ID: 1473

AQSQID: 370630099

Site Name: Burdens Creek

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

Updated: May 25, 2022, 6:37 a.m.

Location: Durham (Triangle Expy), NC

Reporting: True, Located: True

Current AQI: 14.0

Durham (Triangle Expy) NC, US: 35.889402, -78.8747

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 5.0 μg/m3 (5) 1.6 μg/m3 (7) 14.0
 
May 25, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 7.0 μg/m3 (7) 2.3 μg/m3 (10) 13.0
 
May 25, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 8.0 μg/m3 (8) 2.0 μg/m3 (9) 12.0
 
May 25, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 6.0 μg/m3 (6) 1.9 μg/m3 (8) 11.0
 
May 25, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 13.0
 
May 25, 2022, midnight N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (10) 14.0
 
May 24, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 6.0 μg/m3 (6) 2.8 μg/m3 (12) 17.0
 
May 24, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 7.0 μg/m3 (7) 3.1 μg/m3 (13) 18.0
 
May 24, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 10.0 μg/m3 (10) 5.6 μg/m3 (24) 24.0
 
May 24, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 7.0 μg/m3 (7) 4.6 μg/m3 (20) 20.0
 
May 24, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 10.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
May 24, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 9.0 μg/m3 (9) 4.6 μg/m3 (20) 20.0
 
May 24, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 14.0 μg/m3 (13) 7.2 μg/m3 (31) 31.0
 
May 24, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 21.0 μg/m3 (20) 9.8 μg/m3 (41) 41.0
 
May 24, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 22.0 μg/m3 (21) 9.9 μg/m3 (42) 42.0
 
May 24, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 26.0 μg/m3 (25) 10.3 μg/m3 (43) 43.0
 
May 24, 2022, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 25.0 μg/m3 (24) 10.4 μg/m3 (44) 44.0
 
May 24, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) 10.4 μg/m3 (44) 44.0
 
May 24, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 22.0 μg/m3 (21) 9.8 μg/m3 (41) 41.0
 
May 24, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 20.0 μg/m3 (19) 8.8 μg/m3 (37) 37.0
 
May 24, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 13.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 14.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 14.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 9.0 μg/m3 (9) 2.8 μg/m3 (12) 13.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 9.0 μg/m3 (9) 2.8 μg/m3 (12) 13.0
 
May 24, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 9.0 μg/m3 (9) 3.1 μg/m3 (13) 18.0
 
May 24, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 9.0 μg/m3 (9) 3.1 μg/m3 (13) 18.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 15.0 μg/m3 (14) 4.9 μg/m3 (21) 21.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 15.0 μg/m3 (14) 4.9 μg/m3 (21) 21.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 13.0 μg/m3 (13) 5.1 μg/m3 (22) 22.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 13.0 μg/m3 (13) 5.1 μg/m3 (22) 22.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 14.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 14.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 15.0 μg/m3 (14) 5.6 μg/m3 (24) 24.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 15.0 μg/m3 (14) 5.6 μg/m3 (24) 24.0
 
May 23, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 35.0 μg/m3 (33) 6.3 μg/m3 (27) 33.0
 
May 23, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 12.7 μg/m3 (53) 53.0
 
May 23, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.0 μg/m3 (20) 12.1 μg/m3 (51) 51.0
 
May 23, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 19.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
May 23, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 19.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
May 23, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 17.0 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 19.0 μg/m3 (18) 9.7 μg/m3 (41) 41.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 19.0 μg/m3 (18) 9.7 μg/m3 (41) 41.0
 
May 23, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 19.0 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
May 23, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 28.0 μg/m3 (26) 11.4 μg/m3 (48) 48.0
 
May 23, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 30.0 μg/m3 (28) 11.9 μg/m3 (50) 50.0
 
May 23, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 27.0 μg/m3 (25) 11.1 μg/m3 (47) 47.0
 
May 23, 2022, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 26.0 μg/m3 (25) 11.2 μg/m3 (47) 47.0
 
May 22, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 27.0 μg/m3 (25) 11.6 μg/m3 (49) 49.0
 
May 22, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 35.0 μg/m3 (33) 13.4 μg/m3 (54) 54.0
 
May 22, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 31.0 μg/m3 (29) 13.4 μg/m3 (54) 54.0
 
May 22, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 30.0 μg/m3 (28) 12.9 μg/m3 (53) 53.0
 
May 22, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 31.0 μg/m3 (29) 13.7 μg/m3 (55) 55.0
 
May 22, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 23.0 μg/m3 (22) 11.2 μg/m3 (47) 47.0
 
May 22, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 20.0 μg/m3 (19) 11.1 μg/m3 (47) 47.0
 
May 22, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 18.0 μg/m3 (17) 10.9 μg/m3 (46) 46.0
 
May 22, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 18.0 μg/m3 (17) 10.2 μg/m3 (43) 43.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 18.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 18.0 μg/m3 (17) 10.3 μg/m3 (43) 43.0
 
