ID: 2834

AQSQID: 490353013

Site Name: Herriman #3

Added: April 21, 2020, 6:24 p.m.

Updated: June 15, 2021, 12:51 p.m.

Location: Herriman (Foothills), UT

Reporting: True, Located: True

Current AQI: 36.0

Herriman (Foothills) UT, US: 40.496408, -112.036305

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 15, 2021, 11 a.m. 1.2 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 6.8 μg/m3 (29) 36.0
 
June 15, 2021, 10 a.m. 0.7 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 6.2 μg/m3 (26) 40.0
 
June 15, 2021, 9 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 5.9 μg/m3 (25) 42.0
 
June 15, 2021, 8 a.m. 0.2 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
June 15, 2021, 7 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 8.4 μg/m3 (36) 38.0
 
June 15, 2021, 6 a.m. 2.2 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 10.2 μg/m3 (43) 43.0
 
June 15, 2021, 5 a.m. 0.4 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 10.6 μg/m3 (45) 45.0
 
June 15, 2021, 4 a.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 8.2 μg/m3 (35) 40.0
 
June 15, 2021, 3 a.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 3.7 μg/m3 (16) 40.0
 
June 15, 2021, 2 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.1 μg/m3 (18) 41.0
 
June 15, 2021, 1 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 5.4 μg/m3 (23) 43.0
 
June 15, 2021, midnight -0.3 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 5.1 μg/m3 (22) 42.0
 
June 14, 2021, 11 p.m. -0.5 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.6 μg/m3 (20) 41.0
 
June 14, 2021, 10 p.m. 0.2 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 4.6 μg/m3 (20) 44.0
 
June 14, 2021, 9 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 5.3 μg/m3 (23) 46.0
 
June 14, 2021, 8 p.m. 0.5 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (47) N/A N/A 6.2 μg/m3 (26) 47.0
 
June 14, 2021, 7 p.m. 0.2 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 5.4 μg/m3 (23) 46.0
 
June 14, 2021, 6 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 5.2 μg/m3 (22) 43.0
 
June 14, 2021, 5 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 5.2 μg/m3 (22) 44.0
 
June 14, 2021, 4 p.m. -0.1 ppb (0) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
June 14, 2021, 3 p.m. -0.3 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 2.8 μg/m3 (12) 44.0
 
June 14, 2021, 2 p.m. 0.0 ppb (0) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 3.0 μg/m3 (13) 43.0
 
June 14, 2021, 1 p.m. 0.3 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 3.2 μg/m3 (14) 43.0
 
June 14, 2021, noon 0.8 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 2.9 μg/m3 (13) 43.0
 
June 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.9 μg/m3 (13) 42.0
 
June 14, 2021, 10 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 3.3 μg/m3 (14) 42.0
 
June 14, 2021, 9 a.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 3.3 μg/m3 (14) 41.0
 
June 14, 2021, 8 a.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 3.4 μg/m3 (15) 39.0
 
June 14, 2021, 7 a.m. -0.5 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 4.9 μg/m3 (21) 40.0
 
June 14, 2021, 6 a.m. -0.8 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
June 14, 2021, 5 a.m. -0.6 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 5.1 μg/m3 (22) 42.0
 
June 14, 2021, 4 a.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
June 14, 2021, 3 a.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 6.7 μg/m3 (28) 38.0
 
June 14, 2021, 2 a.m. 0.3 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 5.6 μg/m3 (24) 43.0
 
June 14, 2021, 1 a.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 6.2 μg/m3 (26) 49.0
 
June 14, 2021, midnight 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (51) N/A N/A 6.5 μg/m3 (28) 51.0
 
June 13, 2021, 11 p.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 5.9 μg/m3 (25) 49.0
 
June 13, 2021, 10 p.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 50.0 ppb (47) N/A N/A 7.0 μg/m3 (30) 47.0
 
June 13, 2021, 9 p.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 7.1 μg/m3 (30) 46.0
 
June 13, 2021, 8 p.m. -0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (47) N/A N/A 9.0 μg/m3 (38) 47.0
 
June 13, 2021, 7 p.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (50) N/A N/A 14.9 μg/m3 (57) 57.0
 
June 13, 2021, 6 p.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (50) N/A N/A 19.7 μg/m3 (67) 67.0
 
June 13, 2021, 5 p.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (50) N/A N/A 14.4 μg/m3 (56) 56.0
 
