ID: 206

AQSQID: 060750005

Site Name: San Francisco

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

Updated: Sept. 17, 2021, 5:54 p.m.

Location: San Francisco (Potrero Hill), CA

Reporting: True, Located: True

Current AQI: 38.0

San Francisco (Potrero Hill) CA, US: 37.7658, -122.3978

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 10, 2021, 4 p.m. 10.1 ppb (10) 3.1 ppb (3) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.28 ppb (4) N/A 3.0 μg/m3 (13) 20.0
 
Sept. 10, 2021, 3 p.m. 9.3 ppb (9) 2.6 ppb (3) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.3 ppb (4) N/A 3.0 μg/m3 (13) 20.0
 
Sept. 10, 2021, 2 p.m. 8.3 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.29 ppb (4) N/A 3.0 μg/m3 (13) 19.0
 
Sept. 10, 2021, 1 p.m. 5.2 ppb (5) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) 0.26 ppb (4) N/A 0.0 μg/m3 (0) 21.0
 
Sept. 10, 2021, noon 4.6 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 0.0 μg/m3 (0) 20.0
 
Sept. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 10, 2021, 10 a.m. 4.6 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) 0.22 ppb (3) N/A 2.0 μg/m3 (9) 20.0
 
Sept. 10, 2021, 9 a.m. 2.8 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.21 ppb (3) N/A 1.0 μg/m3 (5) 21.0
 
Sept. 10, 2021, 8 a.m. 2.5 ppb (3) 1.3 ppb (2) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.22 ppb (3) N/A 1.0 μg/m3 (5) 23.0
 
Sept. 10, 2021, 7 a.m. 2.6 ppb (3) 1.3 ppb (2) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 23.0
 
Sept. 10, 2021, 6 a.m. 2.5 ppb (3) 1.2 ppb (2) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 10, 2021, 5 a.m. 3.4 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 1.0 μg/m3 (5) 20.0
 
Sept. 10, 2021, 4 a.m. 3.4 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 2.0 μg/m3 (9) 20.0
 
Sept. 10, 2021, 3 a.m. 3.3 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 10, 2021, 2 a.m. 4.0 ppb (4) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 10, 2021, 1 a.m. 4.6 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 10, 2021, midnight 6.9 ppb (7) 2.8 ppb (3) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) 0.27 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 9, 2021, 11 p.m. 4.8 ppb (5) 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 9, 2021, 10 p.m. 4.8 ppb (5) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 9, 2021, 9 p.m. 5.9 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 8 p.m. 4.2 ppb (4) 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.27 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 9, 2021, 7 p.m. 4.9 ppb (5) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 9, 2021, 6 p.m. 6.0 ppb (6) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 9, 2021, 5 p.m. 6.1 ppb (6) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.3 ppb (4) N/A N/A 26.0
 
Sept. 9, 2021, 4 p.m. 6.0 ppb (6) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2021, 3 p.m. 10.3 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 2 p.m. 6.8 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 9, 2021, 1 p.m. 5.9 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.3 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 9, 2021, noon 5.4 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.3 ppb (4) N/A 4.0 μg/m3 (17) 27.0
 
Sept. 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 9, 2021, 10 a.m. 4.1 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 30.0
 
Sept. 9, 2021, 9 a.m. 5.5 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 8 a.m. 3.2 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 7 a.m. 3.6 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 6 a.m. 5.0 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.3 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 9, 2021, 5 a.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 9, 2021, 4 a.m. 7.1 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (25) 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 9, 2021, 3 a.m. 7.7 ppb (8) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 9, 2021, 2 a.m. 5.7 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2021, 1 a.m. 5.8 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.31 ppb (4) N/A 3.0 μg/m3 (13) 27.0
 
Sept. 9, 2021, midnight 5.5 ppb (6) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.3 ppb (4) N/A 3.0 μg/m3 (13) 27.0
 
Sept. 8, 2021, 11 p.m. 6.0 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.31 ppb (4) N/A 4.0 μg/m3 (17) 28.0
 
Sept. 8, 2021, 10 p.m. 7.9 ppb (8) 3.3 ppb (4) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 8, 2021, 9 p.m. 10.1 ppb (10) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.36 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 8, 2021, 8 p.m. 9.1 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 8, 2021, 7 p.m. 7.4 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.33 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 8, 2021, 6 p.m. 6.6 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 8, 2021, 5 p.m. 6.8 ppb (7) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) 0.34 ppb (4) N/A 3.0 μg/m3 (13) 25.0
 
