ID: 194

AQSQID: 060711004

Site Name: Upland

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

Updated: March 6, 2021, 4:32 p.m.

Location: Upland (Los Olivos), CA

Reporting: True, Located: True

Current AQI: 44.0

Upland (Los Olivos) CA, US: 34.10366, -117.629096

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 3 p.m. 34.9 ppb (33) 9.8 ppb (10) N/A 25.0 ppb (24) N/A N/A 16.0 ppb (15) 0.46 ppb (6) 37.4 μg/m3 (35) 10.4 μg/m3 (44) 44.0
 
March 6, 2021, 2 p.m. 38.2 ppb (37) 7.2 ppb (7) N/A 31.0 ppb (30) N/A N/A 5.0 ppb (5) 0.53 ppb (6) 33.1 μg/m3 (31) 8.5 μg/m3 (36) 37.0
 
March 6, 2021, 1 p.m. 25.5 ppb (25) 2.5 ppb (3) N/A 23.0 ppb (22) N/A N/A 6.0 ppb (6) 0.4 ppb (5) 23.5 μg/m3 (22) 7.2 μg/m3 (31) 31.0
 
March 6, 2021, noon 21.7 ppb (21) 0.8 ppb (1) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) 0.39 ppb (5) 25.2 μg/m3 (24) 10.7 μg/m3 (45) 45.0
 
March 6, 2021, 11 a.m. 23.3 ppb (22) 0.8 ppb (1) N/A 23.0 ppb (22) N/A N/A 11.0 ppb (11) 0.43 ppb (5) 27.7 μg/m3 (26) 11.2 μg/m3 (47) 47.0
 
March 6, 2021, 10 a.m. 24.2 ppb (23) 1.3 ppb (2) N/A 23.0 ppb (22) N/A N/A 10.0 ppb (10) 0.41 ppb (5) 20.8 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
March 6, 2021, 9 a.m. 28.6 ppb (27) 1.2 ppb (2) N/A 27.0 ppb (26) N/A N/A 9.0 ppb (9) 0.48 ppb (6) 29.6 μg/m3 (28) 15.1 μg/m3 (58) 58.0
 
March 6, 2021, 8 a.m. 29.3 ppb (28) 1.5 ppb (2) N/A 28.0 ppb (27) N/A N/A 9.0 ppb (9) 0.5 ppb (6) 27.0 μg/m3 (25) 17.3 μg/m3 (62) 62.0
 
March 6, 2021, 7 a.m. 39.7 ppb (38) 3.8 ppb (4) N/A 36.0 ppb (34) N/A N/A 5.0 ppb (5) 0.63 ppb (7) 31.8 μg/m3 (30) 9.3 μg/m3 (39) 39.0
 
March 6, 2021, 6 a.m. 41.4 ppb (40) 4.8 ppb (5) N/A 37.0 ppb (35) N/A N/A 5.0 ppb (5) 0.75 ppb (10) 30.3 μg/m3 (29) 11.7 μg/m3 (49) 49.0
 
March 6, 2021, 5 a.m. 40.1 ppb (38) 6.3 ppb (6) N/A 34.0 ppb (33) N/A N/A 10.0 ppb (10) 0.64 ppb (7) 34.6 μg/m3 (33) 8.5 μg/m3 (36) 38.0
 
March 6, 2021, 4 a.m. 33.1 ppb (32) 3.3 ppb (4) N/A 30.0 ppb (29) N/A N/A 22.0 ppb (21) 0.48 ppb (6) 32.8 μg/m3 (31) 8.1 μg/m3 (34) 34.0
 
March 6, 2021, 3 a.m. 23.6 ppb (23) 0.4 ppb (1) N/A 23.0 ppb (22) N/A N/A 34.0 ppb (32) 0.39 ppb (5) 35.1 μg/m3 (33) 9.8 μg/m3 (41) 41.0
 
March 6, 2021, 2 a.m. 20.7 ppb (20) 0.9 ppb (1) N/A 20.0 ppb (19) N/A N/A 44.0 ppb (41) 0.36 ppb (5) 36.1 μg/m3 (34) 9.3 μg/m3 (39) 41.0
 
March 6, 2021, 1 a.m. 19.7 ppb (19) 0.8 ppb (1) N/A 19.0 ppb (18) N/A N/A 51.0 ppb (48) 0.37 ppb (5) 43.8 μg/m3 (41) 9.8 μg/m3 (41) 48.0
 
March 6, 2021, midnight 15.2 ppb (15) 1.4 ppb (2) N/A 14.0 ppb (14) N/A N/A 55.0 ppb (51) 0.32 ppb (4) 38.3 μg/m3 (36) 4.4 μg/m3 (19) 51.0
 
March 5, 2021, 11 p.m. 10.2 ppb (10) 1.5 ppb (2) N/A 9.0 ppb (9) N/A N/A 55.0 ppb (51) 0.22 ppb (3) 23.5 μg/m3 (22) 3.5 μg/m3 (15) 51.0
 
