ID: 207

AQSQID: 060771002

Site Name: Stockton - Hazelton Street

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

Updated: March 8, 2021, 8:32 a.m.

Location: Stockton (Fair Oaks), CA

Reporting: True, Located: True

Current AQI: 46.0

Stockton (Fair Oaks) CA, US: 37.95075, -121.26897

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 8, 2021, 6 a.m. 8.0 ppb (8) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 8, 2021, 5 a.m. 6.5 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 8, 2021, 4 a.m. 9.6 ppb (10) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) 0.37 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
March 8, 2021, 3 a.m. 8.0 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.37 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
March 8, 2021, 2 a.m. 9.4 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) 0.4 ppb (5) N/A N/A 28.0
 
March 8, 2021, 1 a.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.3 ppb (4) N/A 6.0 μg/m3 (25) 34.0
 
March 8, 2021, midnight 4.2 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.26 ppb (4) N/A 6.0 μg/m3 (25) 34.0
 
March 7, 2021, 11 p.m. 3.7 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 33.0
 
March 7, 2021, 10 p.m. 4.2 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.25 ppb (3) N/A 7.0 μg/m3 (30) 33.0
 
March 7, 2021, 9 p.m. 4.1 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.24 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 7, 2021, 8 p.m. 4.6 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 29.0
 
March 7, 2021, 7 p.m. 4.9 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.21 ppb (3) N/A 5.0 μg/m3 (21) 28.0
 
March 7, 2021, 6 p.m. 5.4 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 27.0
 
March 7, 2021, 5 p.m. 7.0 ppb (7) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 24.0
 
March 7, 2021, 4 p.m. 7.6 ppb (8) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.24 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 7, 2021, 3 p.m. 19.6 ppb (19) 6.3 ppb (6) N/A 13.0 ppb (13) N/A N/A 15.0 ppb (14) 0.4 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 7, 2021, 2 p.m. 23.5 ppb (23) 4.6 ppb (5) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (4) 0.52 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
March 7, 2021, 1 p.m. 15.7 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (14) N/A N/A 10.0 ppb (10) 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 7, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 7, 2021, 11 a.m. 20.7 ppb (20) 2.2 ppb (3) N/A 19.0 ppb (18) N/A N/A 7.0 ppb (7) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 7, 2021, 10 a.m. 23.4 ppb (23) 3.0 ppb (3) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (5) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
March 7, 2021, 9 a.m. 7.3 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
March 7, 2021, 8 a.m. 7.9 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
March 7, 2021, 7 a.m. 7.6 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.27 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 7, 2021, 6 a.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 7, 2021, 5 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 7, 2021, 4 a.m. 5.4 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.27 ppb (4) N/A 5.0 μg/m3 (21) 27.0
 
March 7, 2021, 3 a.m. 6.5 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.29 ppb (4) N/A 5.0 μg/m3 (21) 27.0
 
March 7, 2021, 2 a.m. 8.3 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.28 ppb (4) N/A 6.0 μg/m3 (25) 30.0
 
March 7, 2021, 1 a.m. 5.7 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 34.0
 
March 7, 2021, midnight 4.3 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 36.0
 
March 6, 2021, 11 p.m. 4.4 ppb (5) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 37.0
 
March 6, 2021, 10 p.m. 5.6 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 36.0
 
March 6, 2021, 9 p.m. 5.3 ppb (5) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.18 ppb (3) N/A 6.0 μg/m3 (25) 35.0
 
March 6, 2021, 8 p.m. 5.5 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 35.0
 
March 6, 2021, 7 p.m. 5.5 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 6 p.m. 6.6 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 5 p.m. 6.3 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.17 ppb (3) N/A 7.0 μg/m3 (30) 34.0
 
March 6, 2021, 4 p.m. 13.4 ppb (13) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) 0.2 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 6, 2021, 3 p.m. 31.9 ppb (31) 10.5 ppb (10) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.33 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 2 p.m. 11.6 ppb (11) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
March 6, 2021, 1 p.m. 7.9 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.17 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 6, 2021, 11 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A 6.0 μg/m3 (25) 31.0
 
