AQSQID: 230050029

Site Name: Portland - Deering Oaks

Location: Portland, ME

Reporting: True, Located: True

Current AQI: 27.0

Portland ME, US: 43.660248, -70.268967

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2019, 2 a.m. 6.4 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Jan. 22, 2019, 1 a.m. 5.9 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Jan. 22, 2019, midnight 6.6 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 11 p.m. 6.7 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 10 p.m. 6.7 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 9 p.m. 7.3 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 8 p.m. 5.4 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 7 p.m. 5.5 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 6 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, 5 p.m. 5.5 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
Jan. 21, 2019, 4 p.m. 6.9 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
Jan. 21, 2019, 3 p.m. 6.7 ppb (6) 2.3 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 2 p.m. 8.2 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 1 p.m. 6.6 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2019, noon 5.9 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, 11 a.m. 5.2 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 10 a.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 9 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2019, 8 a.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 7 a.m. 3.4 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 6 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2019, 5 a.m. 3.4 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 4 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 3 a.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, 2 a.m. 3.8 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2019, 1 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2019, midnight 4.0 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 11 p.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
Jan. 20, 2019, 10 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 9 p.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Jan. 20, 2019, 8 p.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Jan. 20, 2019, 7 p.m. 3.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Jan. 20, 2019, 6 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 5 p.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 4 p.m. 4.8 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 3 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Jan. 20, 2019, 2 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Jan. 20, 2019, 1 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Jan. 20, 2019, noon 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Jan. 20, 2019, 11 a.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
Jan. 20, 2019, 10 a.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
Jan. 20, 2019, 9 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Jan. 20, 2019, 8 a.m. 3.2 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2019, 7 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 6 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2019, 5 a.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 20, 2019, 4 a.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 3 a.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 2 a.m. 4.8 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 20, 2019, 1 a.m. 3.5 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, midnight 4.1 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 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 11 p.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 10 p.m. 6.8 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 9 p.m. 8.1 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 8 p.m. 8.3 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 7 p.m. 9.5 ppb (9) 3.2 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 6 p.m. 7.4 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, 5 p.m. 7.9 ppb (7) 3.3 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2019, 4 p.m. 7.5 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2019, 3 p.m. 7.4 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2019, 2 p.m. 9.1 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 23.0 μg/m3 (73) 73.0
 
Jan. 19, 2019, 1 p.m. 6.8 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2019, noon 8.2 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 19, 2019, 11 a.m. 8.0 ppb (7) 0.5 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 10 a.m. 6.4 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 9 a.m. 6.1 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 8 a.m. 6.9 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 7 a.m. 20.0 ppb (19) 0.5 ppb (0) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2019, 6 a.m. 16.7 ppb (15) 1.1 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 18.0 μg/m3 (63) 63.0
 
Jan. 19, 2019, 5 a.m. 13.1 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, 4 a.m. 12.6 ppb (12) 0.5 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2019, 3 a.m. 10.2 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2019, 2 a.m. 17.7 ppb (16) 0.5 ppb (0) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 19, 2019, 1 a.m. 17.8 ppb (16) 0.5 ppb (0) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 19, 2019, midnight 29.2 ppb (27) 1.5 ppb (1) N/A 28.0 ppb (26) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 21.0 μg/m3 (69) 69.0
 
Jan. 18, 2019, 11 p.m. 30.3 ppb (28) 1.0 ppb (1) N/A 29.0 ppb (27) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 18, 2019, 10 p.m. 35.7 ppb (33) 2.2 ppb (2) N/A 33.0 ppb (31) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 18, 2019, 9 p.m. 52.0 ppb (48) 13.6 ppb (13) N/A 38.0 ppb (35) N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 18, 2019, 8 p.m. 52.1 ppb (48) 17.1 ppb (16) N/A 35.0 ppb (32) N/A 1.0 ppb (1) 5.0 ppb (4) N/A N/A 21.0 μg/m3 (69) 69.0
 
Jan. 18, 2019, 7 p.m. 48.7 ppb (45) 17.6 ppb (16) N/A 31.0 ppb (29) N/A 1.0 ppb (1) 9.0 ppb (7) N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 18, 2019, 6 p.m. 43.8 ppb (41) 17.7 ppb (16) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 19.0 μg/m3 (65) 65.0
 
Jan. 18, 2019, 5 p.m. 45.2 ppb (42) 19.5 ppb (18) N/A 26.0 ppb (24) N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 19.0 μg/m3 (65) 65.0
 
