ID: 2295

AQSQID: 421010048

Site Name: New

Added: April 21, 2020, 6:24 p.m.

Updated: Feb. 28, 2021, 6:32 a.m.

Location: Philadelphia (Richmond), PA

Reporting: True, Located: True

Current AQI: 76.0

Philadelphia (Richmond) PA, US: 39.991389, -75.080833

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 28, 2021, 5 a.m. N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) 0.0 ppb (0) 0.55 ppb (7) 30.9 μg/m3 (29) 23.8 μg/m3 (76) 76.0
 
Feb. 28, 2021, 4 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 0.0 ppb (0) 0.82 ppb (10) 28.9 μg/m3 (27) 22.3 μg/m3 (73) 73.0
 
Feb. 28, 2021, 3 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 2.0 ppb (2) 0.5 ppb (6) 25.2 μg/m3 (24) 19.7 μg/m3 (67) 67.0
 
Feb. 28, 2021, 2 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 4.0 ppb (4) 0.49 ppb (6) 22.7 μg/m3 (22) 17.4 μg/m3 (63) 63.0
 
Feb. 28, 2021, 1 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 16.0 ppb (15) 0.47 ppb (6) 19.3 μg/m3 (18) 14.3 μg/m3 (56) 56.0
 
Feb. 28, 2021, midnight N/A N/A N/A 17.0 ppb (17) N/A N/A 22.0 ppb (21) 0.37 ppb (5) 18.6 μg/m3 (18) 13.9 μg/m3 (55) 55.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 24.0 ppb (23) N/A 19.9 μg/m3 (19) 14.2 μg/m3 (56) 56.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 29.0 ppb (27) 0.33 ppb (4) 18.5 μg/m3 (18) 13.6 μg/m3 (55) 55.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 34.0 ppb (32) 0.31 ppb (4) 15.2 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 36.0 ppb (34) 0.3 ppb (4) 12.7 μg/m3 (12) 8.1 μg/m3 (34) 34.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 35.0 ppb (33) 0.31 ppb (4) 11.4 μg/m3 (11) 7.2 μg/m3 (31) 33.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 34.0 ppb (32) 0.31 ppb (4) 14.4 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 15.0 ppb (14) 0.58 ppb (7) 22.8 μg/m3 (22) 15.2 μg/m3 (58) 58.0
 
Feb. 27, 2021, 4 p.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) 8.0 ppb (8) 0.56 ppb (7) 14.7 μg/m3 (14) 10.5 μg/m3 (44) 44.0
 
Feb. 27, 2021, 3 p.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 10.0 ppb (10) 0.48 ppb (6) 12.2 μg/m3 (12) 8.7 μg/m3 (37) 37.0
 
Feb. 27, 2021, 2 p.m. N/A N/A N/A 32.0 ppb (31) N/A 0.0 ppb (0) 12.0 ppb (12) 0.4 ppb (5) 12.3 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Feb. 27, 2021, 1 p.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 23.0 ppb (22) 0.28 ppb (4) 11.3 μg/m3 (11) 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, noon N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 29.0 ppb (27) 0.24 ppb (3) 11.0 μg/m3 (11) 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 32.0 ppb (30) 0.24 ppb (3) 10.3 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Feb. 27, 2021, 10 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (30) 0.22 ppb (3) 10.3 μg/m3 (10) 7.2 μg/m3 (31) 31.0
 
Feb. 27, 2021, 9 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 34.0 ppb (32) 0.23 ppb (3) 10.0 μg/m3 (10) 7.2 μg/m3 (31) 32.0
 
Feb. 27, 2021, 8 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (31) 0.23 ppb (3) 9.1 μg/m3 (9) 6.2 μg/m3 (26) 31.0
 
Feb. 27, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.22 ppb (3) 9.2 μg/m3 (9) 5.8 μg/m3 (25) 33.0
 
Feb. 27, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.21 ppb (3) 9.0 μg/m3 (9) 5.4 μg/m3 (23) 33.0
 
Feb. 27, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.22 ppb (3) 10.2 μg/m3 (10) 6.0 μg/m3 (25) 33.0
 
