ID: 139

AQSQID: 060290014

Site Name: Bakersfield - California Ave

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

Updated: March 3, 2021, 11:32 p.m.

Location: Bakersfield (Park Stockdale), CA

Reporting: True, Located: True

Current AQI: 34.0

Bakersfield (Park Stockdale) CA, US: 35.356615, -119.062613

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 24, 2021, 10 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 24, 2021, 9 p.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 24, 2021, 8 p.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 8.0 μg/m3 (34) 35.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 24, 2021, 3 p.m. 88.6 ppb (88) 56.7 ppb (54) N/A 32.0 ppb (31) N/A N/A 3.0 ppb (3) N/A N/A 27.0 μg/m3 (83) 88.0
 
Feb. 24, 2021, 2 p.m. 74.1 ppb (73) 46.2 ppb (44) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) N/A N/A 24.0 μg/m3 (77) 77.0
 
Feb. 24, 2021, 1 p.m. 52.1 ppb (50) 25.1 ppb (24) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (66) 66.0
 
Feb. 24, 2021, 11 a.m. 44.2 ppb (42) 11.9 ppb (12) N/A 32.0 ppb (31) N/A N/A 2.0 ppb (2) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 24, 2021, 10 a.m. 30.5 ppb (29) 4.7 ppb (5) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 24, 2021, 9 a.m. 27.2 ppb (26) 2.0 ppb (2) N/A 25.0 ppb (24) N/A N/A 5.0 ppb (5) N/A N/A 29.0 μg/m3 (87) 87.0
 
Feb. 24, 2021, 8 a.m. 21.2 ppb (20) 1.1 ppb (2) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (10) N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 24, 2021, 7 a.m. 24.4 ppb (24) 2.1 ppb (2) N/A 22.0 ppb (21) N/A N/A 11.0 ppb (11) N/A N/A 28.0 μg/m3 (85) 85.0
 
Feb. 24, 2021, 6 a.m. 28.7 ppb (28) 2.2 ppb (3) N/A 27.0 ppb (26) N/A N/A 10.0 ppb (10) N/A N/A 27.0 μg/m3 (83) 83.0
 
Feb. 24, 2021, 5 a.m. 35.4 ppb (34) 4.2 ppb (4) N/A 31.0 ppb (30) N/A N/A 7.0 ppb (7) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 24, 2021, 4 a.m. 27.9 ppb (27) 1.2 ppb (2) N/A 27.0 ppb (26) N/A N/A 12.0 ppb (12) N/A N/A 21.0 μg/m3 (70) 70.0
 
Feb. 24, 2021, 3 a.m. 17.3 ppb (17) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 20.0 ppb (19) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 24, 2021, 2 a.m. 6.4 ppb (7) -0.2 ppb (0) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 1 a.m. 3.7 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 24, 2021, midnight 2.5 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 23, 2021, 11 p.m. 2.3 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 23, 2021, 10 p.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 23, 2021, 9 p.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 18.0 μg/m3 (64) 64.0
 
Feb. 23, 2021, 8 p.m. 6.5 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 21.0 μg/m3 (70) 70.0
 
Feb. 23, 2021, 7 p.m. 7.6 ppb (8) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 23, 2021, 6 p.m. 9.2 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 23, 2021, 5 p.m. N/A 5.9 ppb (6) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 23, 2021, 4 p.m. 60.0 ppb (58) 35.1 ppb (34) N/A 25.0 ppb (24) N/A N/A 8.0 ppb (8) N/A N/A 13.0 μg/m3 (53) 58.0
 
Feb. 23, 2021, 3 p.m. 55.6 ppb (53) 32.3 ppb (31) N/A 23.0 ppb (22) N/A N/A 3.0 ppb (3) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 23, 2021, 2 p.m. 48.1 ppb (46) 25.9 ppb (25) N/A 22.0 ppb (21) N/A N/A 2.0 ppb (2) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 23, 2021, 1 p.m. 46.3 ppb (44) 20.0 ppb (19) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (68) 68.0
 