March 6, 2021, 10 a.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 9 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) 0.1 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
March 6, 2021, 8 a.m. 4.8 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.13 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 6, 2021, 7 a.m. 12.5 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) 0.17 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
March 6, 2021, 6 a.m. 10.1 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 6, 2021, 5 a.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 6, 2021, 4 a.m. 10.1 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) 0.19 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 6, 2021, 3 a.m. 10.5 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
March 6, 2021, 2 a.m. 19.5 ppb (19) 1.3 ppb (2) N/A 18.0 ppb (17) N/A N/A 31.0 ppb (29) 0.35 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 6, 2021, 1 a.m. 7.6 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 45.0 ppb (42) 0.21 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 6, 2021, midnight 7.7 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 45.0 ppb (42) 0.2 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
March 5, 2021, 11 p.m. 8.3 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 46.0 ppb (43) 0.2 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 5, 2021, 10 p.m. 11.8 ppb (12) 2.7 ppb (3) N/A 9.0 ppb (9) N/A N/A 45.0 ppb (42) 0.21 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 5, 2021, 9 p.m. 8.7 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 45.0 ppb (42) 0.2 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 5, 2021, 8 p.m. 8.0 ppb (8) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.19 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 5, 2021, 7 p.m. 8.4 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.16 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
March 5, 2021, 6 p.m. 10.9 ppb (11) 3.1 ppb (3) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) 0.18 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 5, 2021, 5 p.m. 15.4 ppb (15) 5.2 ppb (5) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.23 ppb (3) N/A 22.0 μg/m3 (72) 72.0
 
March 5, 2021, 4 p.m. 34.8 ppb (33) 16.2 ppb (16) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (16) 0.34 ppb (4) N/A N/A 33.0
 
March 5, 2021, 3 p.m. 59.9 ppb (58) 28.1 ppb (27) N/A 31.0 ppb (30) N/A N/A 6.0 ppb (6) 0.44 ppb (5) N/A 26.0 μg/m3 (81) 81.0
 
March 5, 2021, 2 p.m. 42.5 ppb (41) 15.0 ppb (15) N/A 27.0 ppb (26) N/A N/A 3.0 ppb (3) 0.45 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
March 5, 2021, 1 p.m. 41.8 ppb (40) 13.6 ppb (13) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) 0.47 ppb (6) N/A 25.0 μg/m3 (79) 79.0
 
March 5, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
March 5, 2021, 11 a.m. 27.5 ppb (26) 4.9 ppb (5) N/A 23.0 ppb (22) N/A N/A 9.0 ppb (9) 0.34 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
March 5, 2021, 10 a.m. 23.7 ppb (23) 2.7 ppb (3) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) 0.29 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
March 5, 2021, 9 a.m. 14.8 ppb (14) 1.2 ppb (2) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) 0.25 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
March 5, 2021, 8 a.m. 14.7 ppb (14) 0.9 ppb (1) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 5, 2021, 7 a.m. 15.0 ppb (15) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) 0.28 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
March 5, 2021, 6 a.m. 17.1 ppb (17) 0.9 ppb (1) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.3 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
March 5, 2021, 5 a.m. 13.9 ppb (14) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.25 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
March 5, 2021, 4 a.m. 10.9 ppb (11) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) 0.23 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 5, 2021, 3 a.m. 23.7 ppb (23) 1.9 ppb (2) N/A 22.0 ppb (21) N/A N/A 25.0 ppb (24) 0.38 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
March 5, 2021, 2 a.m. 28.7 ppb (28) 2.1 ppb (2) N/A 27.0 ppb (26) N/A N/A 24.0 ppb (23) 0.39 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 5, 2021, 1 a.m. 13.8 ppb (14) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 39.0 ppb (37) 0.25 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 5, 2021, midnight 10.4 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 45.0 ppb (42) 0.23 ppb (3) N/A 21.0 μg/m3 (70) 70.0
 
March 4, 2021, 11 p.m. 9.2 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A 46.0 ppb (43) 0.2 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 4, 2021, 10 p.m. 10.3 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 44.0 ppb (41) 0.2 ppb (3) N/A 21.0 μg/m3 (70) 70.0
 
