ID: 7935

AQSQID: 840450190021

Site Name: Spa-Irving St.

Added: June 16, 2020, 5:40 a.m.

Updated: Sept. 25, 2020, 8:39 a.m.

Location: N Charleston (Irving Ave), SC

Reporting: True, Located: True

Current AQI: 24.0

N Charleston (Irving Ave) SC, US: 32.836602, -79.956983

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 25, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 25, 2020, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 25, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 25, 2020, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 25, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 25, 2020, midnight N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 24, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 24, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 24, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 24, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 24, 2020, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 24, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 13.5 μg/m3 (53) 53.0
 
Sept. 24, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
Sept. 24, 2020, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 24, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 24, 2020, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
Sept. 24, 2020, noon N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 24, 2020, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
Sept. 24, 2020, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 24, 2020, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 24, 2020, 7 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A N/A 9.2 μg/m3 (38) 38.0
 
Sept. 24, 2020, 6 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A N/A 9.7 μg/m3 (40) 40.0
 
Sept. 24, 2020, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 24, 2020, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, 2 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 16.9 μg/m3 (60) 60.0
 
Sept. 24, 2020, 1 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 12.6 μg/m3 (51) 51.0
 
Sept. 24, 2020, midnight N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 23, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 23, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 23, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 23, 2020, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 10.1 μg/m3 (42) 42.0
 
Sept. 23, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A 9.2 μg/m3 (38) 38.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 23, 2020, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A 14.3 μg/m3 (55) 55.0
 
Sept. 23, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 23, 2020, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) 7.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A N/A 11.0
 
Sept. 23, 2020, noon N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A N/A N/A 16.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A N/A N/A 16.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A N/A N/A N/A 19.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A N/A N/A 21.0
 
Sept. 21, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 21, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 21, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 21, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 21, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 21, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 21, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 21, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 21, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 21, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 21, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 21, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 20, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 20, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 20, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 20, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 19, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 19, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 11.6 μg/m3 (48) 48.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 13.6 μg/m3 (53) 53.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 15.3 μg/m3 (57) 57.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 16.1 μg/m3 (59) 59.0
 
Sept. 19, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 16.1 μg/m3 (59) 59.0
 
Sept. 19, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 15.8 μg/m3 (58) 58.0
 
Sept. 19, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 15.8 μg/m3 (58) 58.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 14.2 μg/m3 (55) 55.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 12.4 μg/m3 (51) 51.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 11.5 μg/m3 (48) 48.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 11.8 μg/m3 (49) 49.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 11.8 μg/m3 (49) 49.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 9.8 μg/m3 (41) 41.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 18, 2020, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) N/A
Sept. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 18, 2020, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
Sept. 18, 2020, noon N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 18, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
Sept. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A N/A N/A
Sept. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 17, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 17, 2020, midnight N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 3.6 μg/m3 (15) 15.0
 
Sept. 16, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 16, 2020, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 16, 2020, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 16, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 16, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 16, 2020, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 9.1 μg/m3 (38) 38.0