June 13, 2021, 4 p.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 14.4 μg/m3 (56) 56.0
 
June 13, 2021, 3 p.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A 15.6 μg/m3 (59) 59.0
 
June 13, 2021, 2 p.m. 3.0 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (51) N/A N/A 22.7 μg/m3 (74) 74.0
 
June 13, 2021, 1 p.m. 2.8 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 13.7 μg/m3 (55) 55.0
 
June 13, 2021, noon 2.5 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 13.4 μg/m3 (54) 54.0
 
June 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 10.8 μg/m3 (46) 46.0
 
June 13, 2021, 10 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 11.8 μg/m3 (50) 50.0
 
June 13, 2021, 9 a.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 11.7 μg/m3 (49) 50.0
 
June 13, 2021, 8 a.m. 1.5 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 13, 2021, 7 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 52.0 ppb (49) N/A N/A 13.0 μg/m3 (53) 53.0
 
June 13, 2021, 6 a.m. 5.9 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (46) N/A N/A 13.0 μg/m3 (53) 53.0
 
June 13, 2021, 5 a.m. 4.3 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 52.0 ppb (49) N/A N/A 10.0 μg/m3 (42) 49.0
 
June 13, 2021, 4 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (50) N/A N/A 11.4 μg/m3 (48) 50.0
 
June 13, 2021, 3 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 52.0 ppb (49) N/A N/A 13.4 μg/m3 (54) 54.0
 
June 13, 2021, 2 a.m. 2.3 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 68.0 ppb (94) N/A N/A 9.0 μg/m3 (38) 94.0
 
June 13, 2021, 1 a.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 73.0 ppb (103) N/A N/A 7.9 μg/m3 (33) 103.0
 
June 13, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 76.0 ppb (104) N/A N/A 8.5 μg/m3 (36) 104.0
 
June 12, 2021, 11 p.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 77.0 ppb (105) N/A N/A 9.0 μg/m3 (38) 105.0
 
June 12, 2021, 10 p.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 76.0 ppb (104) N/A N/A 8.1 μg/m3 (34) 104.0
 
June 12, 2021, 9 p.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 74.0 ppb (103) N/A N/A 8.4 μg/m3 (36) 103.0
 
June 12, 2021, 8 p.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 74.0 ppb (103) N/A N/A 10.0 μg/m3 (42) 103.0
 
June 12, 2021, 7 p.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 64.0 ppb (81) N/A N/A 9.0 μg/m3 (38) 81.0
 
June 12, 2021, 6 p.m. 0.6 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 65.0 ppb (84) N/A N/A 13.5 μg/m3 (54) 84.0
 
June 12, 2021, 5 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (81) N/A N/A 13.1 μg/m3 (54) 81.0
 
June 12, 2021, 4 p.m. 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (71) N/A N/A 17.3 μg/m3 (62) 71.0
 
June 12, 2021, 3 p.m. 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) N/A N/A 31.2 μg/m3 (92) 92.0
 
June 12, 2021, 2 p.m. 3.2 ppb (4) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 12, 2021, 1 p.m. 2.1 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 7.0 μg/m3 (30) 43.0
 
June 12, 2021, noon 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 8.5 μg/m3 (36) 42.0
 
June 12, 2021, 11 a.m. 0.6 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
June 12, 2021, 10 a.m. 0.4 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
June 12, 2021, 9 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 7.2 μg/m3 (31) 42.0
 
June 12, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A N/A 7.0 μg/m3 (30) 44.0
 
June 12, 2021, 7 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 5.6 μg/m3 (24) 45.0
 
June 12, 2021, 6 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A N/A 6.6 μg/m3 (28) 45.0
 
June 12, 2021, 5 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 8.6 μg/m3 (36) 46.0
 
June 12, 2021, 4 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 8.5 μg/m3 (36) 46.0
 
June 12, 2021, 3 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (46) N/A N/A 8.4 μg/m3 (36) 46.0
 
June 12, 2021, 2 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 62.0 ppb (74) N/A N/A 7.5 μg/m3 (32) 74.0
 
June 12, 2021, 1 a.m. 1.8 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 67.0 ppb (91) N/A N/A 8.7 μg/m3 (37) 91.0
 
June 12, 2021, midnight 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 69.0 ppb (97) N/A N/A 6.2 μg/m3 (26) 97.0
 