March 5, 2021, 10 p.m. 8.9 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 55.0 ppb (51) 0.21 ppb (3) 22.3 μg/m3 (21) 8.0 μg/m3 (34) 51.0
 
March 5, 2021, 9 p.m. 8.2 ppb (8) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 54.0 ppb (50) 0.2 ppb (3) 12.4 μg/m3 (12) 8.0 μg/m3 (34) 50.0
 
March 5, 2021, 8 p.m. 7.5 ppb (8) 1.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 53.0 ppb (50) 0.2 ppb (3) 10.4 μg/m3 (10) 3.9 μg/m3 (17) 50.0
 
March 5, 2021, 7 p.m. 12.0 ppb (12) 2.7 ppb (3) N/A 9.0 ppb (9) N/A N/A 48.0 ppb (45) 0.23 ppb (3) 18.5 μg/m3 (18) 6.1 μg/m3 (26) 45.0
 
March 5, 2021, 6 p.m. 15.0 ppb (15) 3.7 ppb (4) N/A 11.0 ppb (11) N/A N/A 44.0 ppb (41) 0.25 ppb (3) 14.7 μg/m3 (14) 10.8 μg/m3 (46) 46.0
 
March 5, 2021, 5 p.m. 39.5 ppb (38) 14.6 ppb (14) N/A 25.0 ppb (24) N/A N/A 26.0 ppb (25) 0.41 ppb (5) 31.8 μg/m3 (30) 10.2 μg/m3 (43) 43.0
 
March 5, 2021, 4 p.m. 34.6 ppb (33) 12.1 ppb (12) N/A 22.0 ppb (21) N/A N/A 21.0 ppb (20) 0.41 ppb (5) 22.1 μg/m3 (21) 11.9 μg/m3 (50) 50.0
 
March 5, 2021, 3 p.m. 50.1 ppb (48) 20.3 ppb (20) N/A 30.0 ppb (29) N/A N/A 10.0 ppb (10) 0.56 ppb (7) 22.8 μg/m3 (22) 10.2 μg/m3 (43) 48.0
 
March 5, 2021, 2 p.m. 41.5 ppb (40) 10.8 ppb (11) N/A 31.0 ppb (30) N/A N/A 3.0 ppb (3) 0.49 ppb (6) 23.3 μg/m3 (22) 8.2 μg/m3 (35) 40.0
 
March 5, 2021, 1 p.m. 31.0 ppb (30) 3.6 ppb (4) N/A 27.0 ppb (26) N/A N/A 6.0 ppb (6) 0.53 ppb (6) 17.7 μg/m3 (17) 7.0 μg/m3 (30) 30.0
 
March 5, 2021, noon 25.6 ppb (25) 2.1 ppb (2) N/A 24.0 ppb (23) N/A N/A 7.0 ppb (7) 0.32 ppb (4) 19.7 μg/m3 (19) 5.0 μg/m3 (21) 25.0
 
March 5, 2021, 11 a.m. 20.4 ppb (20) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (10) 0.28 ppb (4) 16.2 μg/m3 (15) 3.2 μg/m3 (14) 20.0
 
March 5, 2021, 10 a.m. 22.9 ppb (22) 1.3 ppb (2) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.35 ppb (4) 22.3 μg/m3 (21) 1.5 μg/m3 (7) 22.0
 
March 5, 2021, 9 a.m. 23.6 ppb (23) 1.7 ppb (2) N/A 22.0 ppb (21) N/A N/A 8.0 ppb (8) 0.38 ppb (5) 23.3 μg/m3 (22) 6.8 μg/m3 (29) 29.0
 
March 5, 2021, 8 a.m. 28.7 ppb (28) 2.4 ppb (3) N/A 26.0 ppb (25) N/A N/A 6.0 ppb (6) 0.43 ppb (5) 23.3 μg/m3 (22) 8.3 μg/m3 (35) 35.0
 
March 5, 2021, 7 a.m. 32.0 ppb (31) 4.1 ppb (4) N/A 28.0 ppb (27) N/A N/A 5.0 ppb (5) 0.5 ppb (6) 28.6 μg/m3 (27) 9.2 μg/m3 (39) 39.0
 
March 5, 2021, 6 a.m. 40.9 ppb (39) 7.4 ppb (7) N/A 34.0 ppb (33) N/A N/A 3.0 ppb (3) 0.59 ppb (7) 27.4 μg/m3 (26) 9.0 μg/m3 (38) 39.0
 
March 5, 2021, 5 a.m. 42.1 ppb (40) 9.6 ppb (10) N/A 33.0 ppb (32) N/A N/A 4.0 ppb (4) 0.63 ppb (7) 28.4 μg/m3 (27) 5.6 μg/m3 (24) 40.0
 