Sept. 8, 2021, 4 p.m. 8.5 ppb (9) 3.5 ppb (4) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 8, 2021, 3 p.m. 10.5 ppb (10) 3.4 ppb (4) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) 0.38 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 8, 2021, 2 p.m. 10.1 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) 0.34 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 8, 2021, 1 p.m. 10.4 ppb (10) 1.4 ppb (2) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 8, 2021, noon 8.9 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.31 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 8, 2021, 10 a.m. 4.3 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 8, 2021, 9 a.m. 8.2 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) 0.33 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 8, 2021, 8 a.m. 8.4 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 8, 2021, 7 a.m. 8.7 ppb (9) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 8, 2021, 6 a.m. 5.4 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 8, 2021, 5 a.m. 3.7 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 8, 2021, 4 a.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 8, 2021, 3 a.m. 9.2 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) 0.34 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 8, 2021, 2 a.m. 7.0 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 8, 2021, 1 a.m. 6.5 ppb (7) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.34 ppb (4) N/A 3.0 μg/m3 (13) 25.0
 
Sept. 8, 2021, midnight 6.1 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.34 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 7, 2021, 11 p.m. 6.2 ppb (6) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 7, 2021, 10 p.m. 6.3 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.36 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 7, 2021, 9 p.m. 9.1 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.36 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 7, 2021, 8 p.m. 7.1 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.35 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 7, 2021, 7 p.m. 6.6 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.33 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 7, 2021, 6 p.m. 8.0 ppb (8) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 7, 2021, 5 p.m. 9.5 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 7, 2021, 4 p.m. 15.9 ppb (15) 6.8 ppb (7) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 7, 2021, 3 p.m. 19.7 ppb (19) 7.8 ppb (8) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) 0.47 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 7, 2021, 2 p.m. 24.7 ppb (24) 7.5 ppb (8) N/A 17.0 ppb (17) N/A N/A 8.0 ppb (8) 0.67 ppb (8) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 7, 2021, 1 p.m. 17.8 ppb (17) 1.9 ppb (2) N/A 16.0 ppb (16) N/A N/A 9.0 ppb (9) 0.48 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 7, 2021, noon 12.7 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.34 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 7, 2021, 10 a.m. 6.5 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) 0.29 ppb (4) N/A 3.0 μg/m3 (13) 20.0
 
Sept. 7, 2021, 9 a.m. 6.2 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.28 ppb (4) N/A 4.0 μg/m3 (17) 21.0
 
Sept. 7, 2021, 8 a.m. 6.0 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 7, 2021, 7 a.m. 7.0 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) 0.31 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 7, 2021, 6 a.m. 9.8 ppb (10) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) 0.31 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 7, 2021, 5 a.m. 6.7 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) 0.33 ppb (4) N/A 3.0 μg/m3 (13) 18.0
 
Sept. 7, 2021, 4 a.m. 6.5 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 7, 2021, 3 a.m. 6.1 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.35 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 7, 2021, 2 a.m. 6.5 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 7, 2021, 1 a.m. 6.4 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.41 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 7, 2021, midnight 6.6 ppb (7) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.37 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 6, 2021, 11 p.m. 6.3 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 6, 2021, 10 p.m. 7.8 ppb (8) 3.2 ppb (4) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 9 p.m. 6.6 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.36 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 6, 2021, 8 p.m. 8.3 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.42 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 6, 2021, 7 p.m. 17.4 ppb (17) 6.8 ppb (7) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.48 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 6 p.m. 10.6 ppb (10) 4.5 ppb (5) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.38 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 6, 2021, 5 p.m. 10.7 ppb (11) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (16) 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 6, 2021, 4 p.m. 14.5 ppb (14) 6.8 ppb (7) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) 0.42 ppb (5) N/A 3.0 μg/m3 (13) 14.0
 
Sept. 6, 2021, 3 p.m. 16.4 ppb (16) 8.0 ppb (8) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) 0.38 ppb (5) N/A 0.0 μg/m3 (0) 16.0
 
Sept. 6, 2021, 2 p.m. 13.7 ppb (13) 4.5 ppb (5) N/A 9.0 ppb (9) N/A N/A 9.0 ppb (9) 0.35 ppb (4) N/A -2.0 μg/m3 (0) 13.0
 
Sept. 6, 2021, 1 p.m. 9.3 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) 0.3 ppb (4) N/A 1.0 μg/m3 (5) 13.0
 