Feb. 23, 2021, 11 a.m. 40.6 ppb (39) 14.9 ppb (15) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 23, 2021, 10 a.m. 32.8 ppb (31) 7.7 ppb (8) N/A 25.0 ppb (24) N/A N/A 2.0 ppb (2) N/A N/A 20.0 μg/m3 (68) 68.0
 
Feb. 23, 2021, 9 a.m. 25.2 ppb (24) 2.8 ppb (3) N/A 22.0 ppb (21) N/A N/A 4.0 ppb (4) N/A N/A 19.0 μg/m3 (66) 66.0
 
Feb. 23, 2021, 8 a.m. 29.6 ppb (28) 4.9 ppb (5) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) N/A N/A 21.0 μg/m3 (70) 70.0
 
Feb. 23, 2021, 7 a.m. 26.6 ppb (26) 4.2 ppb (4) N/A 22.0 ppb (21) N/A N/A 2.0 ppb (2) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 23, 2021, 6 a.m. 31.4 ppb (30) 4.8 ppb (5) N/A 27.0 ppb (26) N/A N/A 3.0 ppb (3) N/A N/A 25.0 μg/m3 (79) 79.0
 
Feb. 23, 2021, 5 a.m. 27.0 ppb (26) 1.0 ppb (1) N/A 26.0 ppb (25) N/A N/A 9.0 ppb (9) N/A N/A 32.0 μg/m3 (93) 93.0
 
Feb. 23, 2021, 4 a.m. 20.6 ppb (20) 0.3 ppb (1) N/A 20.0 ppb (19) N/A N/A 17.0 ppb (16) N/A N/A 32.0 μg/m3 (93) 93.0
 
Feb. 23, 2021, 3 a.m. 18.1 ppb (18) 0.2 ppb (1) N/A 18.0 ppb (17) N/A N/A 24.0 ppb (23) N/A N/A 35.0 μg/m3 (100) 100.0
 
Feb. 23, 2021, 2 a.m. 10.4 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) N/A N/A 26.0 μg/m3 (81) 81.0
 
Feb. 23, 2021, 1 a.m. 5.2 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 23, 2021, midnight 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 3.0 μg/m3 (13) 35.0
 
Feb. 22, 2021, 11 p.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
Feb. 22, 2021, 10 p.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 22, 2021, 9 p.m. 5.7 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 22, 2021, 8 p.m. 7.9 ppb (8) 1.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 22, 2021, 7 p.m. 13.9 ppb (14) 4.2 ppb (4) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 22, 2021, 6 p.m. 17.8 ppb (17) 6.7 ppb (7) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 22, 2021, 5 p.m. 15.7 ppb (15) 6.4 ppb (7) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 22, 2021, 4 p.m. 33.7 ppb (32) 17.3 ppb (17) N/A 16.0 ppb (16) N/A N/A 8.0 ppb (8) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 22, 2021, 3 p.m. 63.5 ppb (62) 42.9 ppb (41) N/A 21.0 ppb (20) N/A N/A 3.0 ppb (3) N/A N/A 13.0 μg/m3 (53) 62.0
 
Feb. 22, 2021, 2 p.m. 60.1 ppb (58) 37.8 ppb (36) N/A 22.0 ppb (21) N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (53) 58.0
 
Feb. 22, 2021, 1 p.m. 43.6 ppb (42) 24.6 ppb (24) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 22, 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
 
