AQSQID: 245100040

Site Name: Oldtown

Location: Baltimore (Old Town), MD

Reporting: True, Located: True

Current AQI: 101.0

Baltimore (Old Town) MD, US: 39.2981, -76.604698

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Dec. 1, 2019, 3 a.m. 23.6 ppb (22) 5.6 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Dec. 1, 2019, 2 a.m. 17.4 ppb (16) 2.7 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Dec. 1, 2019, 1 a.m. 28.7 ppb (27) 4.2 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 27.0
 
Dec. 1, 2019, midnight 22.8 ppb (21) 3.5 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 30, 2019, 11 p.m. 23.6 ppb (22) 3.7 ppb (3) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 30, 2019, 10 p.m. 21.8 ppb (20) 2.7 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 30, 2019, 9 p.m. 39.2 ppb (36) 10.9 ppb (10) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 30, 2019, 8 p.m. 38.5 ppb (36) 12.2 ppb (11) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 30, 2019, 7 p.m. 25.2 ppb (23) 7.6 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 23.0
 
Nov. 30, 2019, 6 p.m. 18.6 ppb (17) 6.5 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 5 p.m. 10.9 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 10.0
 
Nov. 30, 2019, 4 p.m. 11.0 ppb (10) 4.7 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 30, 2019, 3 p.m. 11.4 ppb (11) 4.3 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 2 p.m. 10.8 ppb (10) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 1 p.m. 12.5 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 30, 2019, noon 12.5 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 11 a.m. 10.5 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 30, 2019, 10 a.m. 7.9 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 30, 2019, 9 a.m. 7.2 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 8 a.m. 7.0 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 30, 2019, 7 a.m. 6.5 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 6 a.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 5 a.m. 8.4 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 30, 2019, 4 a.m. 8.8 ppb (8) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 30, 2019, 3 a.m. 11.5 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 30, 2019, 2 a.m. 11.6 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 30, 2019, 1 a.m. 12.4 ppb (11) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 30, 2019, midnight 12.2 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2019, 11 p.m. 11.1 ppb (10) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 29, 2019, 10 p.m. 12.7 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 29, 2019, 9 p.m. 12.6 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2019, 8 p.m. 12.6 ppb (12) 5.3 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2019, 7 p.m. 8.1 ppb (8) 3.3 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 29, 2019, 6 p.m. 5.9 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 29, 2019, 5 p.m. 7.0 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2019, 4 p.m. 5.7 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2019, 3 p.m. 6.6 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 29, 2019, 2 p.m. 7.4 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 29, 2019, 1 p.m. 9.1 ppb (8) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2019, noon 11.5 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 29, 2019, 11 a.m. 13.2 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 29, 2019, 10 a.m. 10.9 ppb (10) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2019, 9 a.m. 6.7 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2019, 8 a.m. 5.1 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 29, 2019, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 29, 2019, 6 a.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2019, 5 a.m. 3.4 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 29, 2019, 4 a.m. 3.8 ppb (4) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2019, 3 a.m. 4.6 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 29, 2019, 2 a.m. 4.4 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Nov. 29, 2019, 1 a.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Nov. 29, 2019, midnight 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Nov. 28, 2019, 11 p.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Nov. 28, 2019, 10 p.m. 4.1 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.0
 
Nov. 28, 2019, 9 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Nov. 28, 2019, 8 p.m. 2.8 ppb (3) 0.8 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
 
Nov. 28, 2019, 7 p.m. 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 3.0
 
Nov. 28, 2019, 6 p.m. 2.8 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -2.0 μg/m3 (0) 3.0
 
Nov. 28, 2019, 5 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 28, 2019, 4 p.m. 4.1 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 28, 2019, 3 p.m. 4.7 ppb (4) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 4.0
 
Nov. 28, 2019, 2 p.m. 4.6 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 4.0
 
Nov. 28, 2019, 1 p.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 4.0
 
Nov. 28, 2019, noon 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
Nov. 28, 2019, 11 a.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
Nov. 28, 2019, 10 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 2.0
 
Nov. 28, 2019, 9 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 2.0
 
Nov. 28, 2019, 8 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 2.0
 
Nov. 28, 2019, 7 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 3.0
 
Nov. 28, 2019, 6 a.m. 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
Nov. 28, 2019, 5 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 4.0
 
Nov. 28, 2019, 4 a.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
Nov. 28, 2019, 3 a.m. 6.4 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 6.0
 
Nov. 28, 2019, 2 a.m. 8.3 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A N/A 8.0
 
Nov. 28, 2019, 1 a.m. 9.0 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 28, 2019, midnight 13.0 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 27, 2019, 11 p.m. 12.1 ppb (11) 1.3 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A N/A 11.0
 