March 5, 2021, 4 a.m. 33.4 ppb (32) 2.4 ppb (3) N/A 31.0 ppb (30) N/A N/A 11.0 ppb (11) 0.58 ppb (7) 33.0 μg/m3 (31) 7.2 μg/m3 (31) 32.0
 
March 5, 2021, 3 a.m. 25.3 ppb (24) 0.9 ppb (1) N/A 24.0 ppb (23) N/A N/A 26.0 ppb (25) 0.44 ppb (5) 34.6 μg/m3 (33) 10.3 μg/m3 (43) 43.0
 
March 5, 2021, 2 a.m. 18.0 ppb (17) 0.7 ppb (1) N/A 17.0 ppb (17) N/A N/A 36.0 ppb (34) 0.36 ppb (5) 29.1 μg/m3 (27) 5.6 μg/m3 (24) 34.0
 
March 5, 2021, 1 a.m. 11.8 ppb (12) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 44.0 ppb (41) 0.28 ppb (4) 20.8 μg/m3 (20) 1.8 μg/m3 (8) 41.0
 
March 5, 2021, midnight 7.8 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 48.0 ppb (45) 0.22 ppb (3) 15.2 μg/m3 (15) 4.9 μg/m3 (21) 45.0
 
March 4, 2021, 11 p.m. 6.9 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (46) 0.2 ppb (3) 14.4 μg/m3 (14) 2.8 μg/m3 (12) 46.0
 
March 4, 2021, 10 p.m. 7.5 ppb (8) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.2 ppb (3) 12.9 μg/m3 (12) 1.5 μg/m3 (7) 45.0
 
March 4, 2021, 9 p.m. 7.0 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) 0.19 ppb (3) 11.7 μg/m3 (11) 7.8 μg/m3 (33) 44.0
 
March 4, 2021, 8 p.m. 12.8 ppb (13) 3.7 ppb (4) N/A 9.0 ppb (9) N/A N/A 39.0 ppb (37) 0.22 ppb (3) 12.2 μg/m3 (12) 10.7 μg/m3 (45) 45.0
 
March 4, 2021, 7 p.m. 17.7 ppb (17) 5.7 ppb (6) N/A 12.0 ppb (12) N/A N/A 35.0 ppb (33) 0.24 ppb (3) 9.7 μg/m3 (9) 8.8 μg/m3 (37) 37.0
 
March 4, 2021, 6 p.m. 13.7 ppb (13) 4.4 ppb (5) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) 0.22 ppb (3) 7.1 μg/m3 (7) 7.3 μg/m3 (31) 33.0
 
March 4, 2021, 5 p.m. 17.4 ppb (17) 5.8 ppb (6) N/A 12.0 ppb (12) N/A N/A 30.0 ppb (28) 0.26 ppb (4) 10.8 μg/m3 (10) 7.5 μg/m3 (32) 32.0
 
March 4, 2021, 4 p.m. 36.5 ppb (35) 16.6 ppb (16) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (17) 0.39 ppb (5) 13.3 μg/m3 (13) 6.5 μg/m3 (28) 35.0
 
March 4, 2021, 3 p.m. 22.0 ppb (21) 6.6 ppb (7) N/A 15.0 ppb (15) N/A N/A 17.0 ppb (16) 0.32 ppb (4) 13.1 μg/m3 (13) 3.6 μg/m3 (16) 21.0
 
March 4, 2021, 2 p.m. 44.6 ppb (43) 21.1 ppb (20) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) 0.79 ppb (10) 18.5 μg/m3 (18) 2.8 μg/m3 (12) 43.0
 
March 4, 2021, 1 p.m. 33.3 ppb (32) 9.1 ppb (9) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) 0.41 ppb (5) 10.5 μg/m3 (10) 4.3 μg/m3 (18) 32.0
 
March 4, 2021, noon 27.3 ppb (26) 4.7 ppb (5) N/A 23.0 ppb (22) N/A N/A 1.0 ppb (1) 0.36 ppb (5) 16.7 μg/m3 (16) 2.4 μg/m3 (10) 26.0
 
March 4, 2021, 11 a.m. 18.2 ppb (18) 2.4 ppb (3) N/A 16.0 ppb (16) N/A N/A 6.0 ppb (6) 0.26 ppb (4) 9.5 μg/m3 (9) 1.9 μg/m3 (8) 18.0
 
March 4, 2021, 10 a.m. 13.5 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 7.0 ppb (7) 0.27 ppb (4) 9.2 μg/m3 (9) 3.3 μg/m3 (14) 14.0
 
March 4, 2021, 9 a.m. 16.1 ppb (16) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 6.0 ppb (6) 0.29 ppb (4) 11.5 μg/m3 (11) 1.4 μg/m3 (6) 16.0
 
March 4, 2021, 8 a.m. 15.1 ppb (15) 1.3 ppb (2) N/A 14.0 ppb (14) N/A N/A 8.0 ppb (8) 0.32 ppb (4) 11.3 μg/m3 (11) -0.7 μg/m3 (0) 15.0
 