Jan. 18, 2019, 4 p.m. 41.3 ppb (38) 16.8 ppb (16) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, 3 p.m. 28.0 ppb (26) 8.9 ppb (8) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, 2 p.m. 29.7 ppb (28) 10.9 ppb (10) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 18, 2019, 1 p.m. 22.9 ppb (21) 6.1 ppb (6) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 18, 2019, noon 24.2 ppb (22) 4.5 ppb (4) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 18, 2019, 11 a.m. 27.3 ppb (25) 4.0 ppb (4) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 18, 2019, 10 a.m. 28.5 ppb (26) 3.7 ppb (3) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 18, 2019, 9 a.m. 27.8 ppb (26) 2.1 ppb (2) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2019, 8 a.m. 21.4 ppb (20) 0.8 ppb (1) N/A 21.0 ppb (19) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2019, 7 a.m. 14.5 ppb (13) 0.4 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 18, 2019, 6 a.m. 14.7 ppb (14) 0.4 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2019, 5 a.m. 15.9 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2019, 4 a.m. 16.0 ppb (15) 0.5 ppb (0) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2019, 3 a.m. 13.0 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2019, 2 a.m. 17.6 ppb (16) 0.3 ppb (0) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2019, 1 a.m. 25.6 ppb (24) 0.4 ppb (0) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 18, 2019, midnight 20.9 ppb (19) 0.9 ppb (1) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 11 p.m. 14.9 ppb (14) 2.7 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2019, 10 p.m. 14.6 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2019, 9 p.m. 12.9 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 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 8 p.m. 9.5 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 7 p.m. 6.4 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 6 p.m. 4.8 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
Jan. 17, 2019, 5 p.m. 5.0 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 4 p.m. 6.5 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 3 p.m. 6.7 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2019, 2 p.m. 7.5 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 1 p.m. 11.0 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, noon 16.1 ppb (15) 2.4 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2019, 11 a.m. 12.9 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 10 a.m. 11.5 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2019, 9 a.m. 10.0 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2019, 8 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 7 a.m. 5.0 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 6 a.m. 4.3 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 5 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Jan. 17, 2019, 4 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2019, 3 a.m. 4.3 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2019, 2 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 1 a.m. 8.5 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 17, 2019, midnight 11.2 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2019, 11 p.m. 8.7 ppb (8) 0.1 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2019, 10 p.m. 10.2 ppb (9) 0.3 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2019, 9 p.m. 7.9 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2019, 8 p.m. 7.5 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2019, 7 p.m. 5.1 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2019, 6 p.m. 5.8 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2019, 5 p.m. 9.2 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2019, 4 p.m. 9.2 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 16, 2019, 3 p.m. 11.4 ppb (11) 4.6 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 16, 2019, 2 p.m. 15.7 ppb (15) 4.0 ppb (4) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2019, 1 p.m. 21.2 ppb (20) 4.2 ppb (4) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 16, 2019, noon 21.1 ppb (20) 4.0 ppb (4) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2019, 11 a.m. 25.0 ppb (23) 3.1 ppb (3) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 16, 2019, 10 a.m. 32.0 ppb (30) 6.9 ppb (6) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 16, 2019, 9 a.m. 29.5 ppb (27) 5.0 ppb (5) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 16, 2019, 8 a.m. 28.3 ppb (26) 4.4 ppb (4) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2019, 7 a.m. 42.0 ppb (39) 13.0 ppb (12) N/A 29.0 ppb (27) N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 16, 2019, 6 a.m. 60.7 ppb (57) 29.3 ppb (27) N/A 31.0 ppb (29) N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 20.0 μg/m3 (67) 67.0
 
Jan. 16, 2019, 5 a.m. 86.0 ppb (84) 51.6 ppb (48) N/A 34.0 ppb (31) N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 26.0 μg/m3 (80) 84.0
 
Jan. 16, 2019, 4 a.m. 87.8 ppb (86) 52.7 ppb (49) N/A 35.0 ppb (32) N/A 1.0 ppb (1) 2.0 ppb (2) N/A N/A 32.0 μg/m3 (93) 93.0
 
Jan. 16, 2019, 3 a.m. 124.9 ppb (105) 86.8 ppb (85) N/A 38.0 ppb (35) N/A 2.0 ppb (3) 2.0 ppb (2) N/A N/A 29.0 μg/m3 (86) 105.0
 
Jan. 16, 2019, 2 a.m. 131.5 ppb (106) 92.2 ppb (91) N/A 39.0 ppb (36) N/A 2.0 ppb (3) 2.0 ppb (2) N/A N/A 22.0 μg/m3 (71) 106.0
 
Jan. 16, 2019, 1 a.m. 89.8 ppb (88) 52.7 ppb (49) N/A 37.0 ppb (34) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 18.0 μg/m3 (63) 88.0
 
Jan. 16, 2019, midnight 88.0 ppb (86) 50.8 ppb (47) N/A 37.0 ppb (34) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 19.0 μg/m3 (65) 86.0
 
Jan. 15, 2019, 11 p.m. 63.2 ppb (60) 28.7 ppb (27) N/A 35.0 ppb (32) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 16.0 μg/m3 (59) 60.0
 
Jan. 15, 2019, 10 p.m. 30.1 ppb (28) 3.9 ppb (4) N/A 26.0 ppb (24) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, 9 p.m. 20.3 ppb (19) 1.8 ppb (2) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 15, 2019, 8 p.m. 6.8 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2019, 7 p.m. 5.0 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2019, 6 p.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2019, 5 p.m. 4.6 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 15, 2019, 4 p.m. 5.9 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2019, 3 p.m. 8.1 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2019, 2 p.m. 21.0 ppb (19) 8.3 ppb (8) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2019, 1 p.m. 40.7 ppb (38) 18.4 ppb (17) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, noon 56.4 ppb (53) 26.5 ppb (25) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2019, 11 a.m. 34.2 ppb (32) 6.8 ppb (6) N/A 27.0 ppb (25) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2019, 10 a.m. 25.2 ppb (23) 1.4 ppb (1) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2019, 9 a.m. 24.6 ppb (23) 1.4 ppb (1) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 15, 2019, 8 a.m. 23.8 ppb (22) 1.0 ppb (1) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2019, 7 a.m. 24.5 ppb (23) 0.9 ppb (1) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2019, 6 a.m. 26.5 ppb (25) 2.4 ppb (2) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2019, 5 a.m. 29.4 ppb (27) 4.0 ppb (4) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, 4 a.m. 43.2 ppb (40) 10.7 ppb (10) N/A 33.0 ppb (31) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 15, 2019, 3 a.m. 56.8 ppb (53) 23.7 ppb (22) N/A 33.0 ppb (31) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 20.0 μg/m3 (67) 67.0