June 11, 2021, 11 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 69.0 ppb (97) N/A N/A 6.4 μg/m3 (27) 97.0
 
June 11, 2021, 10 p.m. 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 70.0 ppb (100) N/A N/A 6.1 μg/m3 (26) 100.0
 
June 11, 2021, 9 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 68.0 ppb (94) N/A N/A 6.5 μg/m3 (28) 94.0
 
June 11, 2021, 8 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 67.0 ppb (91) N/A N/A 7.5 μg/m3 (32) 91.0
 
June 11, 2021, 7 p.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (71) N/A N/A 8.2 μg/m3 (35) 71.0
 
June 11, 2021, 6 p.m. 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (55) N/A N/A 8.1 μg/m3 (34) 55.0
 
June 11, 2021, 5 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A N/A 8.5 μg/m3 (36) 48.0
 
June 11, 2021, 4 p.m. 0.6 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (48) N/A N/A 6.5 μg/m3 (28) 48.0
 
June 11, 2021, 3 p.m. 3.1 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 5.5 μg/m3 (23) 40.0
 
June 11, 2021, 2 p.m. 9.6 ppb (10) 3.3 ppb (4) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 6.6 μg/m3 (28) 30.0
 
June 11, 2021, 1 p.m. 4.4 ppb (5) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 4.4 μg/m3 (19) 30.0
 
June 11, 2021, noon 5.9 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 3.9 μg/m3 (17) 24.0
 
June 11, 2021, 11 a.m. 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A 2.6 μg/m3 (11) 21.0
 
June 11, 2021, 10 a.m. 4.5 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A 2.8 μg/m3 (12) 21.0
 
June 11, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A N/A 2.7 μg/m3 (12) 25.0
 
June 11, 2021, 8 a.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
June 11, 2021, 7 a.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 1.5 μg/m3 (7) 32.0
 
June 11, 2021, 6 a.m. 0.3 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
June 11, 2021, 5 a.m. 0.6 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
June 11, 2021, 4 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 3.8 μg/m3 (16) 34.0
 
June 11, 2021, 3 a.m. 1.4 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 7.1 μg/m3 (30) 40.0
 
June 11, 2021, 2 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 9.1 μg/m3 (38) 45.0
 
June 11, 2021, 1 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (48) N/A N/A 7.5 μg/m3 (32) 48.0
 
June 11, 2021, midnight -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 7.2 μg/m3 (31) 49.0
 
June 10, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 7.2 μg/m3 (31) 49.0
 
June 10, 2021, 10 p.m. 0.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 9.5 μg/m3 (40) 49.0
 
June 10, 2021, 9 p.m. 0.3 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (50) N/A N/A 12.6 μg/m3 (53) 53.0
 
June 10, 2021, 8 p.m. 0.6 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 19.7 μg/m3 (67) 67.0
 
June 10, 2021, 7 p.m. 0.6 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 19.8 μg/m3 (68) 68.0
 
June 10, 2021, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 21.1 μg/m3 (70) 70.0
 
June 10, 2021, 5 p.m. 1.0 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 19.7 μg/m3 (67) 67.0
 
June 10, 2021, 4 p.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A N/A 24.1 μg/m3 (77) 77.0
 
June 10, 2021, 3 p.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 21.1 μg/m3 (70) 70.0
 
June 10, 2021, 2 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 8.4 μg/m3 (36) 41.0
 
June 10, 2021, 1 p.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 5.6 μg/m3 (24) 41.0
 
June 10, 2021, noon -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
June 10, 2021, 11 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
June 10, 2021, 10 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 7.2 μg/m3 (31) 43.0
 
June 10, 2021, 9 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 8.0 μg/m3 (34) 43.0
 
June 10, 2021, 8 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 9.4 μg/m3 (40) 43.0
 
June 10, 2021, 7 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 8.1 μg/m3 (34) 44.0
 
June 10, 2021, 6 a.m. -0.5 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 6.5 μg/m3 (28) 46.0
 
June 10, 2021, 5 a.m. -0.5 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 8.1 μg/m3 (34) 45.0
 
June 10, 2021, 4 a.m. -0.6 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 13.1 μg/m3 (54) 54.0
 
June 10, 2021, 3 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 10.8 μg/m3 (46) 46.0
 
June 10, 2021, 2 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 5.7 μg/m3 (24) 41.0
 
