μg/m3 (14) 17.0
 
May 19, 2019, 5 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.9 μg/m3 (12) 18.0
 
May 19, 2019, 4 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.9 μg/m3 (16) 19.0
 
May 19, 2019, 3 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 13.0 μg/m3 (52) 52.0
 
May 19, 2019, 2 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0
 
May 19, 2019, 1 a.m. 11.0 ppb (10) 3.0 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
May 19, 2019, midnight 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.3 μg/m3 (10) 32.0
 
May 18, 2019, 11 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 18, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
May 18, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
May 18, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
May 18, 2019, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 1.4 μg/m3 (6) 30.0
 
May 18, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.5 μg/m3 (6) 29.0
 
May 18, 2019, 5 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
May 18, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
May 18, 2019, 3 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
May 18, 2019, 2 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
May 18, 2019, 1 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
May 18, 2019, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 0.3 μg/m3 (1) 25.0
 
May 18, 2019, 11 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
May 18, 2019, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 0.4 μg/m3 (2) 26.0
 
May 18, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.7 μg/m3 (3) 27.0
 
May 18, 2019, 8 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 18, 2019, 7 a.m. 8.0 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
May 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) 29.0 ppb (22) N/A N/A 1.4 μg/m3 (6) 22.0
 
May 18, 2019, 5 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 1.5 μg/m3 (6) 22.0
 
May 18, 2019, 4 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
May 18, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.8 μg/m3 (8) 29.0
 
May 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) 32.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
May 18, 2019, 1 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.9 μg/m3 (16) 27.0
 
May 18, 2019, midnight 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
May 17, 2019, 11 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.4 μg/m3 (14) 32.0
 
May 17, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.5 μg/m3 (10) 35.0
 
May 17, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
May 17, 2019, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 2.7 μg/m3 (11) 33.0
 
May 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) 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
May 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) 49.0 ppb (38) N/A N/A 0.8 μg/m3 (3) 38.0
 
May 17, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 17, 2019, 4 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.7 μg/m3 (7) 40.0
 
May 17, 2019, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 0.9 μg/m3 (4) 39.0
 
May 17, 2019, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.3 μg/m3 (22) 36.0
 
May 17, 2019, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
May 17, 2019, noon 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.5 μg/m3 (6) 35.0
 
May 17, 2019, 11 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
May 17, 2019, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 17, 2019, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.9 μg/m3 (8) 30.0
 
May 17, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.7 μg/m3 (7) 38.0
 
May 17, 2019, 7 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.5 μg/m3 (6) 38.0
 
May 17, 2019, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.3 μg/m3 (5) 41.0
 
May 17, 2019, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.7 μg/m3 (11) 37.0
 
May 17, 2019, 4 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) N/A N/A 7.5 μg/m3 (31) 31.0
 
May 17, 2019, 3 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.5 μg/m3 (27) 27.0
 
May 17, 2019, 2 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
May 17, 2019, 1 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 5.5 μg/m3 (23) 31.0
 
May 17, 2019, midnight 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 6.4 μg/m3 (27) 35.0
 
May 16, 2019, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 5.1 μg/m3 (21) 38.0
 
May 16, 2019, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 4.8 μg/m3 (20) 39.0
 
May 16, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 5.8 μg/m3 (24) 40.0
 
May 16, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 4.7 μg/m3 (20) 41.0
 
May 16, 2019, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 16, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 5.3 μg/m3 (22) 41.0
 
May 16, 2019, 5 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 5.4 μg/m3 (23) 39.0
 
May 16, 2019, 4 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
May 16, 2019, 3 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
May 16, 2019, 2 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.7 μg/m3 (24) 32.0
 
May 16, 2019, 1 p.m. 20.0 ppb (19) 2.0 ppb (2) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.6 μg/m3 (28) 28.0
 
May 16, 2019, noon 16.0 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.1 μg/m3 (25) 28.0
 
May 16, 2019, 11 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
May 16, 2019, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
May 16, 2019, 9 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) N/A N/A 5.4 μg/m3 (23) 36.0
 
May 16, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.9 μg/m3 (25) 36.0
 
May 16, 2019, 7 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 6.1 μg/m3 (25) 36.0
 
May 16, 2019, 6 a.m. 11.0 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 7.2 μg/m3 (30) 30.0
 
May 16, 2019, 5 a.m. 17.0 ppb (16) 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 8.4 μg/m3 (35) 35.0
 
May 16, 2019, 4 a.m. 16.0 ppb (15) 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 16, 2019, 3 a.m. 13.0 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 8.3 μg/m3 (35) 35.0
 
May 16, 2019, 2 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 6.2 μg/m3 (26) 33.0
 
May 16, 2019, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 6.7 μg/m3 (28) 39.0
 
May 16, 2019, midnight 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 8.0 μg/m3 (33) 39.0
 
May 15, 2019, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 9.6 μg/m3 (40) 41.0
 
May 15, 2019, 10 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 15, 2019, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 11.4 μg/m3 (48) 48.0
 
May 15, 2019, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 13.5 μg/m3 (53) 53.0
 
May 15, 2019, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 13.6 μg/m3 (53) 53.0
 
May 15, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A N/A 44.0
 
May 15, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 8.1 μg/m3 (34) 43.0
 
May 15, 2019, 4 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 7.6 μg/m3 (32) 41.0