March 4, 2021, 9 p.m. 8.8 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.17 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 4, 2021, 8 p.m. 7.8 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) 0.17 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 4, 2021, 7 p.m. 7.1 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.15 ppb (2) N/A 18.0 μg/m3 (64) 64.0
 
March 4, 2021, 6 p.m. 13.2 ppb (13) 5.1 ppb (5) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 5 p.m. 17.0 ppb (17) 5.3 ppb (5) N/A 12.0 ppb (12) N/A N/A 28.0 ppb (26) 0.16 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 4 p.m. 27.3 ppb (26) 9.9 ppb (10) N/A 17.0 ppb (17) N/A N/A 18.0 ppb (17) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 4, 2021, 3 p.m. 59.1 ppb (57) 33.8 ppb (32) N/A 25.0 ppb (24) N/A N/A 5.0 ppb (5) 0.33 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
March 4, 2021, 2 p.m. 45.0 ppb (43) 19.4 ppb (19) N/A 26.0 ppb (25) N/A N/A 2.0 ppb (2) 0.38 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
March 4, 2021, 1 p.m. 35.8 ppb (34) 8.0 ppb (8) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) 0.42 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
March 4, 2021, noon 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
 
March 4, 2021, 11 a.m. 23.9 ppb (23) 1.7 ppb (2) N/A 22.0 ppb (21) N/A N/A 7.0 ppb (7) 0.26 ppb (4) N/A 23.0 μg/m3 (74) 74.0
 
March 4, 2021, 10 a.m. 25.7 ppb (25) 4.0 ppb (4) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.3 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
March 4, 2021, 9 a.m. 13.0 ppb (13) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) 0.26 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 4, 2021, 8 a.m. 12.3 ppb (12) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.22 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 4, 2021, 7 a.m. 9.9 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 26.0 ppb (25) 0.2 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 4, 2021, 6 a.m. 9.3 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A 26.0 ppb (25) 0.19 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 4, 2021, 5 a.m. 8.6 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 28.0 ppb (26) 0.16 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 4 a.m. 7.5 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.16 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 3 a.m. 8.7 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A 30.0 ppb (28) 0.19 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
March 4, 2021, 2 a.m. 9.1 ppb (9) 1.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 4, 2021, 1 a.m. 18.4 ppb (18) 2.9 ppb (3) N/A 16.0 ppb (16) N/A N/A 24.0 ppb (23) 0.24 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 4, 2021, midnight 11.1 ppb (11) 1.3 ppb (2) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) 0.2 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 3, 2021, 11 p.m. 10.0 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 40.0 ppb (38) 0.22 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 3, 2021, 10 p.m. 10.2 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 43.0 ppb (40) 0.23 ppb (3) N/A 27.0 μg/m3 (83) 83.0
 
March 3, 2021, 9 p.m. 8.9 ppb (9) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A 42.0 ppb (39) 0.21 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 8 p.m. 9.0 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) 0.19 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
March 3, 2021, 7 p.m. 10.1 ppb (10) 2.8 ppb (3) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.2 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
March 3, 2021, 6 p.m. 14.9 ppb (15) 4.5 ppb (5) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 5 p.m. 20.4 ppb (20) 6.4 ppb (7) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) 0.32 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
March 3, 2021, 4 p.m. 33.3 ppb (32) 14.5 ppb (14) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (11) 0.4 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
March 3, 2021, 3 p.m. 32.9 ppb (32) 10.5 ppb (10) N/A 22.0 ppb (21) N/A N/A 10.0 ppb (10) 0.36 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 2 p.m. 29.2 ppb (28) 9.7 ppb (10) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 3, 2021, 1 p.m. 29.1 ppb (28) 4.9 ppb (5) N/A 24.0 ppb (23) N/A N/A 10.0 ppb (10) 0.36 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
March 3, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (70) 70.0
 