Feb. 27, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) 10.4 μg/m3 (10) 5.5 μg/m3 (23) 35.0
 
Feb. 27, 2021, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (35) 0.24 ppb (3) 10.0 μg/m3 (10) 5.1 μg/m3 (22) 35.0
 
Feb. 27, 2021, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (38) 0.21 ppb (3) 9.4 μg/m3 (9) 4.8 μg/m3 (20) 38.0
 
Feb. 27, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (34) 0.21 ppb (3) 9.0 μg/m3 (9) 4.6 μg/m3 (20) 34.0
 
Feb. 27, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (3) 8.4 μg/m3 (8) 4.4 μg/m3 (19) 19.0
 
Feb. 26, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (38) N/A 8.4 μg/m3 (8) 4.4 μg/m3 (19) 38.0
 
Feb. 26, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) 10.2 μg/m3 (10) 3.9 μg/m3 (17) 38.0
 
Feb. 26, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (38) 0.22 ppb (3) 10.6 μg/m3 (10) 4.7 μg/m3 (20) 38.0
 
Feb. 26, 2021, 8 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (37) 0.22 ppb (3) 13.1 μg/m3 (13) 5.6 μg/m3 (24) 37.0
 
Feb. 26, 2021, 7 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 40.0 ppb (38) 0.23 ppb (3) 13.7 μg/m3 (13) 5.7 μg/m3 (24) 38.0
 
Feb. 26, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (39) 0.21 ppb (3) 12.9 μg/m3 (12) 5.7 μg/m3 (24) 39.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.2 ppb (3) 11.5 μg/m3 (11) 5.5 μg/m3 (23) 40.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) 11.0 μg/m3 (11) 5.1 μg/m3 (22) 38.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (38) 0.24 ppb (3) 11.7 μg/m3 (11) 5.0 μg/m3 (21) 38.0
 
Feb. 26, 2021, 2 p.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 34.0 ppb (32) 0.24 ppb (3) 14.7 μg/m3 (14) 5.6 μg/m3 (24) 32.0
 
Feb. 26, 2021, 1 p.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 19.0 ppb (18) 0.36 ppb (5) 27.3 μg/m3 (26) 8.3 μg/m3 (35) 35.0
 
Feb. 26, 2021, noon N/A N/A N/A 39.0 ppb (37) N/A 1.0 ppb (2) 7.0 ppb (7) 0.41 ppb (5) 29.8 μg/m3 (28) 8.7 μg/m3 (37) 37.0
 
Feb. 26, 2021, 11 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 12.0 ppb (12) 0.37 ppb (5) 20.8 μg/m3 (20) 6.9 μg/m3 (29) 30.0
 
Feb. 26, 2021, 10 a.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 22.0 ppb (21) 0.28 ppb (4) 16.9 μg/m3 (16) 6.3 μg/m3 (27) 27.0
 
Feb. 26, 2021, 9 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 25.0 ppb (24) 0.27 ppb (4) 13.6 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A 26.0 ppb (25) N/A 1.0 ppb (2) 16.0 ppb (15) 0.34 ppb (4) 13.9 μg/m3 (13) 7.2 μg/m3 (31) 31.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 10.0 ppb (10) 0.4 ppb (5) 16.4 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 14.0 ppb (13) 0.4 ppb (5) 15.5 μg/m3 (15) 8.0 μg/m3 (34) 34.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 15.0 ppb (14) 0.44 ppb (5) 16.8 μg/m3 (16) 7.7 μg/m3 (33) 33.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A 41.0 ppb (39) N/A 1.0 ppb (2) 4.0 ppb (4) 0.6 ppb (7) 24.3 μg/m3 (23) 11.3 μg/m3 (48) 48.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A 43.0 ppb (41) N/A 0.0 ppb (0) 4.0 ppb (4) 0.63 ppb (7) 27.2 μg/m3 (26) 10.9 μg/m3 (46) 46.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 10.0 ppb (10) 0.52 ppb (6) 24.5 μg/m3 (23) 10.2 μg/m3 (43) 43.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A 29.0 ppb (28) N/A 0.0 ppb (0) 19.0 ppb (18) 0.46 ppb (6) 24.7 μg/m3 (23) 10.0 μg/m3 (42) 42.0
 