May 22, 2022, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 19.0 μg/m3 (18) 10.2 μg/m3 (43) 43.0
 
May 22, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 19.0 μg/m3 (18) 9.7 μg/m3 (41) 41.0
 
May 22, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.0 μg/m3 (18) 9.9 μg/m3 (42) 42.0
 
May 22, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.0 μg/m3 (18) 9.9 μg/m3 (42) 42.0
 
May 22, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.0 μg/m3 (18) 10.1 μg/m3 (43) 43.0
 
May 22, 2022, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 19.0 μg/m3 (18) 9.7 μg/m3 (41) 41.0
 
May 22, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 19.0 μg/m3 (18) 8.4 μg/m3 (36) 36.0
 
May 22, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 21.0 μg/m3 (20) 8.6 μg/m3 (36) 36.0
 
May 22, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 19.0 μg/m3 (18) 8.3 μg/m3 (35) 35.0
 
May 22, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 17.0 μg/m3 (16) 8.0 μg/m3 (34) 34.0
 
May 22, 2022, midnight N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 20.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
May 21, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 31.0 μg/m3 (29) 20.3 μg/m3 (69) 69.0
 
May 21, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 39.0 μg/m3 (37) 25.4 μg/m3 (79) 79.0
 
May 21, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 32.0 μg/m3 (30) 12.4 μg/m3 (52) 52.0
 
May 21, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 18.0 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
May 21, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 17.0 μg/m3 (16) 11.9 μg/m3 (50) 50.0
 
May 21, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 19.0 μg/m3 (18) 12.3 μg/m3 (52) 52.0
 
May 21, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 19.0 μg/m3 (18) 12.1 μg/m3 (51) 51.0
 
May 21, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 18.0 μg/m3 (17) 11.7 μg/m3 (49) 49.0
 
May 21, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 18.0 μg/m3 (17) 11.7 μg/m3 (49) 49.0
 
May 21, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 17.0 μg/m3 (16) 11.4 μg/m3 (48) 48.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
May 21, 2022, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
May 21, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 16.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
May 21, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 17.0 μg/m3 (16) 12.3 μg/m3 (52) 52.0
 
May 21, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 17.0 μg/m3 (16) 13.0 μg/m3 (53) 53.0
 
May 21, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 21.0 μg/m3 (20) 13.9 μg/m3 (55) 55.0
 
May 21, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 20.0 μg/m3 (19) 13.3 μg/m3 (54) 54.0
 
May 21, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 20.0 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
May 21, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 22.0 μg/m3 (21) 13.8 μg/m3 (55) 55.0
 
May 21, 2022, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.0 μg/m3 (20) 13.9 μg/m3 (55) 55.0
 
May 20, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 21.0 μg/m3 (20) 13.5 μg/m3 (54) 54.0
 
May 20, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 22.0 μg/m3 (21) 13.7 μg/m3 (55) 55.0
 
May 20, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.0 μg/m3 (26) 16.8 μg/m3 (61) 61.0
 
May 20, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 32.0 μg/m3 (30) 17.4 μg/m3 (63) 63.0
 
May 20, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 27.0 μg/m3 (25) 17.0 μg/m3 (62) 62.0
 
May 20, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 27.0 μg/m3 (25) 16.8 μg/m3 (61) 61.0
 
May 20, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 26.0 μg/m3 (25) 18.0 μg/m3 (64) 64.0
 
May 20, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 29.0 μg/m3 (27) 20.4 μg/m3 (69) 69.0
 
May 20, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 31.0 μg/m3 (29) 22.7 μg/m3 (74) 74.0
 
May 20, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 35.0 μg/m3 (33) 24.7 μg/m3 (78) 78.0
 
May 20, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 25.0 μg/m3 (24) 17.5 μg/m3 (63) 63.0
 
May 20, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 12.6 μg/m3 (53) 53.0
 
May 20, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
May 20, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 21.0 μg/m3 (20) 11.9 μg/m3 (50) 50.0
 
May 20, 2022, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 22.0 μg/m3 (21) 11.2 μg/m3 (47) 47.0
 
May 20, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 21.0 μg/m3 (20) 12.5 μg/m3 (52) 52.0
 
May 20, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 22.0 μg/m3 (21) 12.7 μg/m3 (53) 53.0
 
May 20, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 23.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
May 20, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 26.0 μg/m3 (25) 17.4 μg/m3 (63) 63.0
 
May 20, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 28.0 μg/m3 (26) 19.9 μg/m3 (68) 68.0
 
May 20, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 25.0 μg/m3 (24) 18.3 μg/m3 (65) 65.0
 
May 20, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 25.0 μg/m3 (24) 18.3 μg/m3 (65) 65.0
 
May 20, 2022, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 27.0 μg/m3 (25) 17.3 μg/m3 (62) 62.0
 
May 20, 2022, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 27.0 μg/m3 (25) 17.3 μg/m3 (62) 62.0
 
May 19, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 26.0 μg/m3 (25) 16.6 μg/m3 (61) 61.0
 