Feb. 22, 2021, 11 a.m. 31.5 ppb (30) 11.7 ppb (12) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 22, 2021, 10 a.m. 21.8 ppb (21) 2.5 ppb (3) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 22, 2021, 9 a.m. 36.2 ppb (35) 11.2 ppb (11) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 22, 2021, 8 a.m. 26.3 ppb (25) 4.0 ppb (4) N/A 22.0 ppb (21) N/A N/A 2.0 ppb (2) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 22, 2021, 7 a.m. 35.9 ppb (34) 9.5 ppb (9) N/A 27.0 ppb (26) N/A N/A 5.0 ppb (5) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 22, 2021, 6 a.m. 17.0 ppb (17) 0.5 ppb (1) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 22, 2021, 5 a.m. 17.5 ppb (17) 2.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 22, 2021, 4 a.m. 9.9 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 22, 2021, 3 a.m. 10.7 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 22, 2021, 2 a.m. 7.3 ppb (7) -0.2 ppb (0) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 22, 2021, 1 a.m. 2.2 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
Feb. 22, 2021, midnight 1.4 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
Feb. 21, 2021, 11 p.m. 1.4 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
Feb. 21, 2021, 10 p.m. 1.4 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
Feb. 21, 2021, 9 p.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
Feb. 21, 2021, 8 p.m. 1.9 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 21, 2021, 7 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Feb. 21, 2021, 6 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Feb. 21, 2021, 5 p.m. 7.5 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, 4 p.m. 10.8 ppb (11) 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, 3 p.m. 17.0 ppb (17) 4.6 ppb (5) N/A 12.0 ppb (12) N/A N/A 10.0 ppb (10) N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 21, 2021, 2 p.m. 21.1 ppb (20) 5.6 ppb (6) N/A 16.0 ppb (16) N/A N/A 5.0 ppb (5) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 21, 2021, 1 p.m. 24.1 ppb (23) 6.1 ppb (6) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) N/A N/A 5.0 μg/m3 (21) 23.0
 
Feb. 21, 2021, noon 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
 
Feb. 21, 2021, 11 a.m. 37.0 ppb (35) 11.9 ppb (12) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 21, 2021, 10 a.m. 30.9 ppb (30) 10.6 ppb (10) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 21, 2021, 9 a.m. 28.9 ppb (28) 7.5 ppb (8) N/A 21.0 ppb (20) N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 21, 2021, 8 a.m. 32.8 ppb (31) 7.4 ppb (7) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) N/A N/A 19.0 μg/m3 (66) 66.0
 
Feb. 21, 2021, 7 a.m. 24.9 ppb (24) 3.9 ppb (4) N/A 21.0 ppb (20) N/A N/A 5.0 ppb (5) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 21, 2021, 6 a.m. 27.4 ppb (26) 3.8 ppb (4) N/A 24.0 ppb (23) N/A N/A 5.0 ppb (5) N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 21, 2021, 5 a.m. 17.3 ppb (17) 1.2 ppb (2) N/A 16.0 ppb (16) N/A N/A 12.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 21, 2021, 4 a.m. 16.7 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A N/A 13.0 ppb (13) N/A N/A 19.0 μg/m3 (66) 66.0
 
Feb. 21, 2021, 3 a.m. 9.0 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 21, 2021, 2 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 21, 2021, 1 a.m. 2.3 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
Feb. 21, 2021, midnight 1.4 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Feb. 20, 2021, 11 p.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Feb. 20, 2021, 10 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 20, 2021, 9 p.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
Feb. 20, 2021, 8 p.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
Feb. 20, 2021, 7 p.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
Feb. 20, 2021, 6 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
Feb. 20, 2021, 5 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
Feb. 20, 2021, 4 p.m. 5.3 ppb (5) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 20, 2021, 3 p.m. 5.1 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (14) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 20, 2021, 2 p.m. 6.1 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 12.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 20, 2021, 1 p.m. 6.0 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (11) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 20, 2021, 11 a.m. 8.5 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (7) N/A N/A 11.0 ppb (11) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 20, 2021, 10 a.m. N/A 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 12.0 ppb (12) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 20, 2021, 9 a.m. 48.0 ppb (46) 21.6 ppb (21) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) N/A N/A 23.0 μg/m3 (74) 74.0
 
Feb. 20, 2021, 8 a.m. 39.0 ppb (37) 10.9 ppb (11) N/A 28.0 ppb (27) N/A N/A 2.0 ppb (2) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 20, 2021, 7 a.m. 32.9 ppb (32) 4.8 ppb (5) N/A 28.0 ppb (27) N/A N/A 3.0 ppb (3) N/A N/A 18.0 μg/m3 (64) 64.0
 
Feb. 20, 2021, 6 a.m. 28.7 ppb (28) 2.0 ppb (2) N/A 27.0 ppb (26) N/A N/A 7.0 ppb (7) N/A N/A 27.0 μg/m3 (83) 83.0
 