Feb. 26, 2021, midnight N/A N/A N/A 24.0 ppb (23) N/A N/A 25.0 ppb (24) 0.38 ppb (5) 19.9 μg/m3 (19) 8.0 μg/m3 (34) 34.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 32.0 ppb (30) N/A 14.9 μg/m3 (14) 7.1 μg/m3 (30) 30.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 40.0 ppb (38) 0.28 ppb (4) 14.2 μg/m3 (14) 5.9 μg/m3 (25) 38.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (41) 0.26 ppb (4) 13.9 μg/m3 (13) 5.6 μg/m3 (24) 41.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 44.0 ppb (41) 0.25 ppb (3) 15.2 μg/m3 (15) 5.5 μg/m3 (23) 41.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 43.0 ppb (40) 0.24 ppb (3) 13.5 μg/m3 (13) 5.9 μg/m3 (25) 40.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 42.0 ppb (39) 0.24 ppb (3) 15.2 μg/m3 (15) 5.4 μg/m3 (23) 39.0
 
Feb. 25, 2021, 5 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 40.0 ppb (38) 0.24 ppb (3) 13.7 μg/m3 (13) 5.1 μg/m3 (22) 38.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (38) 0.23 ppb (3) 18.7 μg/m3 (18) 5.1 μg/m3 (22) 38.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 16.8 μg/m3 (16) 4.7 μg/m3 (20) 33.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) 18.1 μg/m3 (17) 4.4 μg/m3 (19) 28.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 33.0 ppb (31) 0.24 ppb (3) 15.4 μg/m3 (15) 4.8 μg/m3 (20) 31.0
 
Feb. 25, 2021, noon N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 30.0 ppb (28) 0.27 ppb (4) 14.3 μg/m3 (14) 4.2 μg/m3 (18) 28.0
 
Feb. 25, 2021, 11 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 32.0 ppb (30) 0.27 ppb (4) 14.8 μg/m3 (14) 6.3 μg/m3 (27) 30.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 36.0 ppb (34) 0.25 ppb (3) 17.5 μg/m3 (17) 8.4 μg/m3 (36) 36.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 41.0 ppb (38) 0.23 ppb (3) 20.4 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (40) 0.23 ppb (3) 17.7 μg/m3 (17) 9.1 μg/m3 (38) 40.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 16.7 μg/m3 (16) 8.4 μg/m3 (36) 36.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A 26.0 ppb (25) N/A 0.0 ppb (0) 17.0 ppb (16) 0.32 ppb (4) 17.5 μg/m3 (17) 8.2 μg/m3 (35) 35.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 23.0 ppb (22) 0.32 ppb (4) 14.9 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
Feb. 25, 2021, 4 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 23.0 ppb (22) 0.35 ppb (4) 16.6 μg/m3 (16) 7.4 μg/m3 (31) 31.0
 
Feb. 25, 2021, 3 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 31.0 ppb (29) 0.28 ppb (4) 16.9 μg/m3 (16) 7.4 μg/m3 (31) 31.0
 
Feb. 25, 2021, 2 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 31.0 ppb (29) 0.24 ppb (3) 19.0 μg/m3 (18) 9.6 μg/m3 (40) 40.0
 
Feb. 25, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 34.0 ppb (32) 0.26 ppb (4) 14.2 μg/m3 (14) 6.1 μg/m3 (26) 32.0
 
