AQSQID: 340410007

Site Name: Columbia

Location: Warren Co, NJ

Reporting: True, Located: True

Current AQI: 32.0

Warren Co NJ, US: 40.924606, -75.067825

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 20, 2019, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.3 μg/m3 (18) 32.0
 
May 20, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
May 20, 2019, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A N/A 23.0
 
May 20, 2019, noon 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
May 20, 2019, 11 a.m. 21.0 ppb (19) 9.0 ppb (8) N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 6.8 μg/m3 (28) 28.0
 
May 20, 2019, 10 a.m. 69.0 ppb (66) 45.0 ppb (42) N/A 24.0 ppb (22) N/A 0.0 ppb (0) N/A N/A N/A 6.8 μg/m3 (28) 66.0
 
May 20, 2019, 9 a.m. 67.0 ppb (64) 41.0 ppb (38) N/A 26.0 ppb (24) N/A N/A 0.0 ppb (0) N/A N/A 5.7 μg/m3 (24) 64.0
 
May 20, 2019, 8 a.m. 44.0 ppb (41) 17.0 ppb (16) N/A 27.0 ppb (25) N/A N/A 2.0 ppb (2) N/A N/A 5.8 μg/m3 (24) 41.0
 
May 20, 2019, 7 a.m. 41.0 ppb (38) 18.0 ppb (17) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 5.0 μg/m3 (21) 38.0
 
May 20, 2019, 6 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.1 μg/m3 (21) 22.0
 
May 20, 2019, 5 a.m. 21.0 ppb (19) 5.0 ppb (5) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A N/A 22.0
 
May 20, 2019, 4 a.m. 31.0 ppb (29) 9.0 ppb (8) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A N/A 29.0
 
May 20, 2019, 3 a.m. 16.0 ppb (15) 2.0 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 2 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 10.4 μg/m3 (43) 43.0
 
May 20, 2019, 1 a.m. 38.0 ppb (35) 13.0 ppb (12) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 13.4 μg/m3 (53) 53.0
 
May 20, 2019, midnight 32.0 ppb (30) 7.0 ppb (6) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 15.7 μg/m3 (58) 58.0
 
May 19, 2019, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 13.2 μg/m3 (53) 53.0
 
May 19, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 10.3 μg/m3 (43) 43.0
 
May 19, 2019, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A N/A 44.0
 
May 19, 2019, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 60.0 ppb (46) N/A N/A N/A 46.0
 
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) 59.0 ppb (45) N/A N/A 6.9 μg/m3 (29) 45.0
 
May 19, 2019, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 58.0 ppb (45) N/A N/A 5.1 μg/m3 (21) 45.0
 
May 19, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 2.8 μg/m3 (12) 42.0
 
May 19, 2019, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.3 μg/m3 (5) 38.0
 
May 19, 2019, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
May 19, 2019, 2 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
May 19, 2019, 1 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A N/A 33.0
 
May 19, 2019, noon 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A N/A 26.0
 
May 19, 2019, 11 a.m. 26.0 ppb (24) 13.0 ppb (12) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 11.5 μg/m3 (48) 48.0
 
May 19, 2019, 10 a.m. 27.0 ppb (25) 11.0 ppb (10) N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 11.4 μg/m3 (48) 48.0
 
May 19, 2019, 9 a.m. 36.0 ppb (33) 18.0 ppb (17) N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) N/A N/A 12.0 μg/m3 (50) 50.0
 
May 19, 2019, 8 a.m. 36.0 ppb (33) 18.0 ppb (17) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) N/A N/A 11.9 μg/m3 (50) 50.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 13.4 μg/m3 (53) 53.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.5 μg/m3 (55) 55.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A N/A 2.0
 
May 19, 2019, 4 a.m. 21.0 ppb (19) 1.0 ppb (1) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A N/A 19.0
 
