ID: 1002

AQSQID: 450250001

Site Name: Chesterfield

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

Updated: Sept. 23, 2020, 3:41 p.m.

Location: Jefferson (S Carolina Hwy 145), SC

Reporting: True, Located: True

Current AQI: 32.0

Jefferson (S Carolina Hwy 145) SC, US: 34.615299, -80.198898

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 7.6 μg/m3 (32) 32.0
 
Sept. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.2 μg/m3 (30) 30.0
 
Sept. 23, 2020, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 6.6 μg/m3 (28) 28.0
 
Sept. 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.3 μg/m3 (22) 25.0
 
Sept. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
Sept. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.3 μg/m3 (22) 28.0
 
Sept. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.9 μg/m3 (20) 30.0
 
Sept. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.5 μg/m3 (19) 30.0
 
Sept. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.4 μg/m3 (18) 28.0
 
Sept. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
Sept. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.5 μg/m3 (19) 28.0
 
Sept. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.6 μg/m3 (19) 26.0
 
Sept. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.7 μg/m3 (20) 24.0
 
Sept. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 22, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 22, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 22, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
Sept. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.9 μg/m3 (20) 26.0
 
Sept. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Sept. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
Sept. 21, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Sept. 21, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Sept. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
Sept. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Sept. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
Sept. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
Sept. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
Sept. 21, 2020, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.1 μg/m3 (17) 18.0
 
Sept. 21, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 21, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 21, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 21, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 21, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
Sept. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Sept. 21, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
Sept. 21, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Sept. 21, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 4.2 μg/m3 (18) 21.0
 
Sept. 21, 2020, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.2 μg/m3 (18) 24.0
 
Sept. 20, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
Sept. 20, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 20, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.8 μg/m3 (16) 30.0
 
Sept. 20, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.9 μg/m3 (16) 29.0
 
Sept. 20, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Sept. 20, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.2 μg/m3 (18) 28.0
 
Sept. 20, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
Sept. 20, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.1 μg/m3 (17) 25.0
 
Sept. 20, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.9 μg/m3 (16) 24.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.5 μg/m3 (15) 21.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.5 μg/m3 (15) 19.0
 
Sept. 20, 2020, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.5 μg/m3 (15) 18.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 3.6 μg/m3 (15) 16.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.5 μg/m3 (15) 18.0
 
Sept. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 3.5 μg/m3 (15) 17.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 3.4 μg/m3 (14) 17.0
 
Sept. 20, 2020, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Sept. 19, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 3.4 μg/m3 (14) 20.0
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Sept. 19, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Sept. 19, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 19, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 19, 2020, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 13.5 μg/m3 (53) 53.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 17.4 μg/m3 (61) 61.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 17.3 μg/m3 (61) 61.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 15.5 μg/m3 (57) 57.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 14.5 μg/m3 (55) 55.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 12.7 μg/m3 (51) 51.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 19, 2020, midnight N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 5.1 μg/m3 (21) 23.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.1 μg/m3 (21) 22.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 2.8 μg/m3 (12) 19.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 1.1 μg/m3 (5) 15.0
 
Sept. 18, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 1.3 μg/m3 (5) 15.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 1.9 μg/m3 (8) 17.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 2.8 μg/m3 (12) 18.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 3.2 μg/m3 (13) 17.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 2.7 μg/m3 (11) 15.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 2.9 μg/m3 (12) 13.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 2.9 μg/m3 (12) 13.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 2.7 μg/m3 (11) 12.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 3.5 μg/m3 (15) 15.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 3.3 μg/m3 (14) 14.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 2.5 μg/m3 (10) 10.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 2.1 μg/m3 (9) 10.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 1.8 μg/m3 (8) 11.0
 
Sept. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.4 μg/m3 (6) 12.0
 
Sept. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.8 μg/m3 (8) 12.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 1.1 μg/m3 (5) 10.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 1.2 μg/m3 (5) 10.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.5 μg/m3 (6) 9.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.3 μg/m3 (5) 9.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.7 μg/m3 (7) 9.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 2.0 μg/m3 (8) 9.0
 
Sept. 17, 2020, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 2.2 μg/m3 (9) 9.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 2.1 μg/m3 (9) 9.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.7 μg/m3 (11) 11.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 3.6 μg/m3 (15) 15.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 6.9 μg/m3 (29) 29.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 8.4 μg/m3 (35) 35.0
 
Sept. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 9.6 μg/m3 (40) 40.0
 
Sept. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 5.2 μg/m3 (22) 22.0