Feb. 25, 2021, midnight N/A N/A N/A 22.0 ppb (21) N/A N/A N/A 0.26 ppb (4) 13.6 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 34.0 ppb (32) N/A 12.8 μg/m3 (12) 4.8 μg/m3 (20) 32.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 42.0 ppb (39) 0.22 ppb (3) 11.8 μg/m3 (11) 4.2 μg/m3 (18) 39.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (43) 0.21 ppb (3) 14.4 μg/m3 (14) 5.1 μg/m3 (22) 43.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (43) 0.22 ppb (3) 17.3 μg/m3 (17) 7.3 μg/m3 (31) 43.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (43) 0.22 ppb (3) 18.6 μg/m3 (18) 6.8 μg/m3 (29) 43.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (42) 0.21 ppb (3) 19.5 μg/m3 (19) 5.8 μg/m3 (25) 42.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) 14.6 μg/m3 (14) 5.7 μg/m3 (24) 38.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 36.0 ppb (34) 0.25 ppb (3) 20.1 μg/m3 (19) 9.6 μg/m3 (40) 40.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (2) 29.0 ppb (27) 0.31 ppb (4) 26.7 μg/m3 (25) 12.6 μg/m3 (53) 53.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A 27.0 ppb (26) N/A 1.0 ppb (2) 19.0 ppb (18) 0.36 ppb (5) 28.7 μg/m3 (27) 14.5 μg/m3 (57) 57.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A 37.0 ppb (35) N/A 2.0 ppb (3) 11.0 ppb (11) 0.45 ppb (6) 33.8 μg/m3 (32) 16.8 μg/m3 (61) 61.0
 
Feb. 24, 2021, noon N/A N/A N/A 41.0 ppb (39) N/A 1.0 ppb (2) 4.0 ppb (4) 0.51 ppb (6) 25.4 μg/m3 (24) 15.0 μg/m3 (58) 58.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A 43.0 ppb (41) N/A 1.0 ppb (2) 1.0 ppb (1) 0.45 ppb (6) 23.2 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 ppb (5) 0.4 ppb (5) 15.9 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A 32.0 ppb (31) N/A N/A 11.0 ppb (11) 0.33 ppb (4) 16.3 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A 23.0 ppb (22) N/A N/A 18.0 ppb (17) 0.29 ppb (4) 15.4 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 14.7 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 22.0 ppb (21) N/A 13.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) 12.9 μg/m3 (12) 7.7 μg/m3 (33) 33.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 31.0 ppb (29) 0.24 ppb (3) 12.5 μg/m3 (12) 6.7 μg/m3 (28) 29.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 32.0 ppb (30) 0.26 ppb (4) 13.1 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 24.0 ppb (23) 0.34 ppb (4) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 32.0 ppb (30) 0.28 ppb (4) 13.8 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
Feb. 24, 2021, midnight N/A N/A N/A 13.0 ppb (13) N/A N/A 31.0 ppb (29) 0.3 ppb (4) 15.9 μg/m3 (15) 8.9 μg/m3 (38) 38.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 31.0 ppb (29) N/A 16.4 μg/m3 (16) 8.8 μg/m3 (37) 37.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 35.0 ppb (33) 0.29 ppb (4) 15.2 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 39.0 ppb (37) 0.29 ppb (4) 17.3 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 36.0 ppb (34) 0.29 ppb (4) 18.2 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 33.0 ppb (31) 0.27 ppb (4) 16.8 μg/m3 (16) 9.9 μg/m3 (42) 42.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 30.0 ppb (28) 0.27 ppb (4) 16.2 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 29.0 ppb (27) 0.28 ppb (4) 20.4 μg/m3 (19) 12.3 μg/m3 (52) 52.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (2) 25.0 ppb (24) 0.31 ppb (4) 21.7 μg/m3 (21) 15.4 μg/m3 (58) 58.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (2) 25.0 ppb (24) 0.3 ppb (4) 21.0 μg/m3 (20) 15.5 μg/m3 (59) 59.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 22.0 ppb (21) 0.31 ppb (4) 18.8 μg/m3 (18) 14.7 μg/m3 (57) 57.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 14.0 ppb (13) 0.34 ppb (4) 25.0 μg/m3 (24) 16.5 μg/m3 (61) 61.0
 
Feb. 23, 2021, noon N/A N/A N/A 37.0 ppb (35) N/A 0.0 ppb (0) N/A 0.38 ppb (5) 21.7 μg/m3 (21) 15.3 μg/m3 (58) 58.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A 33.0 ppb (32) N/A 0.0 ppb (0) 12.0 ppb (12) 0.34 ppb (4) 18.5 μg/m3 (18) 14.5 μg/m3 (57) 57.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 12.0 ppb (12) 0.34 ppb (4) 17.7 μg/m3 (17) 14.3 μg/m3 (56) 56.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 17.0 ppb (16) 0.31 ppb (4) 17.6 μg/m3 (17) 14.5 μg/m3 (57) 57.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 20.0 ppb (19) 0.32 ppb (4) 18.9 μg/m3 (18) 15.9 μg/m3 (59) 59.0
 