May 19, 2019, 3 a.m. 25.0 ppb (23) 3.0 ppb (3) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 7.0 μg/m3 (29) 29.0
 
May 19, 2019, 2 a.m. 19.0 ppb (18) 0.0 ppb (0) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 1.4 μg/m3 (6) 18.0
 
May 19, 2019, 1 a.m. 9.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
May 19, 2019, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
May 18, 2019, 11 p.m. 8.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 5.5 μg/m3 (23) 33.0
 
May 18, 2019, 10 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 3.1 μg/m3 (13) 40.0
 
May 18, 2019, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A N/A 39.0
 
May 18, 2019, 8 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 N/A 40.0
 
May 18, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A -0.6 μg/m3 (0) 38.0
 
May 18, 2019, 6 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.7 μg/m3 (7) 34.0
 
May 18, 2019, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
May 18, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 7.9 μg/m3 (33) 33.0
 
May 18, 2019, 3 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 8.2 μg/m3 (34) 34.0
 
May 18, 2019, 2 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 18, 2019, 1 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A N/A 22.0
 
May 18, 2019, noon 9.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A N/A 22.0
 
May 18, 2019, 11 a.m. 32.0 ppb (30) 14.0 ppb (13) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A N/A 10.4 μg/m3 (43) 43.0
 
May 18, 2019, 10 a.m. 30.0 ppb (28) 11.0 ppb (10) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A N/A 10.8 μg/m3 (45) 45.0
 
May 18, 2019, 9 a.m. 51.0 ppb (47) 25.0 ppb (23) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 11.2 μg/m3 (47) 47.0
 
May 18, 2019, 8 a.m. 25.0 ppb (23) 6.0 ppb (6) N/A 19.0 ppb (18) N/A N/A 10.0 ppb (8) N/A N/A 13.6 μg/m3 (53) 53.0
 
May 18, 2019, 7 a.m. 14.0 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 15.7 μg/m3 (58) 58.0
 
May 18, 2019, 6 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 17.7 μg/m3 (62) 62.0
 
May 18, 2019, 5 a.m. 19.0 ppb (18) 2.0 ppb (2) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A N/A 19.0
 
May 18, 2019, 4 a.m. 23.0 ppb (21) 4.0 ppb (4) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A N/A 21.0
 
May 18, 2019, 3 a.m. 23.0 ppb (21) 6.0 ppb (6) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 9.3 μg/m3 (39) 39.0
 
May 18, 2019, 2 a.m. 33.0 ppb (31) 10.0 ppb (9) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 7.1 μg/m3 (30) 31.0
 
May 18, 2019, 1 a.m. 29.0 ppb (27) 7.0 ppb (6) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 7.9 μg/m3 (33) 33.0
 
May 18, 2019, midnight 26.0 ppb (24) 6.0 ppb (6) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 8.7 μg/m3 (36) 36.0
 
May 17, 2019, 11 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 8.1 μg/m3 (34) 35.0
 
May 17, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 7.1 μg/m3 (30) 42.0
 
May 17, 2019, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A N/A 41.0
 
May 17, 2019, 8 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 N/A 39.0
 
May 17, 2019, 7 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 8.3 μg/m3 (35) 39.0
 
May 17, 2019, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 10.5 μg/m3 (44) 44.0
 
May 17, 2019, 5 p.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 13.2 μg/m3 (53) 53.0
 
May 17, 2019, 4 p.m. 6.0 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 13.5 μg/m3 (53) 53.0
 
May 17, 2019, 3 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 14.6 μg/m3 (56) 56.0
 
May 17, 2019, 2 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 14.4 μg/m3 (55) 55.0
 
May 17, 2019, 1 p.m. 14.0 ppb (13) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A N/A 22.0
 
May 17, 2019, noon 34.0 ppb (31) 19.0 ppb (18) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A N/A 31.0
 
May 17, 2019, 11 a.m. 126.0 ppb (105) 109.0 ppb (102) N/A 16.0 ppb (15) N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 9.9 μg/m3 (41) 105.0
 