Nov. 27, 2019, 10 p.m. 18.2 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 17.0
 
Nov. 27, 2019, 9 p.m. 17.3 ppb (16) 3.7 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 27, 2019, 8 p.m. 15.5 ppb (14) 3.7 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 27, 2019, 7 p.m. 16.5 ppb (15) 4.2 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Nov. 27, 2019, 6 p.m. 17.4 ppb (16) 4.2 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 27, 2019, 5 p.m. 18.0 ppb (17) 5.8 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Nov. 27, 2019, 4 p.m. 20.3 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Nov. 27, 2019, 3 p.m. 29.4 ppb (27) 9.4 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Nov. 27, 2019, 2 p.m. 43.6 ppb (40) 16.6 ppb (15) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 19.0 μg/m3 (65) 65.0
 
Nov. 27, 2019, 1 p.m. 65.4 ppb (62) 34.7 ppb (32) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A N/A 62.0
 
Nov. 27, 2019, noon 77.0 ppb (74) 45.4 ppb (42) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A N/A 74.0
 
Nov. 27, 2019, 11 a.m. 60.3 ppb (57) 28.5 ppb (26) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A N/A 57.0
 
Nov. 27, 2019, 10 a.m. 39.2 ppb (36) 9.4 ppb (9) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A N/A 36.0
 
Nov. 27, 2019, 9 a.m. 34.1 ppb (32) 5.4 ppb (5) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A N/A 32.0
 
Nov. 27, 2019, 8 a.m. 31.5 ppb (29) 3.3 ppb (3) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A N/A 29.0
 
Nov. 27, 2019, 7 a.m. 43.9 ppb (41) 11.3 ppb (10) N/A 33.0 ppb (31) N/A N/A N/A N/A N/A N/A 41.0
 
Nov. 27, 2019, 6 a.m. 74.7 ppb (72) 40.9 ppb (38) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A N/A 72.0
 
Nov. 27, 2019, 5 a.m. 61.2 ppb (58) 25.6 ppb (24) N/A 36.0 ppb (33) N/A N/A N/A N/A N/A N/A 58.0
 
Nov. 27, 2019, 4 a.m. 73.2 ppb (70) 36.0 ppb (33) N/A 37.0 ppb (34) N/A N/A N/A N/A N/A N/A 70.0
 
Nov. 27, 2019, 3 a.m. 78.4 ppb (76) 39.2 ppb (36) N/A 39.0 ppb (36) N/A N/A N/A N/A N/A N/A 76.0
 
Nov. 27, 2019, 2 a.m. 74.8 ppb (72) 33.7 ppb (31) N/A 41.0 ppb (38) N/A N/A N/A N/A N/A N/A 72.0
 
Nov. 27, 2019, 1 a.m. 82.8 ppb (81) 39.3 ppb (36) N/A 43.0 ppb (40) N/A N/A N/A N/A N/A N/A 81.0
 
Nov. 27, 2019, midnight 80.7 ppb (78) 34.8 ppb (32) N/A 46.0 ppb (43) N/A N/A N/A N/A N/A N/A 78.0
 
Nov. 26, 2019, 11 p.m. 52.7 ppb (49) 10.4 ppb (10) N/A 42.0 ppb (39) N/A N/A N/A N/A N/A N/A 49.0
 
Nov. 26, 2019, 10 p.m. 57.5 ppb (54) 14.5 ppb (13) N/A 43.0 ppb (40) N/A N/A N/A N/A N/A N/A 54.0
 
Nov. 26, 2019, 9 p.m. 46.4 ppb (43) 12.1 ppb (11) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A N/A 43.0
 
Nov. 26, 2019, 8 p.m. 46.8 ppb (43) 18.1 ppb (17) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Nov. 26, 2019, 7 p.m. 59.0 ppb (55) 27.2 ppb (25) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 55.0
 
Nov. 26, 2019, 6 p.m. 52.4 ppb (49) 22.9 ppb (21) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 49.0
 
Nov. 26, 2019, 5 p.m. 75.1 ppb (72) 39.6 ppb (37) N/A 36.0 ppb (33) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 72.0
 
Nov. 26, 2019, 4 p.m. 88.0 ppb (86) 49.5 ppb (46) N/A 38.0 ppb (35) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 86.0
 
Nov. 26, 2019, 3 p.m. 85.1 ppb (83) 51.3 ppb (48) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 19.0 μg/m3 (65) 83.0
 
Nov. 26, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Nov. 26, 2019, 1 p.m. 162.6 ppb (112) 125.2 ppb (105) N/A 37.0 ppb (34) N/A N/A N/A N/A N/A N/A 112.0
 
Nov. 26, 2019, noon 161.5 ppb (112) 127.9 ppb (105) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 112.0
 
