AQSQID: 261130001

Site Name: Houghton Lake

Location: Missaukee Co, MI

Reporting: True, Located: True

Current AQI: 32.0

Missaukee Co MI, US: 44.3106, -84.891899

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 23, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 0.4 μg/m3 (2) 32.0
 
May 23, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 23, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 4.1 μg/m3 (17) 32.0
 
May 23, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 2.1 μg/m3 (9) 32.0
 
May 23, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 4.5 μg/m3 (19) 33.0
 
May 23, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 3.2 μg/m3 (13) 34.0
 
May 23, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A -0.3 μg/m3 (0) 32.0
 
May 23, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A -1.0 μg/m3 (0) 32.0
 
May 23, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 0.2 μg/m3 (1) 32.0
 
May 23, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 5.4 μg/m3 (23) 30.0
 
May 23, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 12.6 μg/m3 (51) 51.0
 
May 23, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 15.5 μg/m3 (57) 57.0
 
May 23, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 23, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.1 μg/m3 (25) 29.0
 
May 23, 2019, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.9 μg/m3 (12) 34.0
 
May 23, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 3.3 μg/m3 (14) 38.0
 
May 23, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 6.6 μg/m3 (28) 39.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 4.8 μg/m3 (20) 37.0
 
May 23, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 1.4 μg/m3 (6) 6.0
 
May 23, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 7.5 μg/m3 (31) 38.0
 
May 23, 2019, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 10.5 μg/m3 (44) 44.0
 
May 23, 2019, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 6.1 μg/m3 (25) 33.0
 
May 23, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 6.3 μg/m3 (26) 35.0
 
May 23, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 9.5 μg/m3 (40) 40.0
 
May 22, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 5.9 μg/m3 (25) 39.0
 
May 22, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A 9.6 μg/m3 (40) 40.0
 
May 22, 2019, 9 p.m. N/A N/A 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 22, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 7.1 μg/m3 (30) 38.0
 
May 22, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
May 22, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 9.5 μg/m3 (40) 40.0
 
May 22, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 6.6 μg/m3 (28) 32.0
 
May 22, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
May 22, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.7 μg/m3 (28) 29.0
 
May 22, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 5.6 μg/m3 (23) 29.0
 
May 22, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
May 22, 2019, noon N/A N/A N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 7.3 μg/m3 (30) 30.0
 
May 22, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 13.9 μg/m3 (54) 54.0
 
May 22, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 18.7 μg/m3 (64) 64.0
 
May 22, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A N/A 27.0
 
May 22, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
May 22, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 2.2 μg/m3 (9) 29.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 22, 2019, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 9.9 μg/m3 (41) 41.0
 
May 22, 2019, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 2.9 μg/m3 (12) 29.0
 
May 22, 2019, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 3.2 μg/m3 (13) 30.0
 
May 22, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 0.4 μg/m3 (2) 30.0
 
May 22, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 2.1 μg/m3 (9) 31.0
 
May 22, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 6.2 μg/m3 (26) 31.0
 
May 21, 2019, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A -1.2 μg/m3 (0) 30.0
 
May 21, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 2.7 μg/m3 (11) 30.0
 
May 21, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
May 21, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
May 21, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 0.3 μg/m3 (1) 32.0
 
May 21, 2019, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
May 21, 2019, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 38.0 ppb (29) N/A N/A 3.8 μg/m3 (16) 29.0
 
May 21, 2019, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A 3.9 μg/m3 (16) 27.0
 
May 21, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
May 21, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A N/A 21.0 ppb (16) N/A N/A 3.5 μg/m3 (15) 16.0
 
May 21, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 ppb (7) N/A N/A 2.4 μg/m3 (10) 10.0
 
May 21, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 4.0 ppb (3) N/A N/A 2.6 μg/m3 (11) 11.0
 
May 21, 2019, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 6.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 8.0
 
May 21, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 9.0 ppb (7) N/A N/A 0.5 μg/m3 (2) 7.0
 
May 21, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 11.0 ppb (8) N/A N/A 5.8 μg/m3 (24) 24.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 7.3 μg/m3 (30) 30.0
 
May 21, 2019, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
May 21, 2019, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 23.0 ppb (18) N/A N/A 0.7 μg/m3 (3) 18.0
 
May 21, 2019, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 23.0 ppb (18) N/A N/A 0.9 μg/m3 (4) 18.0
 
May 21, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 24.0 ppb (18) N/A N/A 1.6 μg/m3 (7) 18.0
 
May 21, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 28.0 ppb (22) N/A N/A 1.6 μg/m3 (7) 22.0
 
May 21, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A N/A 31.0 ppb (24) N/A N/A 4.1 μg/m3 (17) 24.0
 
May 20, 2019, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 33.0 ppb (25) N/A N/A -0.5 μg/m3 (0) 25.0
 
May 20, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A 2.5 μg/m3 (10) 27.0
 
May 20, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 34.0 ppb (26) N/A N/A 1.7 μg/m3 (7) 26.0
 
May 20, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A 5.1 μg/m3 (21) 27.0
 
May 20, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 3.2 μg/m3 (13) 25.0
 
May 20, 2019, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 29.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
May 20, 2019, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A -1.0 μg/m3 (0) 20.0
 
May 20, 2019, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 2.4 μg/m3 (10) 20.0
 
May 20, 2019, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 26.0 ppb (20) N/A N/A 5.1 μg/m3 (21) 21.0
 
May 20, 2019, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 2.5 μg/m3 (10) 21.0
 
May 20, 2019, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A -0.2 μg/m3 (0) 21.0
 