May 17, 2019, 10 a.m. 124.0 ppb (104) 108.0 ppb (101) N/A 16.0 ppb (15) N/A 2.0 ppb (3) N/A N/A N/A 11.8 μg/m3 (49) 104.0
 
May 17, 2019, 9 a.m. 159.0 ppb (111) 140.0 ppb (108) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 12.5 μg/m3 (51) 111.0
 
May 17, 2019, 8 a.m. 158.0 ppb (111) 136.0 ppb (107) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 13.4 μg/m3 (53) 111.0
 
May 17, 2019, 7 a.m. 131.0 ppb (106) 107.0 ppb (101) N/A 23.0 ppb (21) N/A 1.0 ppb (1) 0.0 ppb (0) N/A N/A 9.9 μg/m3 (41) 106.0
 
May 17, 2019, 6 a.m. 70.0 ppb (67) 48.0 ppb (44) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 6.5 μg/m3 (27) 67.0
 
May 17, 2019, 5 a.m. 72.0 ppb (69) 47.0 ppb (44) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 69.0
 
May 17, 2019, 4 a.m. 63.0 ppb (60) 36.0 ppb (33) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 60.0
 
May 17, 2019, 3 a.m. 105.0 ppb (101) 72.0 ppb (69) N/A 32.0 ppb (30) N/A 1.0 ppb (1) 0.0 ppb (0) N/A N/A 9.1 μg/m3 (38) 101.0
 
May 17, 2019, 2 a.m. 145.0 ppb (108) 109.0 ppb (102) N/A 36.0 ppb (33) N/A 2.0 ppb (3) 0.0 ppb (0) N/A N/A 6.5 μg/m3 (27) 108.0
 
May 17, 2019, 1 a.m. 78.0 ppb (76) 46.0 ppb (43) N/A 31.0 ppb (29) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -0.5 μg/m3 (0) 76.0
 
May 17, 2019, midnight 28.0 ppb (26) 6.0 ppb (6) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A -4.6 μg/m3 (0) 26.0
 
May 16, 2019, 11 p.m. 8.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A -2.1 μg/m3 (0) 16.0
 
May 16, 2019, 10 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 3.1 μg/m3 (13) 33.0
 
May 16, 2019, 9 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A N/A 36.0
 
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) 49.0 ppb (38) N/A N/A N/A 38.0
 
May 16, 2019, 7 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 6.1 μg/m3 (25) 35.0
 
May 16, 2019, 6 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 7.1 μg/m3 (30) 35.0
 
May 16, 2019, 5 p.m. 11.0 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 16, 2019, 4 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 8.0 μg/m3 (33) 35.0
 
May 16, 2019, 3 p.m. 15.0 ppb (14) 5.0 ppb (5) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.3 μg/m3 (26) 32.0
 
May 16, 2019, 2 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.5 μg/m3 (19) 35.0
 
May 16, 2019, 1 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 N/A 31.0
 
May 16, 2019, noon 27.0 ppb (25) 13.0 ppb (12) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 3.2 μg/m3 (13) 25.0
 
May 16, 2019, 11 a.m. 42.0 ppb (39) 26.0 ppb (24) N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 5.7 μg/m3 (24) 39.0
 
May 16, 2019, 10 a.m. 41.0 ppb (38) 25.0 ppb (23) N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 9.4 μg/m3 (39) 39.0
 
May 16, 2019, 9 a.m. 48.0 ppb (44) 33.0 ppb (31) N/A 15.0 ppb (14) N/A N/A 1.0 ppb (1) N/A N/A 7.4 μg/m3 (31) 44.0
 
May 16, 2019, 8 a.m. 36.0 ppb (33) 19.0 ppb (18) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) N/A N/A 4.6 μg/m3 (19) 33.0
 