March 4, 2021, 7 a.m. 15.6 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 13.0 ppb (13) 0.32 ppb (4) 10.5 μg/m3 (10) -0.2 μg/m3 (0) 15.0
 
March 4, 2021, 6 a.m. 20.9 ppb (20) 1.9 ppb (2) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) 0.38 ppb (5) 18.7 μg/m3 (18) 3.4 μg/m3 (15) 20.0
 
March 4, 2021, 5 a.m. 20.9 ppb (20) 3.1 ppb (3) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (11) 0.49 ppb (6) 20.8 μg/m3 (20) 7.0 μg/m3 (30) 30.0
 
March 4, 2021, 4 a.m. 22.4 ppb (22) 2.5 ppb (3) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (13) 0.43 ppb (5) 16.9 μg/m3 (16) 10.2 μg/m3 (43) 43.0
 
March 4, 2021, 3 a.m. 15.0 ppb (15) 1.3 ppb (2) N/A 14.0 ppb (14) N/A N/A 29.0 ppb (27) 0.3 ppb (4) 13.2 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
March 4, 2021, 2 a.m. 12.3 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 34.0 ppb (32) 0.28 ppb (4) 11.5 μg/m3 (11) 5.6 μg/m3 (24) 32.0
 
March 4, 2021, 1 a.m. 12.3 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A 35.0 ppb (33) 0.28 ppb (4) 8.9 μg/m3 (9) 5.8 μg/m3 (25) 33.0
 
March 4, 2021, midnight 12.4 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 36.0 ppb (34) 0.26 ppb (4) 7.2 μg/m3 (7) 2.0 μg/m3 (9) 34.0
 
March 3, 2021, 11 p.m. 9.1 ppb (9) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A 42.0 ppb (39) 0.23 ppb (3) 8.0 μg/m3 (8) 1.5 μg/m3 (7) 39.0
 
March 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) -0.4 μg/m3 (0) 6.0
 
March 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) 2.0 μg/m3 (9) 9.0
 
March 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) 5.8 μg/m3 (25) 25.0
 
March 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.9 μg/m3 (25) 6.6 μg/m3 (28) 28.0
 
March 3, 2021, 6 p.m. 17.7 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (16) N/A N/A 33.0 ppb (31) 0.31 ppb (4) 24.2 μg/m3 (23) 8.5 μg/m3 (36) 36.0
 
March 3, 2021, 5 p.m. 61.9 ppb (60) 26.0 ppb (25) N/A 36.0 ppb (34) N/A N/A 12.0 ppb (12) 0.56 ppb (7) 57.6 μg/m3 (53) 25.8 μg/m3 (80) 80.0
 
March 3, 2021, 4 p.m. 38.1 ppb (36) 14.9 ppb (15) N/A 23.0 ppb (22) N/A N/A 23.0 ppb (22) 0.48 ppb (6) 39.0 μg/m3 (37) 8.2 μg/m3 (35) 37.0
 
March 3, 2021, 3 p.m. 72.6 ppb (71) 32.8 ppb (31) N/A 40.0 ppb (38) N/A N/A 3.0 ppb (3) 0.73 ppb (8) 41.4 μg/m3 (39) 4.3 μg/m3 (18) 71.0
 
March 3, 2021, 2 p.m. 48.9 ppb (47) 11.5 ppb (11) N/A 37.0 ppb (35) N/A N/A 4.0 ppb (4) 0.57 ppb (7) 26.2 μg/m3 (25) 5.1 μg/m3 (22) 47.0
 
March 3, 2021, 1 p.m. 39.7 ppb (38) 4.8 ppb (5) N/A 35.0 ppb (34) N/A N/A 3.0 ppb (3) 0.44 ppb (5) 59.8 μg/m3 (54) 8.2 μg/m3 (35) 54.0
 
March 3, 2021, noon 29.2 ppb (28) 1.4 ppb (2) N/A 28.0 ppb (27) N/A N/A 8.0 ppb (8) 0.47 ppb (6) 28.9 μg/m3 (27) 10.9 μg/m3 (46) 46.0
 
March 3, 2021, 11 a.m. 32.0 ppb (31) 1.4 ppb (2) N/A 31.0 ppb (30) N/A N/A 6.0 ppb (6) 0.39 ppb (5) 28.7 μg/m3 (27) 8.0 μg/m3 (34) 34.0
 
March 3, 2021, 10 a.m. 31.0 ppb (30) 1.5 ppb (2) N/A 30.0 ppb (29) N/A N/A 8.0 ppb (8) 0.36 ppb (5) 29.8 μg/m3 (28) 1.7 μg/m3 (8) 30.0
 
March 3, 2021, 9 a.m. 25.5 ppb (25) 0.6 ppb (1) N/A 25.0 ppb (24) N/A N/A 13.0 ppb (13) 0.34 ppb (4) 19.2 μg/m3 (18) 2.9 μg/m3 (13) 25.0
 