May 20, 2019, noon N/A N/A N/A 0.0 ppb (0) N/A N/A 28.0 ppb (22) N/A N/A 1.4 μg/m3 (6) 22.0
 
May 20, 2019, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 27.0 ppb (21) N/A N/A 0.9 μg/m3 (4) 21.0
 
May 20, 2019, 10 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 24.0 ppb (18) N/A N/A 1.3 μg/m3 (5) 18.0
 
May 17, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 35.0 ppb (27) N/A N/A 3.3 μg/m3 (14) 27.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 10.1 μg/m3 (42) 42.0
 
May 17, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 11.9 μg/m3 (50) 50.0
 
May 17, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 17, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) N/A N/A 7.7 μg/m3 (32) 35.0
 
May 17, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
May 17, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 7.2 μg/m3 (30) 42.0
 
May 17, 2019, midnight N/A N/A N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 5.3 μg/m3 (22) 45.0
 
May 16, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 2.4 μg/m3 (10) 48.0
 
May 16, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 8.3 μg/m3 (35) 45.0
 
May 16, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 9.6 μg/m3 (40) 44.0
 
May 16, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 10.6 μg/m3 (44) 44.0
 
May 16, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 9.2 μg/m3 (38) 44.0
 
May 16, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 58.0 ppb (45) N/A N/A 8.0 μg/m3 (33) 45.0
 
May 16, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 9.7 μg/m3 (40) 41.0
 
May 16, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 6.9 μg/m3 (29) 38.0
 
May 16, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 6.5 μg/m3 (27) 36.0
 
May 16, 2019, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
May 16, 2019, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
May 16, 2019, noon N/A N/A N/A 0.0 ppb (0) N/A N/A 29.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
May 16, 2019, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 16.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
May 16, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 13.0 ppb (10) N/A N/A 3.2 μg/m3 (13) 13.0
 
May 16, 2019, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 ppb (14) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 16, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 ppb (13) N/A N/A 6.9 μg/m3 (29) 29.0
 
May 16, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 14.0 ppb (11) N/A N/A 8.1 μg/m3 (34) 34.0
 
May 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 4.9 μg/m3 (20) 20.0
 
May 16, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -0.4 μg/m3 (0) 1.0
 
May 16, 2019, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 7.5 μg/m3 (31) 31.0
 
May 16, 2019, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 4.1 μg/m3 (17) 29.0
 
May 16, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 4.9 μg/m3 (20) 32.0
 
May 16, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
May 16, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 0.5 μg/m3 (2) 32.0
 
May 15, 2019, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 5.3 μg/m3 (22) 35.0
 
May 15, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) N/A N/A 1.9 μg/m3 (8) 38.0
 
May 15, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 3.6 μg/m3 (15) 39.0
 
May 15, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
May 15, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 4.2 μg/m3 (18) 42.0
 
May 15, 2019, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 54.0 ppb (42) N/A N/A 3.5 μg/m3 (15) 42.0
 
May 15, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 56.0 ppb (43) N/A N/A 4.2 μg/m3 (18) 43.0
 
May 15, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) N/A N/A 13.1 μg/m3 (52) 52.0
 
May 15, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
May 15, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 6.7 μg/m3 (28) 32.0
 
May 15, 2019, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 7.2 μg/m3 (30) 32.0
 
May 15, 2019, noon N/A N/A N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 7.7 μg/m3 (32) 32.0
 
May 15, 2019, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 2.9 μg/m3 (12) 31.0
 
May 15, 2019, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 8.4 μg/m3 (35) 35.0
 
May 15, 2019, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.8 μg/m3 (28) 29.0
 
May 15, 2019, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 7.6 μg/m3 (32) 32.0
 
May 15, 2019, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 6.1 μg/m3 (25) 34.0
 
May 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 8.5 μg/m3 (35) 35.0
 
May 15, 2019, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
May 15, 2019, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 4.2 μg/m3 (18) 31.0
 
May 15, 2019, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
May 15, 2019, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 5.5 μg/m3 (23) 35.0
 
May 15, 2019, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 2.9 μg/m3 (12) 38.0
 
May 15, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 0.5 μg/m3 (2) 41.0
 
May 14, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 5.6 μg/m3 (23) 41.0
 
May 14, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 53.0 ppb (41) N/A N/A 2.8 μg/m3 (12) 41.0
 
May 14, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 52.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 14, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 2.1 μg/m3 (9) 39.0
 
May 14, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 1.4 μg/m3 (6) 39.0
 
May 14, 2019, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 51.0 ppb (39) N/A N/A 7.6 μg/m3 (32) 39.0
 
May 14, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 3.1 μg/m3 (13) 41.0
 
May 14, 2019, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
May 14, 2019, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 14, 2019, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
May 14, 2019, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
May 14, 2019, noon N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
May 13, 2019, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 32.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
May 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 10.4 μg/m3 (43) 43.0
 
May 13, 2019, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
May 13, 2019, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 13, 2019, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 3.2 μg/m3 (13) 31.0
 
May 13, 2019, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A -0.9 μg/m3 (0) 33.0
 
May 13, 2019, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 4.5 μg/m3 (19) 35.0
 
May 13, 2019, midnight N/A N/A N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.8 μg/m3 (12) 36.0
 
May 12, 2019, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 3.0 μg/m3 (12) 37.0
 
May 12, 2019, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A -0.5 μg/m3 (0) 35.0
 
May 12, 2019, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 5.1 μg/m3 (21) 35.0
 
May 12, 2019, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 1.0 μg/m3 (4) 34.0
 
May 12, 2019, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0