May 16, 2019, 7 a.m. 56.0 ppb (52) 30.0 ppb (28) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 4.6 μg/m3 (19) 52.0
 
May 16, 2019, 6 a.m. 37.0 ppb (34) 16.0 ppb (15) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 6.1 μg/m3 (25) 34.0
 
May 16, 2019, 5 a.m. 83.0 ppb (81) 54.0 ppb (50) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A N/A 81.0
 
May 16, 2019, 4 a.m. 28.0 ppb (26) 6.0 ppb (6) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A N/A 26.0
 
May 16, 2019, 3 a.m. 36.0 ppb (33) 10.0 ppb (9) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 2.1 μg/m3 (9) 33.0
 
May 16, 2019, 2 a.m. 37.0 ppb (34) 15.0 ppb (14) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 1.4 μg/m3 (6) 34.0
 
May 16, 2019, 1 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 2.0 μg/m3 (8) 17.0
 
May 16, 2019, midnight 14.0 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 15, 2019, 11 p.m. 20.0 ppb (19) 6.0 ppb (6) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.6 μg/m3 (23) 26.0
 
May 15, 2019, 10 p.m. 13.0 ppb (12) 3.0 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
May 15, 2019, 9 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A N/A 31.0
 
May 15, 2019, 8 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A N/A 34.0
 
May 15, 2019, 7 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 4.5 μg/m3 (19) 33.0
 
May 15, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.7 μg/m3 (28) 32.0
 
May 15, 2019, 5 p.m. 13.0 ppb (12) 6.0 ppb (6) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 5.2 μg/m3 (22) 29.0
 
May 15, 2019, 4 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.2 μg/m3 (18) 28.0
 
May 15, 2019, 3 p.m. 10.0 ppb (9) 5.0 ppb (5) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 15, 2019, 2 p.m. 15.0 ppb (14) 8.0 ppb (7) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A -0.5 μg/m3 (0) 21.0
 
May 15, 2019, 1 p.m. 16.0 ppb (15) 8.0 ppb (7) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A N/A 15.0
 
May 15, 2019, noon 15.0 ppb (14) 8.0 ppb (7) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A N/A 15.0
 
May 15, 2019, 11 a.m. 38.0 ppb (35) 23.0 ppb (21) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 2.2 μg/m3 (9) 35.0
 
May 15, 2019, 10 a.m. 26.0 ppb (24) 15.0 ppb (14) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 4.1 μg/m3 (17) 24.0
 
May 15, 2019, 9 a.m. 38.0 ppb (35) 27.0 ppb (25) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 4.9 μg/m3 (20) 35.0
 
May 15, 2019, 8 a.m. 79.0 ppb (77) 57.0 ppb (53) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) N/A N/A 3.5 μg/m3 (15) 77.0
 
May 15, 2019, 7 a.m. 43.0 ppb (40) 26.0 ppb (24) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 2.8 μg/m3 (12) 40.0
 
May 15, 2019, 6 a.m. 28.0 ppb (26) 14.0 ppb (13) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 3.1 μg/m3 (13) 26.0
 
May 15, 2019, 5 a.m. 29.0 ppb (27) 15.0 ppb (14) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 27.0
 
May 15, 2019, 4 a.m. 30.0 ppb (28) 14.0 ppb (13) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 28.0
 
May 15, 2019, 3 a.m. 23.0 ppb (21) 10.0 ppb (9) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 2.0 μg/m3 (8) 21.0
 
May 15, 2019, 2 a.m. 29.0 ppb (27) 16.0 ppb (15) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 3.6 μg/m3 (15) 27.0
 
May 15, 2019, 1 a.m. 24.0 ppb (22) 11.0 ppb (10) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 4.4 μg/m3 (18) 22.0
 
May 15, 2019, midnight 28.0 ppb (26) 15.0 ppb (14) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 4.6 μg/m3 (19) 26.0
 