May 19, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 29.0 μg/m3 (27) 17.1 μg/m3 (62) 62.0
 
May 19, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 35.0 μg/m3 (33) 17.1 μg/m3 (62) 62.0
 
May 19, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 30.0 μg/m3 (28) 16.3 μg/m3 (60) 60.0
 
May 19, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 30.0 μg/m3 (28) 16.0 μg/m3 (60) 60.0
 
May 19, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 30.0 μg/m3 (28) 16.0 μg/m3 (60) 60.0
 
May 19, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 25.0 μg/m3 (24) 14.8 μg/m3 (57) 57.0
 
May 19, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 24.0 μg/m3 (23) 13.5 μg/m3 (54) 54.0
 
May 19, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 21.0 μg/m3 (20) 11.2 μg/m3 (47) 47.0
 
May 19, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 19.0 μg/m3 (18) 10.9 μg/m3 (46) 46.0
 
May 19, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 22.0 μg/m3 (21) 11.3 μg/m3 (48) 48.0
 
May 19, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 23.0 μg/m3 (22) 11.9 μg/m3 (50) 50.0
 
May 19, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 25.0 μg/m3 (24) 12.1 μg/m3 (51) 51.0
 
May 19, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 28.0 μg/m3 (26) 15.7 μg/m3 (59) 59.0
 
May 18, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 31.0 μg/m3 (29) 14.6 μg/m3 (57) 57.0
 
May 18, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 23.0 μg/m3 (22) 10.0 μg/m3 (42) 43.0
 
May 18, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 23.0 μg/m3 (22) 8.7 μg/m3 (37) 46.0
 
May 18, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 23.0 μg/m3 (22) 8.0 μg/m3 (34) 44.0
 
May 18, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 21.0 μg/m3 (20) 7.4 μg/m3 (31) 48.0
 
May 18, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 23.0 μg/m3 (22) 8.8 μg/m3 (37) 48.0
 
May 18, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 28.0 μg/m3 (26) 8.8 μg/m3 (37) 45.0
 
May 18, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 28.0 μg/m3 (26) 8.8 μg/m3 (37) 45.0
 
May 18, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 24.0 μg/m3 (23) 8.3 μg/m3 (35) 38.0
 
May 18, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 24.0 μg/m3 (23) 8.3 μg/m3 (35) 38.0
 
May 18, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.0 μg/m3 (20) 8.2 μg/m3 (35) 35.0
 
May 18, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 21.0 μg/m3 (20) 8.2 μg/m3 (35) 35.0
 
May 18, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 23.0 μg/m3 (22) 8.8 μg/m3 (37) 37.0
 
May 18, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 23.0 μg/m3 (22) 8.8 μg/m3 (37) 37.0
 
May 18, 2022, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 24.0 μg/m3 (23) 9.9 μg/m3 (42) 42.0
 
May 18, 2022, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 24.0 μg/m3 (23) 9.9 μg/m3 (42) 42.0
 
May 18, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 22.0 μg/m3 (21) 12.3 μg/m3 (52) 52.0
 
May 18, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 18.0 μg/m3 (17) 12.4 μg/m3 (52) 52.0
 
May 18, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 17.0 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
May 18, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 16.0 μg/m3 (15) 8.2 μg/m3 (35) 35.0
 
May 18, 2022, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 15.0 μg/m3 (14) 7.2 μg/m3 (31) 38.0
 
May 17, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 46.0
 
May 17, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 16.0 μg/m3 (15) 6.8 μg/m3 (29) 50.0
 
May 17, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 17.0 μg/m3 (16) 7.6 μg/m3 (32) 50.0
 
May 17, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 17.0 μg/m3 (16) 7.6 μg/m3 (32) 50.0
 
May 17, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 17.0 μg/m3 (16) 7.6 μg/m3 (32) 51.0
 
May 17, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 17.0 μg/m3 (16) 6.7 μg/m3 (28) 47.0
 
May 17, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 17.0 μg/m3 (16) 6.7 μg/m3 (28) 47.0
 
May 17, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.0 μg/m3 (16) 6.4 μg/m3 (27) 42.0
 
May 17, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.0 μg/m3 (16) 6.4 μg/m3 (27) 42.0
 
May 17, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 18.0 μg/m3 (17) 5.8 μg/m3 (25) 36.0
 
May 17, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 18.0 μg/m3 (17) 5.8 μg/m3 (25) 36.0
 
May 17, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 14.0 μg/m3 (13) 5.4 μg/m3 (23) 41.0
 
May 17, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 14.0 μg/m3 (13) 5.4 μg/m3 (23) 41.0
 
May 17, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.0 μg/m3 (14) 5.8 μg/m3 (25) 36.0
 
May 17, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 15.0 μg/m3 (14) 5.8 μg/m3 (25) 36.0
 
May 17, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 17.0 μg/m3 (16) 6.5 μg/m3 (28) 28.0
 
May 17, 2022, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 14.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0
 
May 17, 2022, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 14.0 μg/m3 (13) 7.7 μg/m3 (33) 33.0