March 3, 2021, 11 a.m. 23.1 ppb (22) 2.1 ppb (2) N/A 21.0 ppb (20) N/A N/A 14.0 ppb (13) 0.33 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
March 3, 2021, 10 a.m. 31.7 ppb (30) 3.7 ppb (4) N/A 28.0 ppb (27) N/A N/A 6.0 ppb (6) 0.36 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 3, 2021, 9 a.m. 23.6 ppb (23) 1.7 ppb (2) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) 0.35 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
March 3, 2021, 8 a.m. 21.7 ppb (21) 1.2 ppb (2) N/A 21.0 ppb (20) N/A N/A 14.0 ppb (13) 0.36 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
March 3, 2021, 7 a.m. 22.4 ppb (22) 1.2 ppb (2) N/A 21.0 ppb (20) N/A N/A 16.0 ppb (15) 0.37 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
March 3, 2021, 6 a.m. 21.6 ppb (21) 1.3 ppb (2) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (17) 0.38 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
March 3, 2021, 5 a.m. 51.1 ppb (49) 17.8 ppb (17) N/A 33.0 ppb (32) N/A N/A 4.0 ppb (4) 0.57 ppb (7) N/A 64.0 μg/m3 (156) 156.0
 
March 3, 2021, 4 a.m. 79.9 ppb (79) 40.4 ppb (39) N/A 40.0 ppb (38) N/A N/A 1.0 ppb (1) 1.12 ppb (13) N/A 37.0 μg/m3 (105) 105.0
 
March 3, 2021, 3 a.m. 57.4 ppb (55) 16.7 ppb (16) N/A 41.0 ppb (39) N/A N/A 2.0 ppb (2) 0.81 ppb (10) N/A 29.0 μg/m3 (87) 87.0
 
March 3, 2021, 2 a.m. 35.7 ppb (34) 3.5 ppb (4) N/A 32.0 ppb (31) N/A N/A 12.0 ppb (12) 0.61 ppb (7) N/A 28.0 μg/m3 (85) 85.0
 
March 3, 2021, 1 a.m. 19.5 ppb (19) 0.9 ppb (1) N/A 19.0 ppb (18) N/A N/A 31.0 ppb (29) 0.35 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 3, 2021, midnight 9.3 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 42.0 ppb (39) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 2, 2021, 11 p.m. 13.4 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A 39.0 ppb (37) 0.24 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 2, 2021, 10 p.m. 14.7 ppb (14) 2.6 ppb (3) N/A 12.0 ppb (12) N/A N/A 36.0 ppb (34) 0.25 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 2, 2021, 9 p.m. 19.6 ppb (19) 5.4 ppb (6) N/A 14.0 ppb (14) N/A N/A 33.0 ppb (31) 0.25 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 2, 2021, 8 p.m. 15.6 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) 0.28 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 2, 2021, 7 p.m. 25.1 ppb (24) 9.1 ppb (9) N/A 16.0 ppb (16) N/A N/A 21.0 ppb (20) 0.28 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
March 2, 2021, 6 p.m. 34.2 ppb (33) 15.1 ppb (15) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (14) 0.38 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 2, 2021, 5 p.m. 35.4 ppb (34) 17.1 ppb (17) N/A 18.0 ppb (17) N/A N/A 12.0 ppb (12) 0.4 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 2, 2021, 4 p.m. 33.7 ppb (32) 14.4 ppb (14) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (11) 0.4 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 2, 2021, 3 p.m. 47.7 ppb (45) 23.0 ppb (22) N/A 25.0 ppb (24) N/A N/A 6.0 ppb (6) 0.43 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
March 2, 2021, 2 p.m. 54.0 ppb (51) 23.8 ppb (23) N/A 30.0 ppb (29) N/A N/A 2.0 ppb (2) 0.43 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
March 2, 2021, 1 p.m. 33.3 ppb (32) 8.5 ppb (9) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) 0.37 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
March 2, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
March 2, 2021, 11 a.m. 26.5 ppb (25) 2.4 ppb (3) N/A 24.0 ppb (23) N/A N/A 6.0 ppb (6) 0.39 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
March 2, 2021, 10 a.m. 23.2 ppb (22) 1.5 ppb (2) N/A 22.0 ppb (21) N/A N/A 11.0 ppb (11) 0.41 ppb (5) N/A 24.0 μg/m3 (77) 77.0
 
