AQSQID: 490353013

Site Name: Herriman #3

Location: Herriman, UT

Reporting: True, Located: True

Current AQI: 29.0

Herriman UT, US: 40.496408, -112.036305

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 22, 2019, 2 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 0.9 μg/m3 (4) 29.0
 
May 22, 2019, 1 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
May 22, 2019, noon 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
May 22, 2019, 11 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 22, 2019, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
May 22, 2019, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 1.9 μg/m3 (8) 26.0
 
May 22, 2019, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 1.6 μg/m3 (7) 25.0
 
May 22, 2019, 7 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
May 22, 2019, 6 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.2 μg/m3 (13) 23.0
 
May 22, 2019, 5 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
May 22, 2019, 4 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
May 22, 2019, 3 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 3.6 μg/m3 (15) 28.0
 
May 22, 2019, 2 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) N/A N/A 3.8 μg/m3 (16) 36.0
 
May 22, 2019, 1 a.m. 7.0 ppb (6) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) N/A N/A 3.4 μg/m3 (14) 37.0
 
May 22, 2019, midnight 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 2.7 μg/m3 (11) 38.0
 
May 21, 2019, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
May 21, 2019, 10 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A N/A 1.2 μg/m3 (5) 37.0
 
May 21, 2019, 9 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
May 21, 2019, 8 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
May 21, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 0.8 μg/m3 (3) 35.0
 
May 21, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
May 21, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
May 21, 2019, 4 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
May 21, 2019, 3 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 2.1 μg/m3 (9) 37.0
 
May 21, 2019, 2 p.m. 36.0 ppb (33) 27.0 ppb (25) N/A 9.0 ppb (8) N/A N/A 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
May 21, 2019, 1 p.m. 13.0 ppb (12) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A 42.0 ppb (32) N/A N/A 1.9 μg/m3 (8) 32.0
 
May 21, 2019, noon 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
May 21, 2019, 11 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
May 21, 2019, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
May 21, 2019, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
May 21, 2019, 8 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 2.8 μg/m3 (12) 36.0
 
May 21, 2019, 7 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
May 21, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
May 21, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
May 21, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 1.8 μg/m3 (8) 38.0
 
May 21, 2019, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A N/A 2.5 μg/m3 (10) 35.0
 
May 21, 2019, 2 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) N/A N/A 4.3 μg/m3 (18) 35.0
 
May 21, 2019, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 2.9 μg/m3 (12) 38.0
 
May 21, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 60.0 ppb (46) N/A N/A 2.6 μg/m3 (11) 46.0
 
May 20, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 65.0 ppb (50) N/A N/A 2.9 μg/m3 (12) 50.0
 
May 20, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A N/A 2.3 μg/m3 (10) 45.0
 
May 20, 2019, 9 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 54.0 ppb (42) N/A N/A 3.0 μg/m3 (12) 42.0
 
May 20, 2019, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) N/A N/A 2.7 μg/m3 (11) 42.0
 
May 20, 2019, 7 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (45) N/A N/A 2.8 μg/m3 (12) 45.0
 
May 20, 2019, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 2.7 μg/m3 (11) 46.0
 
May 20, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 2.6 μg/m3 (11) 46.0
 
May 20, 2019, 4 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 2.5 μg/m3 (10) 45.0
 
May 20, 2019, 3 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 2.0 μg/m3 (8) 45.0
 
May 20, 2019, 2 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A 1.8 μg/m3 (8) 43.0
 
May 20, 2019, 1 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 1.8 μg/m3 (8) 45.0
 
May 20, 2019, noon 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 58.0 ppb (45) N/A N/A 1.8 μg/m3 (8) 45.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 1.9 μg/m3 (8) 44.0
 
May 20, 2019, 10 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 1.7 μg/m3 (7) 45.0
 
May 20, 2019, 9 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 1.6 μg/m3 (7) 45.0
 
May 20, 2019, 8 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A 60.0 ppb (46) N/A N/A 1.6 μg/m3 (7) 46.0
 