March 3, 2021, 8 a.m. 24.6 ppb (24) 1.4 ppb (2) N/A 23.0 ppb (22) N/A N/A 15.0 ppb (14) 0.35 ppb (4) 21.8 μg/m3 (21) 3.7 μg/m3 (16) 24.0
 
March 3, 2021, 7 a.m. 23.7 ppb (23) 1.3 ppb (2) N/A 22.0 ppb (21) N/A N/A 16.0 ppb (15) 0.38 ppb (5) 19.9 μg/m3 (19) 7.0 μg/m3 (30) 30.0
 
March 3, 2021, 6 a.m. 20.9 ppb (20) 0.8 ppb (1) N/A 20.0 ppb (19) N/A N/A 21.0 ppb (20) 0.37 ppb (5) 21.8 μg/m3 (21) 2.5 μg/m3 (11) 21.0
 
March 3, 2021, 5 a.m. 23.2 ppb (22) 3.1 ppb (3) N/A 20.0 ppb (19) N/A N/A 25.0 ppb (24) 0.37 ppb (5) 19.8 μg/m3 (19) -1.2 μg/m3 (0) 24.0
 
March 3, 2021, 4 a.m. 20.1 ppb (19) 1.2 ppb (2) N/A 19.0 ppb (18) N/A N/A 30.0 ppb (28) 0.36 ppb (5) 16.7 μg/m3 (16) 3.5 μg/m3 (15) 28.0
 
March 3, 2021, 3 a.m. 12.0 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 41.0 ppb (38) 0.27 ppb (4) 19.2 μg/m3 (18) 2.2 μg/m3 (10) 38.0
 
March 3, 2021, 2 a.m. 11.8 ppb (12) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 42.0 ppb (39) 0.26 ppb (4) 17.2 μg/m3 (16) 1.0 μg/m3 (5) 39.0
 
March 3, 2021, 1 a.m. 13.5 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 43.0 ppb (40) 0.25 ppb (3) 23.0 μg/m3 (22) 3.5 μg/m3 (15) 40.0
 
March 3, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 27.6 μg/m3 (26) 2.7 μg/m3 (12) 26.0
 
March 2, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.2 μg/m3 (30) -0.6 μg/m3 (0) 30.0
 
March 2, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) -0.6 μg/m3 (0) 23.0
 
March 2, 2021, 9 p.m. 6.4 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 53.0 ppb (50) 0.19 ppb (3) 19.6 μg/m3 (19) 0.5 μg/m3 (3) 50.0
 
March 2, 2021, 8 p.m. 6.8 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) 0.2 ppb (3) 17.9 μg/m3 (17) -0.4 μg/m3 (0) 48.0
 
March 2, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.6 μg/m3 (19) 2.0 μg/m3 (9) 19.0
 
March 2, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.3 μg/m3 (21) 8.0 μg/m3 (34) 34.0
 
March 2, 2021, 5 p.m. 21.9 ppb (21) 6.9 ppb (7) N/A 15.0 ppb (15) N/A N/A 34.0 ppb (32) 0.28 ppb (4) 18.0 μg/m3 (17) 8.2 μg/m3 (35) 35.0
 
March 2, 2021, 4 p.m. 58.9 ppb (57) 26.0 ppb (25) N/A 33.0 ppb (32) N/A N/A 16.0 ppb (15) 0.5 ppb (6) 41.3 μg/m3 (39) 4.1 μg/m3 (18) 57.0
 
March 2, 2021, 3 p.m. 55.6 ppb (53) 22.5 ppb (22) N/A 33.0 ppb (32) N/A N/A 10.0 ppb (10) 0.59 ppb (7) 36.6 μg/m3 (34) 0.9 μg/m3 (4) 53.0
 
March 2, 2021, 2 p.m. 51.7 ppb (49) 14.6 ppb (14) N/A 37.0 ppb (35) N/A N/A 5.0 ppb (5) 0.47 ppb (6) 22.3 μg/m3 (21) 0.6 μg/m3 (3) 49.0
 
March 2, 2021, 1 p.m. 34.9 ppb (33) 3.8 ppb (4) N/A 31.0 ppb (30) N/A N/A 8.0 ppb (8) 0.38 ppb (5) 15.0 μg/m3 (14) 4.3 μg/m3 (18) 33.0
 
March 2, 2021, noon 21.3 ppb (21) 1.9 ppb (2) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (16) 0.28 ppb (4) 13.5 μg/m3 (13) -0.5 μg/m3 (0) 21.0
 
March 2, 2021, 11 a.m. 12.0 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 25.0 ppb (24) 0.22 ppb (3) 13.7 μg/m3 (13) -3.8 μg/m3 (0) 24.0
 
March 2, 2021, 10 a.m. 16.3 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) 0.24 ppb (3) 21.2 μg/m3 (20) -2.2 μg/m3 (0) 20.0
 