Nov. 26, 2019, 11 a.m. 120.2 ppb (104) 92.2 ppb (91) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 104.0
 
Nov. 26, 2019, 10 a.m. 102.8 ppb (100) 75.8 ppb (73) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 100.0
 
Nov. 26, 2019, 9 a.m. 103.0 ppb (100) 73.3 ppb (71) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 100.0
 
Nov. 26, 2019, 8 a.m. 98.3 ppb (97) 69.6 ppb (67) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 97.0
 
Nov. 26, 2019, 7 a.m. 90.3 ppb (89) 61.7 ppb (58) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 89.0
 
Nov. 26, 2019, 6 a.m. 83.6 ppb (81) 47.5 ppb (44) N/A 36.0 ppb (33) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 81.0
 
Nov. 26, 2019, 5 a.m. 57.8 ppb (54) 18.8 ppb (17) N/A 39.0 ppb (36) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Nov. 26, 2019, 4 a.m. 45.2 ppb (42) 8.0 ppb (7) N/A 37.0 ppb (34) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Nov. 26, 2019, 3 a.m. 44.6 ppb (41) 10.4 ppb (10) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Nov. 26, 2019, 2 a.m. 33.9 ppb (31) 4.9 ppb (5) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 26, 2019, 1 a.m. 34.0 ppb (31) 6.1 ppb (6) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 31.0
 
Nov. 26, 2019, midnight 33.9 ppb (31) 6.3 ppb (6) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 31.0
 
Nov. 25, 2019, 11 p.m. 29.2 ppb (27) 4.3 ppb (4) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 25, 2019, 10 p.m. 26.7 ppb (25) 5.5 ppb (5) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2019, 9 p.m. 25.4 ppb (24) 6.0 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 25, 2019, 8 p.m. 28.6 ppb (26) 9.2 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 26.0
 
Nov. 25, 2019, 7 p.m. 36.3 ppb (34) 13.4 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 25, 2019, 6 p.m. 34.1 ppb (32) 13.3 ppb (12) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Nov. 25, 2019, 5 p.m. 26.7 ppb (25) 10.0 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 25, 2019, 4 p.m. 16.1 ppb (15) 6.5 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 25, 2019, 3 p.m. 17.5 ppb (16) 6.2 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 25, 2019, 2 p.m. 73.1 ppb (70) 42.5 ppb (39) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 70.0
 
Nov. 25, 2019, 1 p.m. 102.8 ppb (100) 66.1 ppb (63) N/A 37.0 ppb (34) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 100.0
 
Nov. 25, 2019, noon 107.2 ppb (101) 68.5 ppb (65) N/A 39.0 ppb (36) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 101.0
 
Nov. 25, 2019, 11 a.m. 62.5 ppb (59) 27.2 ppb (25) N/A 35.0 ppb (32) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 59.0
 
Nov. 25, 2019, 10 a.m. 51.4 ppb (48) 19.2 ppb (18) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 48.0
 
Nov. 25, 2019, 9 a.m. 38.8 ppb (36) 8.0 ppb (7) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Nov. 25, 2019, 8 a.m. 31.2 ppb (29) 5.4 ppb (5) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 25, 2019, 7 a.m. 16.5 ppb (15) 2.9 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2019, 6 a.m. 27.2 ppb (25) 4.7 ppb (4) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Nov. 25, 2019, 5 a.m. 19.1 ppb (18) 2.3 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Nov. 25, 2019, 4 a.m. 15.0 ppb (14) 1.1 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2019, 3 a.m. 11.0 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2019, 2 a.m. 8.0 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Nov. 25, 2019, 1 a.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Nov. 25, 2019, midnight 8.7 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 24, 2019, 11 p.m. 7.6 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 24, 2019, 10 p.m. 6.7 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Nov. 24, 2019, 9 p.m. 7.0 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 8 p.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Nov. 24, 2019, 7 p.m. 5.4 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 5.0
 
Nov. 24, 2019, 6 p.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.0
 
Nov. 24, 2019, 5 p.m. 6.1 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 6.0
 
Nov. 24, 2019, 4 p.m. 6.5 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Nov. 24, 2019, 3 p.m. 5.7 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Nov. 24, 2019, 2 p.m. 12.0 ppb (11) 5.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 1 p.m. 9.1 ppb (8) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Nov. 24, 2019, noon 10.1 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 11 a.m. 9.1 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 10 a.m. 7.0 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 24, 2019, 9 a.m. 7.5 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 8 a.m. 8.2 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Nov. 24, 2019, 7 a.m. 9.1 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Nov. 24, 2019, 6 a.m. 12.4 ppb (11) 1.9 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 5 a.m. 15.4 ppb (14) 2.5 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 24, 2019, 4 a.m. 12.2 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0