May 20, 2019, 7 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 1.7 μg/m3 (7) 46.0
 
May 20, 2019, 6 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 1.8 μg/m3 (8) 46.0
 
May 20, 2019, 5 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 1.4 μg/m3 (6) 44.0
 
May 20, 2019, 4 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 1.6 μg/m3 (7) 44.0
 
May 20, 2019, 3 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 1.8 μg/m3 (8) 44.0
 
May 20, 2019, 2 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 1.8 μg/m3 (8) 45.0
 
May 20, 2019, 1 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 1.4 μg/m3 (6) 43.0
 
May 20, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 1.4 μg/m3 (6) 43.0
 
May 19, 2019, 11 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 63.0 ppb (48) N/A N/A 2.8 μg/m3 (12) 48.0
 
May 19, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (49) N/A N/A 4.3 μg/m3 (18) 49.0
 
May 19, 2019, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 65.0 ppb (50) N/A N/A 4.7 μg/m3 (20) 50.0
 
May 19, 2019, 8 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 4.2 μg/m3 (18) 46.0
 
May 19, 2019, 7 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 4.7 μg/m3 (20) 46.0
 
May 19, 2019, 6 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 3.6 μg/m3 (15) 44.0
 
May 19, 2019, 5 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 3.1 μg/m3 (13) 42.0
 
May 19, 2019, 4 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 2.6 μg/m3 (11) 40.0
 
May 19, 2019, 3 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
May 19, 2019, 2 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
May 19, 2019, 1 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 19, 2019, noon 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
May 19, 2019, 10 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 1.7 μg/m3 (7) 34.0
 
May 19, 2019, 9 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
May 19, 2019, 8 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
May 19, 2019, 7 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A N/A 1.9 μg/m3 (8) 27.0
 
May 19, 2019, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
May 19, 2019, 5 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 0.9 μg/m3 (4) 33.0
 
May 19, 2019, 4 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 19, 2019, 3 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
May 19, 2019, 2 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
May 19, 2019, 1 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 1.5 μg/m3 (6) 33.0
 
May 19, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
May 18, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
May 18, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
May 18, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
May 18, 2019, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 11.0
 
May 18, 2019, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 2.3 μg/m3 (10) 33.0
 
May 18, 2019, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 2.2 μg/m3 (9) 33.0
 
May 18, 2019, 5 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 1.5 μg/m3 (6) 32.0
 
May 18, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
May 18, 2019, 3 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
May 18, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
May 18, 2019, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
May 18, 2019, noon 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
May 18, 2019, 11 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.4 μg/m3 (6) 6.0
 
May 18, 2019, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.4 μg/m3 (6) 29.0
 
May 18, 2019, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
May 18, 2019, 8 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 0.7 μg/m3 (3) 33.0
 
May 18, 2019, 7 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.5 μg/m3 (6) 26.0
 
May 18, 2019, 6 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
May 18, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 1.6 μg/m3 (7) 33.0
 
May 18, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
May 18, 2019, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 2.4 μg/m3 (10) 34.0
 
May 18, 2019, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
May 18, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.5 μg/m3 (6) 36.0
 
May 18, 2019, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 1.5 μg/m3 (6) 38.0
 
May 17, 2019, 11 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A 2.1 μg/m3 (9) 39.0
 
May 17, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A 1.4 μg/m3 (6) 38.0
 
May 17, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 1.2 μg/m3 (5) 37.0
 
May 17, 2019, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
May 17, 2019, 7 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 57.0 ppb (44) N/A N/A 2.8 μg/m3 (12) 44.0
 
May 17, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 58.0 ppb (45) N/A N/A 2.5 μg/m3 (10) 45.0
 
May 17, 2019, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A N/A 2.9 μg/m3 (12) 42.0
 
May 17, 2019, 4 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 53.0 ppb (41) N/A N/A 2.3 μg/m3 (10) 41.0
 
May 17, 2019, 3 p.m. 15.0 ppb (14) 8.0 ppb (7) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) N/A N/A 2.2 μg/m3 (9) 39.0
 