March 2, 2021, 9 a.m. 12.4 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) 0.24 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
March 2, 2021, 8 a.m. 9.5 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) 0.22 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 2, 2021, 7 a.m. 11.1 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) 0.22 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 2, 2021, 6 a.m. 8.2 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.22 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 2, 2021, 5 a.m. 11.5 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.26 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
March 2, 2021, 4 a.m. 29.8 ppb (29) 1.2 ppb (2) N/A 29.0 ppb (28) N/A N/A 23.0 ppb (22) 0.53 ppb (6) N/A 29.0 μg/m3 (87) 87.0
 
March 2, 2021, 3 a.m. 26.5 ppb (25) 0.6 ppb (1) N/A 26.0 ppb (25) N/A N/A 28.0 ppb (26) 0.51 ppb (6) N/A 30.0 μg/m3 (89) 89.0
 
March 2, 2021, 2 a.m. 18.0 ppb (17) 0.5 ppb (1) N/A 18.0 ppb (17) N/A N/A 39.0 ppb (37) 0.39 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
March 2, 2021, 1 a.m. 9.6 ppb (10) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 50.0 ppb (47) 0.29 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
March 2, 2021, midnight 8.2 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 52.0 ppb (49) 0.28 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
March 1, 2021, 11 p.m. 7.4 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (49) 0.28 ppb (4) N/A 24.0 μg/m3 (77) 77.0
 
March 1, 2021, 10 p.m. 9.1 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 51.0 ppb (48) 0.31 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
March 1, 2021, 9 p.m. 11.2 ppb (11) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A 50.0 ppb (47) 0.39 ppb (5) N/A 34.0 μg/m3 (98) 98.0
 
March 1, 2021, 8 p.m. 10.2 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 55.0 ppb (51) 0.51 ppb (6) N/A 44.0 μg/m3 (122) 122.0
 
March 1, 2021, 7 p.m. 12.3 ppb (12) 2.4 ppb (3) N/A 10.0 ppb (10) N/A N/A 40.0 ppb (38) 0.33 ppb (4) N/A 25.0 μg/m3 (79) 79.0
 
March 1, 2021, 6 p.m. 17.9 ppb (17) 6.3 ppb (6) N/A 12.0 ppb (12) N/A N/A 28.0 ppb (26) 0.23 ppb (3) N/A 20.0 μg/m3 (68) 68.0
 
March 1, 2021, 5 p.m. 17.5 ppb (17) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.24 ppb (3) N/A 22.0 μg/m3 (72) 72.0
 
March 1, 2021, 4 p.m. 18.0 ppb (17) 5.8 ppb (6) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.26 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
March 1, 2021, 3 p.m. 25.4 ppb (24) 8.2 ppb (8) N/A 17.0 ppb (17) N/A N/A 14.0 ppb (13) 0.26 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
March 1, 2021, 2 p.m. 34.4 ppb (33) 12.7 ppb (12) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.23 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 1, 2021, 1 p.m. 17.5 ppb (17) 3.0 ppb (3) N/A 14.0 ppb (14) N/A N/A 14.0 ppb (13) 0.21 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 1, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 1, 2021, 11 a.m. 17.0 ppb (17) 3.6 ppb (4) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) 0.21 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 1, 2021, 10 a.m. 31.2 ppb (30) 9.4 ppb (9) N/A 22.0 ppb (21) N/A N/A 9.0 ppb (9) 0.21 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
March 1, 2021, 9 a.m. 20.4 ppb (20) 1.8 ppb (2) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) 0.22 ppb (3) N/A 16.0 μg/m3 (60) 60.0
 
March 1, 2021, 8 a.m. 20.3 ppb (20) 2.2 ppb (3) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (10) 0.23 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
March 1, 2021, 7 a.m. 31.6 ppb (30) 7.0 ppb (7) N/A 25.0 ppb (24) N/A N/A 7.0 ppb (7) 0.26 ppb (4) N/A 21.0 μg/m3 (70) 70.0