Feb. 23, 2021, 7 a.m. N/A N/A N/A 17.0 ppb (17) N/A 0.0 ppb (0) 21.0 ppb (20) 0.3 ppb (4) 18.9 μg/m3 (18) 16.5 μg/m3 (61) 61.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 9.0 ppb (9) 0.37 ppb (5) 25.3 μg/m3 (24) 21.4 μg/m3 (71) 71.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 7.0 ppb (7) 0.38 ppb (5) 27.2 μg/m3 (26) 23.2 μg/m3 (75) 75.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A 32.0 ppb (31) N/A 0.0 ppb (0) 6.0 ppb (6) 0.41 ppb (5) 28.5 μg/m3 (27) 22.3 μg/m3 (73) 73.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 13.0 ppb (13) 0.41 ppb (5) 23.1 μg/m3 (22) 20.2 μg/m3 (69) 69.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A 27.0 ppb (26) N/A 0.0 ppb (0) 11.0 ppb (11) 0.42 ppb (5) 21.8 μg/m3 (21) 19.9 μg/m3 (68) 68.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A 29.0 ppb (28) N/A 0.0 ppb (0) 10.0 ppb (10) 0.38 ppb (5) 20.9 μg/m3 (20) 18.7 μg/m3 (65) 65.0
 
Feb. 23, 2021, midnight N/A N/A N/A 28.0 ppb (27) N/A N/A N/A 0.4 ppb (5) 18.4 μg/m3 (18) 16.2 μg/m3 (60) 60.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A 28.0 ppb (27) N/A 0.0 ppb (0) 15.0 ppb (14) N/A 17.6 μg/m3 (17) 14.1 μg/m3 (56) 56.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A 25.0 ppb (24) N/A 0.0 ppb (0) 19.0 ppb (18) 0.35 ppb (4) 15.9 μg/m3 (15) 12.6 μg/m3 (53) 53.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) 12.0 ppb (12) 0.4 ppb (5) 16.8 μg/m3 (16) 13.0 μg/m3 (53) 53.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 9.0 ppb (9) 0.47 ppb (6) N/A N/A 36.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A 35.0 ppb (34) N/A 0.0 ppb (0) 12.0 ppb (12) 0.39 ppb (5) N/A N/A 34.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A 36.0 ppb (34) N/A 0.0 ppb (0) 13.0 ppb (13) 0.49 ppb (6) N/A N/A 34.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A 38.0 ppb (36) N/A 0.0 ppb (0) 11.0 ppb (11) 0.33 ppb (4) N/A N/A 36.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A 21.0 ppb (20) N/A 0.0 ppb (0) 26.0 ppb (25) 0.25 ppb (3) N/A N/A 25.0
 
Feb. 22, 2021, 3 p.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 32.0 ppb (30) 0.24 ppb (3) 16.5 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 31.0 ppb (29) 0.26 ppb (4) 19.3 μg/m3 (18) 13.1 μg/m3 (54) 54.0
 
Feb. 22, 2021, 1 p.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 35.0 ppb (33) 0.26 ppb (4) 18.3 μg/m3 (17) 13.7 μg/m3 (55) 55.0
 
Feb. 22, 2021, noon N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) 18.0 μg/m3 (17) 13.9 μg/m3 (55) 55.0
 
Feb. 22, 2021, 11 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 33.0 ppb (31) 0.24 ppb (3) 17.1 μg/m3 (16) 13.8 μg/m3 (55) 55.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 34.0 ppb (32) 0.23 ppb (3) 17.7 μg/m3 (17) 14.2 μg/m3 (56) 56.0
 