May 17, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
May 17, 2019, 1 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 2.1 μg/m3 (9) 37.0
 
May 17, 2019, noon 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 2.7 μg/m3 (11) 40.0
 
May 17, 2019, 11 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 3.0 μg/m3 (12) 45.0
 
May 17, 2019, 10 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 2.2 μg/m3 (9) 45.0
 
May 17, 2019, 9 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 1.8 μg/m3 (8) 48.0
 
May 17, 2019, 8 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) N/A N/A 2.0 μg/m3 (8) 47.0
 
May 17, 2019, 7 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (49) N/A N/A 1.7 μg/m3 (7) 49.0
 
May 17, 2019, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 65.0 ppb (50) N/A N/A 1.4 μg/m3 (6) 50.0
 
May 17, 2019, 5 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 63.0 ppb (48) N/A N/A 0.8 μg/m3 (3) 48.0
 
May 17, 2019, 4 a.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 2.1 μg/m3 (9) 39.0
 
May 17, 2019, 3 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 6.7 μg/m3 (28) 36.0
 
May 17, 2019, 2 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 17, 2019, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (36) N/A N/A 7.3 μg/m3 (30) 36.0
 
May 17, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 5.8 μg/m3 (24) 39.0
 
May 16, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 5.5 μg/m3 (23) 43.0
 
May 16, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 4.5 μg/m3 (19) 43.0
 
May 16, 2019, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 5.2 μg/m3 (22) 46.0
 
May 16, 2019, 8 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A N/A 5.7 μg/m3 (24) 45.0
 
May 16, 2019, 7 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 4.9 μg/m3 (20) 44.0
 
May 16, 2019, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 4.5 μg/m3 (19) 44.0
 
May 16, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 7.5 μg/m3 (31) 44.0
 
May 16, 2019, 4 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A 5.3 μg/m3 (22) 43.0
 
May 16, 2019, 3 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 6.4 μg/m3 (27) 42.0
 
May 16, 2019, 2 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A N/A 4.7 μg/m3 (20) 42.0
 
May 16, 2019, 1 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) N/A N/A 4.4 μg/m3 (18) 42.0
 
May 16, 2019, noon 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) N/A N/A 4.4 μg/m3 (18) 38.0
 
May 16, 2019, 11 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) N/A N/A 4.5 μg/m3 (19) 40.0
 
May 16, 2019, 10 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 4.1 μg/m3 (17) 44.0
 
May 16, 2019, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 4.4 μg/m3 (18) 45.0
 
May 16, 2019, 8 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 4.9 μg/m3 (20) 44.0
 
May 16, 2019, 7 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
May 16, 2019, 6 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 5.9 μg/m3 (25) 44.0
 
May 16, 2019, 5 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 6.1 μg/m3 (25) 44.0
 
May 16, 2019, 4 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 6.4 μg/m3 (27) 43.0
 
May 16, 2019, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 6.4 μg/m3 (27) 42.0
 
May 16, 2019, 2 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 5.4 μg/m3 (23) 43.0
 
May 16, 2019, 1 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A N/A 5.0 μg/m3 (21) 45.0
 
May 16, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 7.4 μg/m3 (31) 45.0
 
May 15, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A 7.2 μg/m3 (30) 46.0
 
May 15, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) N/A N/A 9.1 μg/m3 (38) 47.0
 
May 15, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 7.7 μg/m3 (32) 48.0
 
May 15, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 7.7 μg/m3 (32) 48.0
 
May 15, 2019, 7 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (49) N/A N/A 7.9 μg/m3 (33) 49.0
 
May 15, 2019, 6 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 64.0 ppb (49) N/A N/A 6.1 μg/m3 (25) 49.0
 
May 15, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 5.7 μg/m3 (24) 48.0
 
May 15, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) N/A N/A 5.0 μg/m3 (21) 42.0
 
May 15, 2019, 3 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A 4.6 μg/m3 (19) 43.0