June 10, 2021, 1 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 7.5 μg/m3 (32) 42.0
 
June 10, 2021, midnight -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 5.6 μg/m3 (24) 41.0
 
June 9, 2021, 11 p.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
June 9, 2021, 10 p.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 46.0 ppb (43) N/A N/A 4.9 μg/m3 (21) 43.0
 
June 9, 2021, 9 p.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 4.8 μg/m3 (20) 44.0
 
June 9, 2021, 8 p.m. -0.4 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 3.7 μg/m3 (16) 46.0
 
June 9, 2021, 7 p.m. -0.4 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
June 9, 2021, 6 p.m. 0.2 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (48) N/A N/A 5.3 μg/m3 (23) 48.0
 
June 9, 2021, 5 p.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 5.5 μg/m3 (23) 49.0
 
June 9, 2021, 4 p.m. 0.3 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (51) N/A N/A 6.3 μg/m3 (27) 51.0
 
June 9, 2021, 3 p.m. 3.4 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) N/A N/A 8.3 μg/m3 (35) 50.0
 
June 9, 2021, 2 p.m. 0.8 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 54.0 ppb (50) N/A N/A 8.0 μg/m3 (34) 50.0
 
June 9, 2021, 1 p.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 55.0 ppb (51) N/A N/A 6.4 μg/m3 (27) 51.0
 
June 9, 2021, noon -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 57.0 ppb (58) N/A N/A 6.0 μg/m3 (25) 58.0
 
June 9, 2021, 11 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 57.0 ppb (58) N/A N/A 6.2 μg/m3 (26) 58.0
 
June 9, 2021, 10 a.m. -0.5 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 54.0 ppb (50) N/A N/A 5.1 μg/m3 (22) 50.0
 
June 9, 2021, 9 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 54.0 ppb (50) N/A N/A 5.3 μg/m3 (23) 50.0
 
June 9, 2021, 8 a.m. 0.1 ppb (1) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 53.0 ppb (50) N/A N/A 5.3 μg/m3 (23) 50.0
 
June 9, 2021, 7 a.m. -0.1 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 51.0 ppb (48) N/A N/A 4.5 μg/m3 (19) 48.0
 
June 9, 2021, 6 a.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (47) N/A N/A 4.5 μg/m3 (19) 47.0
 
June 9, 2021, 5 a.m. 0.0 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 5.6 μg/m3 (24) 46.0
 
June 9, 2021, 4 a.m. -0.4 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 48.0 ppb (45) N/A N/A 8.4 μg/m3 (36) 45.0
 
June 9, 2021, 3 a.m. -0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (46) N/A N/A 7.9 μg/m3 (33) 46.0
 
June 9, 2021, 2 a.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 52.0 ppb (49) N/A N/A 10.3 μg/m3 (43) 49.0
 
June 9, 2021, 1 a.m. -0.3 ppb (0) 0.1 ppb (1) N/A -1.0 ppb (0) N/A N/A 55.0 ppb (51) N/A N/A 10.9 μg/m3 (46) 51.0
 
June 9, 2021, midnight -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 58.0 ppb (61) N/A N/A 10.9 μg/m3 (46) 61.0
 
June 8, 2021, 11 p.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 58.0 ppb (61) N/A N/A 9.6 μg/m3 (40) 61.0
 
June 8, 2021, 10 p.m. -0.2 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 58.0 ppb (61) N/A N/A 9.6 μg/m3 (40) 61.0
 
June 8, 2021, 9 p.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 63.0 ppb (78) N/A N/A 12.6 μg/m3 (53) 78.0
 
June 8, 2021, 8 p.m. 0.1 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 60.0 ppb (68) N/A N/A 10.8 μg/m3 (46) 68.0
 
June 8, 2021, 7 p.m. -0.3 ppb (0) -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
June 8, 2021, 6 p.m. -0.1 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
June 8, 2021, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
June 8, 2021, 4 p.m. 0.4 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A N/A 5.2 μg/m3 (22) 44.0
 
June 8, 2021, 3 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A N/A 5.6 μg/m3 (24) 42.0
 
June 8, 2021, 2 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 5.5 μg/m3 (23) 41.0
 
June 8, 2021, 1 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 5.3 μg/m3 (23) 41.0
 
June 8, 2021, noon -0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A N/A 4.5 μg/m3 (19) 42.0