AQSQID: 370630015

Site Name: Durham Armory

Location: Durham, NC

Reporting: True, Located: True

Current AQI: 42.0

Durham NC, US: 35.9919, -78.8964

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 14.0 μg/m3 (13) 12.0 μg/m3 (50) 50.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) N/A 21.0 μg/m3 (19) 15.0 μg/m3 (56) 56.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A 23.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 30.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 37.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 23.0 μg/m3 (21) 5.0 μg/m3 (21) 40.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) N/A 23.0 μg/m3 (21) 8.0 μg/m3 (33) 42.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 53.0 ppb (41) N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 41.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 39.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 40.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 39.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 16.0 μg/m3 (15) 2.0 μg/m3 (8) 38.0
 
May 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A 15.0 μg/m3 (14) 2.0 μg/m3 (8) 37.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 14.0 μg/m3 (13) 3.0 μg/m3 (12) 33.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 34.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 8.0 μg/m3 (7) 8.0 μg/m3 (33) 33.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 10.0 μg/m3 (9) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (29) 30.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 12.0 μg/m3 (11) 6.0 μg/m3 (25) 29.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 30.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A 17.0 μg/m3 (15) 2.0 μg/m3 (8) 37.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) N/A 7.0 μg/m3 (6) -1.0 μg/m3 (0) 42.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 10.0 μg/m3 (9) 1.0 μg/m3 (4) 38.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 38.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) N/A 13.0 μg/m3 (12) 4.0 μg/m3 (17) 42.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 55.0 ppb (42) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 42.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 53.0 ppb (41) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 41.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 49.0 ppb (38) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 38.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 35.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 9.0 μg/m3 (8) 3.0 μg/m3 (12) 33.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 33.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 11.0 μg/m3 (10) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 9.0 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) N/A 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) N/A 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) N/A 17.0 μg/m3 (15) 7.0 μg/m3 (29) 42.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) N/A 18.0 μg/m3 (16) 7.0 μg/m3 (29) 40.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A 16.0 μg/m3 (15) 6.0 μg/m3 (25) 31.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 27.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A 13.0 μg/m3 (12) 5.0 μg/m3 (21) 25.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 19.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 18.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (18) N/A 9.0 μg/m3 (8) 1.0 μg/m3 (4) 18.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 9.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A 23.0 μg/m3 (21) 16.0 μg/m3 (59) 59.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 18.0 μg/m3 (16) 16.0 μg/m3 (59) 59.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 53.0 ppb (41) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (29) 41.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 58.0 ppb (45) N/A 13.0 μg/m3 (12) 7.0 μg/m3 (29) 45.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 45.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 55.0 ppb (42) N/A 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 55.0 ppb (42) N/A 18.0 μg/m3 (16) 9.0 μg/m3 (38) 42.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 29.0 μg/m3 (26) 9.0 μg/m3 (38) 39.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A 22.0 μg/m3 (20) 15.0 μg/m3 (56) 56.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) N/A 20.0 μg/m3 (18) 20.0 μg/m3 (67) 67.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A 22.0 μg/m3 (20) 19.0 μg/m3 (65) 65.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A 14.0 μg/m3 (13) 16.0 μg/m3 (59) 59.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A 13.0 μg/m3 (12) 15.0 μg/m3 (56) 56.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 16.0 μg/m3 (59) 59.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A 21.0 μg/m3 (19) 18.0 μg/m3 (63) 63.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 19.0 μg/m3 (17) 20.0 μg/m3 (67) 67.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) N/A 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 5.0 ppb (4) N/A 29.0 μg/m3 (26) 23.0 μg/m3 (73) 73.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) N/A 38.0 μg/m3 (35) 21.0 μg/m3 (69) 69.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (45) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 45.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) N/A 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 60.0 ppb (46) N/A 18.0 μg/m3 (16) 12.0 μg/m3 (50) 50.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 45.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) N/A 20.0 μg/m3 (18) 10.0 μg/m3 (42) 45.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 45.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 59.0 ppb (45) N/A 21.0 μg/m3 (19) 9.0 μg/m3 (38) 45.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 58.0 ppb (45) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 45.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) N/A 19.0 μg/m3 (17) 8.0 μg/m3 (33) 40.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 37.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 32.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A 45.0 μg/m3 (41) 14.0 μg/m3 (54) 54.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 8.0 ppb (6) N/A 11.0 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) N/A 10.0 μg/m3 (9) 8.0 μg/m3 (33) 33.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) N/A 19.0 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A 17.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 11.0 ppb (8) N/A 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 12.0 ppb (9) N/A 21.0 μg/m3 (19) 15.0 μg/m3 (56) 56.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (10) N/A 16.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A 18.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) N/A 18.0 μg/m3 (16) 14.0 μg/m3 (54) 54.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 65.0 ppb (50) N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 50.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 64.0 ppb (49) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 49.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (48) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 48.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 59.0 ppb (45) N/A 17.0 μg/m3 (15) 10.0 μg/m3 (42) 45.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 57.0 ppb (44) N/A 17.0 μg/m3 (15) 9.0 μg/m3 (38) 44.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 55.0 ppb (42) N/A N/A N/A 42.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A N/A N/A 39.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A 22.0 μg/m3 (20) N/A 32.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) N/A 19.0 μg/m3 (17) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 11.0 ppb (8) N/A 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) N/A 11.0 μg/m3 (10) 13.0 μg/m3 (52) 52.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A 12.0 μg/m3 (11) 14.0 μg/m3 (54) 54.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) N/A 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 12.0 ppb (9) N/A 13.0 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 14.0 ppb (11) N/A 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A 11.0 μg/m3 (10) 5.0 μg/m3 (21) 35.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 21.0 μg/m3 (19) 4.0 μg/m3 (17) 38.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 65.0 ppb (50) N/A 6.0 μg/m3 (5) 6.0 μg/m3 (25) 50.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 64.0 ppb (49) N/A N/A N/A 49.0
 
May 16, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 64.0 ppb (49) N/A N/A N/A 49.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 60.0 ppb (46) N/A N/A N/A 46.0
 
May 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 57.0 ppb (44) N/A N/A N/A 44.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 55.0 ppb (42) N/A 8.0 μg/m3 (7) 2.0 μg/m3 (8) 42.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 9.0 μg/m3 (8) 2.0 μg/m3 (8) 40.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 14.0 μg/m3 (13) 6.0 μg/m3 (25) 38.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) N/A 10.0 μg/m3 (9) 9.0 μg/m3 (38) 38.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) N/A 8.0 μg/m3 (7) 11.0 μg/m3 (46) 46.0
 
May 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) N/A 9.0 μg/m3 (8) 8.0 μg/m3 (33) 33.0
 
May 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) N/A 8.0 μg/m3 (7) 8.0 μg/m3 (33) 33.0