Feb. 22, 2021, 9 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 28.0 ppb (26) 0.24 ppb (3) 17.6 μg/m3 (17) 13.6 μg/m3 (55) 55.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 29.0 ppb (27) 0.25 ppb (3) 18.8 μg/m3 (18) 14.3 μg/m3 (56) 56.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 30.0 ppb (28) 0.27 ppb (4) 20.5 μg/m3 (19) 15.8 μg/m3 (59) 59.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 27.0 ppb (25) 0.28 ppb (4) 23.1 μg/m3 (22) 18.2 μg/m3 (64) 64.0
 
Feb. 22, 2021, 5 a.m. N/A N/A N/A 36.0 ppb (34) N/A 0.0 ppb (0) 13.0 ppb (13) 0.37 ppb (5) 30.5 μg/m3 (29) 23.3 μg/m3 (75) 75.0
 
Feb. 22, 2021, 4 a.m. N/A N/A N/A 42.0 ppb (40) N/A 0.0 ppb (0) 9.0 ppb (9) 0.43 ppb (5) 34.3 μg/m3 (32) 26.3 μg/m3 (81) 81.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A 43.0 ppb (41) N/A 0.0 ppb (0) 10.0 ppb (10) 0.44 ppb (5) 37.5 μg/m3 (35) 26.7 μg/m3 (82) 82.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A 30.0 ppb (29) N/A 0.0 ppb (0) 20.0 ppb (19) 0.45 ppb (6) 30.4 μg/m3 (29) 23.4 μg/m3 (75) 75.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A 31.0 ppb (30) N/A 0.0 ppb (0) 23.0 ppb (22) 0.45 ppb (6) 32.2 μg/m3 (30) 23.0 μg/m3 (74) 74.0
 
Feb. 22, 2021, midnight N/A N/A N/A 16.0 ppb (16) N/A N/A 36.0 ppb (34) 0.3 ppb (4) 28.5 μg/m3 (27) 21.0 μg/m3 (70) 70.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 34.0 ppb (32) N/A 24.6 μg/m3 (23) 17.4 μg/m3 (63) 63.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 43.0 ppb (40) 0.29 ppb (4) 21.3 μg/m3 (20) 15.7 μg/m3 (59) 59.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (46) 0.24 ppb (3) 19.4 μg/m3 (18) 14.4 μg/m3 (56) 56.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (47) 0.25 ppb (3) 24.9 μg/m3 (24) 18.1 μg/m3 (64) 64.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (46) 0.24 ppb (3) 18.8 μg/m3 (18) 14.1 μg/m3 (56) 56.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (44) 0.24 ppb (3) 19.3 μg/m3 (18) 14.4 μg/m3 (56) 56.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (43) 0.24 ppb (3) 19.6 μg/m3 (19) 15.5 μg/m3 (59) 59.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (41) 0.24 ppb (3) 20.3 μg/m3 (19) 15.8 μg/m3 (59) 59.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (39) 0.26 ppb (4) 22.1 μg/m3 (21) 17.9 μg/m3 (64) 64.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 39.0 ppb (37) 0.27 ppb (4) 25.5 μg/m3 (24) 21.0 μg/m3 (70) 70.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 38.0 ppb (36) 0.26 ppb (4) 26.2 μg/m3 (25) 22.2 μg/m3 (73) 73.0
 
Feb. 21, 2021, noon N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 34.0 ppb (32) 0.28 ppb (4) 27.1 μg/m3 (26) 23.5 μg/m3 (75) 75.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 32.0 ppb (30) 0.27 ppb (4) 27.4 μg/m3 (26) 24.2 μg/m3 (77) 77.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A 12.0 ppb (12) N/A 0.0 ppb (0) 34.0 ppb (32) 0.26 ppb (4) 30.1 μg/m3 (28) 25.6 μg/m3 (80) 80.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) 27.2 μg/m3 (26) 24.9 μg/m3 (78) 78.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 36.0 ppb (34) 0.26 ppb (4) 27.9 μg/m3 (26) 25.2 μg/m3 (79) 79.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 38.0 ppb (36) 0.25 ppb (3) 27.7 μg/m3 (26) 25.3 μg/m3 (79) 79.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (38) 0.24 ppb (3) 28.9 μg/m3 (27) 25.1 μg/m3 (79) 79.0