Sept. 6, 2021, noon 6.6 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 6, 2021, 10 a.m. 5.6 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) 0.36 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 6, 2021, 9 a.m. 5.7 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (17) 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 6, 2021, 8 a.m. 5.6 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 7 a.m. 8.4 ppb (8) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A 14.0 ppb (13) 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 6, 2021, 6 a.m. 9.0 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) 0.4 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 6, 2021, 5 a.m. 7.7 ppb (8) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) 0.36 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 6, 2021, 4 a.m. 6.8 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 3 a.m. 6.1 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 6, 2021, 2 a.m. 5.3 ppb (5) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) 0.38 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 6, 2021, 1 a.m. 6.9 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.39 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 6, 2021, midnight 6.2 ppb (6) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.44 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 11 p.m. 6.2 ppb (6) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.52 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 5, 2021, 10 p.m. 7.7 ppb (8) 2.7 ppb (3) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.52 ppb (6) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 5, 2021, 9 p.m. 8.4 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) 0.51 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 5, 2021, 8 p.m. 7.0 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.46 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 7 p.m. 8.6 ppb (9) 2.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (38) 0.52 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Sept. 5, 2021, 6 p.m. 23.1 ppb (22) 8.1 ppb (8) N/A 15.0 ppb (15) N/A N/A 27.0 ppb (25) 0.56 ppb (7) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 5, 2021, 5 p.m. 27.6 ppb (27) 10.6 ppb (10) N/A 17.0 ppb (17) N/A N/A 22.0 ppb (21) 0.54 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Sept. 5, 2021, 4 p.m. 16.4 ppb (16) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A 25.0 ppb (24) 0.52 ppb (6) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 5, 2021, 3 p.m. 11.5 ppb (11) 3.1 ppb (3) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.46 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 5, 2021, 2 p.m. 12.5 ppb (12) 2.4 ppb (3) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) 0.47 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 5, 2021, 1 p.m. 8.5 ppb (9) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.47 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, noon 6.3 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.44 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 11 a.m. 4.9 ppb (5) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.46 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 9 a.m. 5.5 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 5, 2021, 8 a.m. 5.7 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 5, 2021, 7 a.m. 4.0 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.38 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 6 a.m. 6.1 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.42 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 5, 2021, 5 a.m. 6.8 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.43 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 5, 2021, 4 a.m. 5.5 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.41 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 5, 2021, 3 a.m. 7.0 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.44 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 5, 2021, 2 a.m. 6.4 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.43 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 5, 2021, 1 a.m. 6.6 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.43 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, midnight 7.2 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.45 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 4, 2021, 11 p.m. 6.4 ppb (7) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) 0.47 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 4, 2021, 10 p.m. 6.8 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (47) 0.45 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 9 p.m. 6.3 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) 0.45 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 4, 2021, 8 p.m. 6.5 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (46) 0.43 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 7 p.m. 7.5 ppb (8) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.42 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 4, 2021, 6 p.m. 9.1 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) 0.45 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 4, 2021, 5 p.m. 7.1 ppb (7) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.42 ppb (5) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 4, 2021, 4 p.m. 7.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.41 ppb (5) N/A 27.0 μg/m3 (83) 83.0
 
Sept. 4, 2021, 3 p.m. 8.8 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) 0.41 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 2 p.m. 5.9 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.4 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 4, 2021, 1 p.m. 5.8 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.37 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 4, 2021, noon 5.6 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.38 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 10 a.m. 8.0 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.39 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 4, 2021, 9 a.m. 7.7 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.38 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 4, 2021, 8 a.m. 7.0 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.36 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 4, 2021, 7 a.m. 5.3 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.38 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 4, 2021, 6 a.m. 6.5 ppb (7) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 4, 2021, 5 a.m. 6.2 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 4, 2021, 4 a.m. 4.1 ppb (4) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.38 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 4, 2021, 3 a.m. 4.2 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.37 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 4, 2021, 2 a.m. 4.9 ppb (5) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 1 a.m. 6.4 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.41 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 4, 2021, midnight 6.1 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.4 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 3, 2021, 11 p.m. 5.7 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.4 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 3, 2021, 10 p.m. 6.9 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.39 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 3, 2021, 9 p.m. 8.7 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) 0.41 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 3, 2021, 8 p.m. 8.5 ppb (9) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.42 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 3, 2021, 7 p.m. 8.4 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.43 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 3, 2021, 6 p.m. 9.3 ppb (9) 3.2 ppb (4) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) 0.44 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 3, 2021, 5 p.m. 12.0 ppb (12) 4.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 29.0 ppb (27) 0.47 ppb (6) N/A 23.0 μg/m3 (74) 74.0