March 2, 2021, 9 a.m. 13.8 ppb (14) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 22.0 ppb (21) 0.39 ppb (5) 78.5 μg/m3 (63) 2.4 μg/m3 (10) 63.0
 
March 2, 2021, 8 a.m. 10.5 ppb (10) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) 0.23 ppb (3) 17.0 μg/m3 (16) -1.9 μg/m3 (0) 26.0
 
March 2, 2021, 7 a.m. 15.7 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A 24.0 ppb (23) 0.33 ppb (4) 24.0 μg/m3 (23) -3.8 μg/m3 (0) 23.0
 
March 2, 2021, 6 a.m. 25.9 ppb (25) 3.0 ppb (3) N/A 23.0 ppb (22) N/A N/A 15.0 ppb (14) 0.37 ppb (5) 18.2 μg/m3 (17) 0.0 μg/m3 (0) 25.0
 
March 2, 2021, 5 a.m. 30.2 ppb (29) 1.8 ppb (2) N/A 28.0 ppb (27) N/A N/A 11.0 ppb (11) 0.46 ppb (6) 25.9 μg/m3 (24) 7.0 μg/m3 (30) 30.0
 
March 2, 2021, 4 a.m. 38.8 ppb (37) 5.0 ppb (5) N/A 34.0 ppb (33) N/A N/A 8.0 ppb (8) 0.51 ppb (6) 41.7 μg/m3 (39) 9.5 μg/m3 (40) 40.0
 
March 2, 2021, 3 a.m. 36.8 ppb (35) 5.1 ppb (5) N/A 32.0 ppb (31) N/A N/A 15.0 ppb (14) 0.55 ppb (7) 30.1 μg/m3 (28) 3.5 μg/m3 (15) 35.0
 
March 2, 2021, 2 a.m. 22.1 ppb (21) 2.6 ppb (3) N/A 20.0 ppb (19) N/A N/A 29.0 ppb (27) 0.36 ppb (5) 25.2 μg/m3 (24) -1.4 μg/m3 (0) 27.0
 
March 2, 2021, 1 a.m. 11.9 ppb (12) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A 40.0 ppb (38) 0.29 ppb (4) 19.6 μg/m3 (19) 1.2 μg/m3 (5) 38.0
 
March 2, 2021, midnight 7.8 ppb (8) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (43) 0.21 ppb (3) 11.2 μg/m3 (11) 1.8 μg/m3 (8) 43.0
 
March 1, 2021, 11 p.m. 6.7 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.23 ppb (3) 16.9 μg/m3 (16) 0.6 μg/m3 (3) 45.0
 
March 1, 2021, 10 p.m. 6.2 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) 0.23 ppb (3) 21.7 μg/m3 (21) 1.5 μg/m3 (7) 45.0
 
March 1, 2021, 9 p.m. 6.0 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) 0.19 ppb (3) 16.7 μg/m3 (16) 4.1 μg/m3 (18) 44.0
 
March 1, 2021, 8 p.m. 8.7 ppb (9) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (41) 0.21 ppb (3) 20.1 μg/m3 (19) 4.6 μg/m3 (20) 41.0
 
March 1, 2021, 7 p.m. 12.0 ppb (12) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A 41.0 ppb (38) 0.23 ppb (3) 21.0 μg/m3 (20) 6.8 μg/m3 (29) 38.0
 
March 1, 2021, 6 p.m. 24.9 ppb (24) 8.7 ppb (9) N/A 16.0 ppb (16) N/A N/A 33.0 ppb (31) 0.28 ppb (4) 27.9 μg/m3 (26) 7.5 μg/m3 (32) 32.0
 
March 1, 2021, 5 p.m. 29.7 ppb (29) 10.5 ppb (10) N/A 19.0 ppb (18) N/A N/A 29.0 ppb (27) 0.36 ppb (5) 28.4 μg/m3 (27) 10.4 μg/m3 (44) 44.0
 
March 1, 2021, 4 p.m. 34.0 ppb (33) 12.2 ppb (12) N/A 22.0 ppb (21) N/A N/A 23.0 ppb (22) 0.49 ppb (6) 30.4 μg/m3 (29) 13.1 μg/m3 (54) 54.0
 
March 1, 2021, 3 p.m. 41.1 ppb (39) 15.0 ppb (15) N/A 26.0 ppb (25) N/A N/A 14.0 ppb (13) 0.65 ppb (8) 20.8 μg/m3 (20) 7.9 μg/m3 (33) 39.0
 
March 1, 2021, 2 p.m. 45.1 ppb (43) 11.6 ppb (11) N/A 33.0 ppb (32) N/A N/A 5.0 ppb (5) 0.57 ppb (7) 29.7 μg/m3 (28) 6.0 μg/m3 (25) 43.0
 