May 14, 2019, 11 p.m. 29.0 ppb (27) 15.0 ppb (14) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 2.5 μg/m3 (10) 27.0
 
May 14, 2019, 10 p.m. 16.0 ppb (15) 8.0 ppb (7) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.0 μg/m3 (8) 15.0
 
May 14, 2019, 9 p.m. 27.0 ppb (25) 15.0 ppb (14) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A N/A 25.0
 
May 14, 2019, 8 p.m. 23.0 ppb (21) 12.0 ppb (11) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A N/A 21.0
 
May 14, 2019, 7 p.m. 18.0 ppb (17) 9.0 ppb (8) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 1.1 μg/m3 (5) 19.0
 
May 14, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
May 14, 2019, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
May 14, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A -1.5 μg/m3 (0) 21.0
 
May 14, 2019, 3 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A -0.4 μg/m3 (0) 15.0
 
May 14, 2019, 2 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 5.8 μg/m3 (24) 24.0
 
May 14, 2019, 1 p.m. 24.0 ppb (22) 14.0 ppb (13) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 22.0
 
May 14, 2019, noon 14.0 ppb (13) 6.0 ppb (6) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A N/A 13.0
 
May 14, 2019, 11 a.m. 7.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 3.9 μg/m3 (16) 16.0
 
May 14, 2019, 10 a.m. 19.0 ppb (18) 8.0 ppb (7) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 2.9 μg/m3 (12) 18.0
 
May 14, 2019, 9 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) N/A N/A 4.1 μg/m3 (17) 17.0
 
May 14, 2019, 8 a.m. 35.0 ppb (32) 20.0 ppb (19) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) N/A N/A 3.9 μg/m3 (16) 32.0
 
May 14, 2019, 7 a.m. 66.0 ppb (63) 44.0 ppb (41) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 2.9 μg/m3 (12) 63.0
 
May 14, 2019, 6 a.m. 51.0 ppb (47) 30.0 ppb (28) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 2.7 μg/m3 (11) 47.0
 
May 14, 2019, 5 a.m. 31.0 ppb (29) 16.0 ppb (15) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A N/A 29.0
 
May 14, 2019, 4 a.m. 36.0 ppb (33) 18.0 ppb (17) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A N/A 33.0
 
May 14, 2019, 3 a.m. 38.0 ppb (35) 16.0 ppb (15) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 3.5 μg/m3 (15) 35.0
 
May 14, 2019, 2 a.m. 38.0 ppb (35) 17.0 ppb (16) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 3.4 μg/m3 (14) 35.0
 
May 14, 2019, 1 a.m. 34.0 ppb (31) 15.0 ppb (14) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 2.9 μg/m3 (12) 31.0
 
May 14, 2019, midnight 40.0 ppb (37) 19.0 ppb (18) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 1.5 μg/m3 (6) 37.0
 
May 13, 2019, 11 p.m. 34.0 ppb (31) 15.0 ppb (14) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 2.7 μg/m3 (11) 31.0
 
May 13, 2019, 10 p.m. 24.0 ppb (22) 10.0 ppb (9) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 22.0
 
May 13, 2019, 9 p.m. 30.0 ppb (28) 14.0 ppb (13) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A N/A 28.0
 
May 13, 2019, 8 p.m. 30.0 ppb (28) 14.0 ppb (13) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A N/A 28.0
 
May 13, 2019, 7 p.m. 38.0 ppb (35) 19.0 ppb (18) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 1.1 μg/m3 (5) 35.0
 
May 13, 2019, 6 p.m. 32.0 ppb (30) 15.0 ppb (14) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 0.3 μg/m3 (1) 30.0
 
May 13, 2019, 5 p.m. 38.0 ppb (35) 18.0 ppb (17) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 0.8 μg/m3 (3) 35.0
 
May 13, 2019, 4 p.m. 37.0 ppb (34) 16.0 ppb (15) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 1.0 μg/m3 (4) 34.0