March 1, 2021, 1 p.m. 28.5 ppb (27) 1.8 ppb (2) N/A 27.0 ppb (26) N/A N/A 11.0 ppb (11) 0.42 ppb (5) 32.6 μg/m3 (31) 1.4 μg/m3 (6) 31.0
 
March 1, 2021, noon 17.4 ppb (17) 1.0 ppb (1) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) 0.28 ppb (4) 19.2 μg/m3 (18) -0.5 μg/m3 (0) 18.0
 
March 1, 2021, 11 a.m. 13.5 ppb (13) 0.4 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.26 ppb (4) 17.7 μg/m3 (17) 2.4 μg/m3 (10) 23.0
 
March 1, 2021, 10 a.m. 12.7 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) 0.29 ppb (4) 22.1 μg/m3 (21) 2.4 μg/m3 (10) 23.0
 
March 1, 2021, 9 a.m. 14.5 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 22.0 ppb (21) 0.33 ppb (4) 22.2 μg/m3 (21) 3.6 μg/m3 (16) 21.0
 
March 1, 2021, 8 a.m. 11.9 ppb (12) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.3 ppb (4) 21.8 μg/m3 (21) 4.4 μg/m3 (19) 25.0
 
March 1, 2021, 7 a.m. 12.5 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) 0.31 ppb (4) 18.7 μg/m3 (18) 1.2 μg/m3 (5) 27.0
 
March 1, 2021, 6 a.m. 13.7 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 28.0 ppb (26) 0.35 ppb (4) 20.6 μg/m3 (20) 3.9 μg/m3 (17) 26.0
 
March 1, 2021, 5 a.m. 19.3 ppb (19) 1.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 24.0 ppb (23) 0.43 ppb (5) 33.9 μg/m3 (32) 8.0 μg/m3 (34) 34.0
 
March 1, 2021, 4 a.m. 26.5 ppb (25) 4.0 ppb (4) N/A 23.0 ppb (22) N/A N/A 24.0 ppb (23) 0.45 ppb (6) 37.3 μg/m3 (35) 7.8 μg/m3 (33) 35.0
 
March 1, 2021, 3 a.m. 20.2 ppb (20) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A 31.0 ppb (29) 0.42 ppb (5) 43.0 μg/m3 (40) 9.3 μg/m3 (39) 40.0
 
March 1, 2021, 2 a.m. 15.9 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 36.0 ppb (34) 0.37 ppb (5) 32.3 μg/m3 (30) 4.8 μg/m3 (20) 34.0
 
March 1, 2021, 1 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) 0.25 ppb (3) 34.6 μg/m3 (33) -1.4 μg/m3 (0) 48.0
 
March 1, 2021, midnight 3.5 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (51) 0.21 ppb (3) 30.8 μg/m3 (29) 2.0 μg/m3 (9) 51.0
 
Feb. 28, 2021, 11 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (51) 0.2 ppb (3) 35.8 μg/m3 (34) 6.6 μg/m3 (28) 51.0
 
Feb. 28, 2021, 10 p.m. 3.4 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (50) 0.2 ppb (3) 32.2 μg/m3 (30) 5.1 μg/m3 (22) 50.0
 
Feb. 28, 2021, 9 p.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (49) 0.2 ppb (3) 35.6 μg/m3 (33) 2.3 μg/m3 (10) 49.0
 
Feb. 28, 2021, 8 p.m. 4.2 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (47) 0.2 ppb (3) 26.4 μg/m3 (25) 3.2 μg/m3 (14) 47.0
 
Feb. 28, 2021, 7 p.m. 6.6 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) 0.26 ppb (4) 29.4 μg/m3 (28) 7.1 μg/m3 (30) 44.0
 
Feb. 28, 2021, 6 p.m. 6.0 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (43) 0.22 ppb (3) 31.1 μg/m3 (29) 9.0 μg/m3 (38) 43.0
 
Feb. 28, 2021, 5 p.m. 7.3 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.24 ppb (3) 36.1 μg/m3 (34) 8.7 μg/m3 (37) 38.0
 
Feb. 28, 2021, 4 p.m. 9.2 ppb (9) 2.3 ppb (3) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.27 ppb (4) 34.4 μg/m3 (32) 5.5 μg/m3 (23) 34.0
 
Feb. 28, 2021, 3 p.m. 19.7 ppb (19) 4.8 ppb (5) N/A 15.0 ppb (15) N/A N/A 23.0 ppb (22) 0.34 ppb (4) 31.1 μg/m3 (29) 4.3 μg/m3 (18) 29.0
 
Feb. 28, 2021, 2 p.m. 17.8 ppb (17) 1.9 ppb (2) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.33 ppb (4) 24.0 μg/m3 (23) 6.4 μg/m3 (27) 27.0
 
Feb. 28, 2021, 1 p.m. 15.8 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) 0.28 ppb (4) 29.7 μg/m3 (28) 6.2 μg/m3 (26) 28.0
 
Feb. 28, 2021, noon 11.0 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.29 ppb (4) 27.9 μg/m3 (26) 7.9 μg/m3 (33) 33.0
 
Feb. 28, 2021, 11 a.m. 11.0 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.29 ppb (4) 29.4 μg/m3 (28) 8.2 μg/m3 (35) 35.0
 
Feb. 28, 2021, 10 a.m. 12.2 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) 0.36 ppb (5) 29.9 μg/m3 (28) 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 9 a.m. 13.1 ppb (13) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) 0.34 ppb (4) 27.4 μg/m3 (26) 10.2 μg/m3 (43) 43.0
 
Feb. 28, 2021, 8 a.m. 15.8 ppb (15) 0.8 ppb (1) N/A 15.0 ppb (15) N/A N/A 22.0 ppb (21) 0.41 ppb (5) 31.8 μg/m3 (30) 13.2 μg/m3 (54) 54.0
 
Feb. 28, 2021, 7 a.m. 22.1 ppb (21) 1.1 ppb (2) N/A 21.0 ppb (20) N/A N/A 16.0 ppb (15) 0.48 ppb (6) 36.1 μg/m3 (34) 12.9 μg/m3 (53) 53.0
 
Feb. 28, 2021, 6 a.m. 24.5 ppb (24) 0.9 ppb (1) N/A 24.0 ppb (23) N/A N/A 16.0 ppb (15) 0.54 ppb (6) 47.3 μg/m3 (44) 16.6 μg/m3 (61) 61.0
 
Feb. 28, 2021, 5 a.m. 25.5 ppb (25) 1.9 ppb (2) N/A 24.0 ppb (23) N/A N/A 18.0 ppb (17) 0.52 ppb (6) 43.9 μg/m3 (41) 12.7 μg/m3 (53) 53.0
 
Feb. 28, 2021, 4 a.m. 25.2 ppb (24) 2.5 ppb (3) N/A 23.0 ppb (22) N/A N/A 19.0 ppb (18) 0.62 ppb (7) 51.9 μg/m3 (49) 10.5 μg/m3 (44) 49.0
 
Feb. 28, 2021, 3 a.m. 24.4 ppb (24) 1.9 ppb (2) N/A 23.0 ppb (22) N/A N/A 27.0 ppb (25) 0.49 ppb (6) 40.5 μg/m3 (38) 9.5 μg/m3 (40) 40.0
 
Feb. 28, 2021, 2 a.m. 14.7 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 41.0 ppb (38) 0.37 ppb (5) 40.0 μg/m3 (38) 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 1 a.m. 11.1 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 52.0 ppb (49) 0.31 ppb (4) 50.5 μg/m3 (47) 10.5 μg/m3 (44) 49.0
 
Feb. 28, 2021, midnight 8.0 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 60.0 ppb (68) 0.28 ppb (4) 40.5 μg/m3 (38) 9.8 μg/m3 (41) 68.0
 
Feb. 27, 2021, 11 p.m. 6.7 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 61.0 ppb (71) 0.24 ppb (3) 27.6 μg/m3 (26) 11.2 μg/m3 (47) 71.0
 
Feb. 27, 2021, 10 p.m. 5.8 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 61.0 ppb (71) 0.24 ppb (3) 34.2 μg/m3 (32) 13.0 μg/m3 (53) 71.0
 
Feb. 27, 2021, 9 p.m. 6.2 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 58.0 ppb (61) 0.23 ppb (3) 31.0 μg/m3 (29) 11.0 μg/m3 (46) 61.0
 
Feb. 27, 2021, 8 p.m. 10.5 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A N/A 50.0 ppb (47) 0.26 ppb (4) 40.3 μg/m3 (38) 11.0 μg/m3 (46) 47.0
 
Feb. 27, 2021, 7 p.m. 16.2 ppb (16) 4.1 ppb (4) N/A 12.0 ppb (12) N/A N/A 46.0 ppb (43) 0.32 ppb (4) 42.7 μg/m3 (40) 13.5 μg/m3 (54) 54.0
 
Feb. 27, 2021, 6 p.m. 28.8 ppb (28) 8.8 ppb (9) N/A 20.0 ppb (19) N/A N/A 36.0 ppb (34) 0.41 ppb (5) 51.5 μg/m3 (48) 19.0 μg/m3 (66) 66.0
 
Feb. 27, 2021, 5 p.m. 29.4 ppb (28) 9.4 ppb (9) N/A 20.0 ppb (19) N/A N/A 31.0 ppb (29) 0.41 ppb (5) 40.1 μg/m3 (38) 20.9 μg/m3 (70) 70.0
 
Feb. 27, 2021, 4 p.m. 30.1 ppb (29) 9.0 ppb (9) N/A 21.0 ppb (20) N/A N/A 26.0 ppb (25) 0.42 ppb (5) 41.8 μg/m3 (39) 18.7 μg/m3 (65) 65.0