Feb. 20, 2021, 5 a.m. 41.1 ppb (39) 8.0 ppb (8) N/A 33.0 ppb (32) N/A N/A 5.0 ppb (5) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 20, 2021, 4 a.m. 30.8 ppb (30) 2.6 ppb (3) N/A 28.0 ppb (27) N/A N/A 10.0 ppb (10) N/A N/A 18.0 μg/m3 (64) 64.0
 
Feb. 20, 2021, 3 a.m. 19.9 ppb (19) 0.5 ppb (1) N/A 19.0 ppb (18) N/A N/A 19.0 ppb (18) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 20, 2021, 2 a.m. 10.6 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 20, 2021, 1 a.m. 3.2 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
Feb. 20, 2021, midnight 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 19, 2021, 11 p.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
Feb. 19, 2021, 10 p.m. 2.4 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 19, 2021, 9 p.m. 3.7 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
Feb. 19, 2021, 8 p.m. 5.3 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 8.0 μg/m3 (34) 35.0
 
Feb. 19, 2021, 7 p.m. 10.0 ppb (10) 2.4 ppb (3) N/A 8.0 ppb (8) N/A N/A 28.0 ppb (26) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 19, 2021, 6 p.m. 16.3 ppb (16) 5.1 ppb (5) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 19, 2021, 5 p.m. 25.0 ppb (24) 9.4 ppb (9) N/A 16.0 ppb (16) N/A N/A 16.0 ppb (15) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 19, 2021, 4 p.m. 46.4 ppb (44) 23.1 ppb (22) N/A 23.0 ppb (22) N/A N/A 8.0 ppb (8) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 19, 2021, 3 p.m. 53.8 ppb (51) 30.1 ppb (29) N/A 24.0 ppb (23) N/A N/A 3.0 ppb (3) N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 19, 2021, 2 p.m. 66.9 ppb (65) 38.8 ppb (37) N/A 28.0 ppb (27) N/A N/A 1.0 ppb (1) N/A N/A 13.0 μg/m3 (53) 65.0
 
Feb. 19, 2021, 1 p.m. 59.3 ppb (57) 32.4 ppb (31) N/A 27.0 ppb (26) N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (38) 57.0
 
Feb. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 19, 2021, 11 a.m. 30.1 ppb (29) 5.9 ppb (6) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2021, 10 a.m. 27.1 ppb (26) 3.9 ppb (4) N/A 23.0 ppb (22) N/A N/A 4.0 ppb (4) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 19, 2021, 9 a.m. 21.6 ppb (21) 1.9 ppb (2) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (5) N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 19, 2021, 8 a.m. 37.9 ppb (36) 11.1 ppb (11) N/A 27.0 ppb (26) N/A N/A 4.0 ppb (4) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 19, 2021, 7 a.m. 22.2 ppb (21) 1.6 ppb (2) N/A 21.0 ppb (20) N/A N/A 5.0 ppb (5) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 19, 2021, 6 a.m. 38.4 ppb (37) 9.6 ppb (10) N/A 29.0 ppb (28) N/A N/A 2.0 ppb (2) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2021, 5 a.m. 37.3 ppb (36) 6.6 ppb (7) N/A 31.0 ppb (30) N/A N/A 3.0 ppb (3) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 19, 2021, 4 a.m. 29.4 ppb (28) 2.5 ppb (3) N/A 27.0 ppb (26) N/A N/A 6.0 ppb (6) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 19, 2021, 3 a.m. 22.6 ppb (22) 0.7 ppb (1) N/A 22.0 ppb (21) N/A N/A 15.0 ppb (14) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 19, 2021, 2 a.m. 13.1 ppb (13) 0.0 ppb (0) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 19, 2021, 1 a.m. 3.6 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
Feb. 19, 2021, midnight 2.4 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
Feb. 18, 2021, 11 p.m. 3.5 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
Feb. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.0 μg/m3 (13) 36.0
 
Feb. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
Feb. 18, 2021, 8 p.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
Feb. 18, 2021, 7 p.m. 3.6 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 18, 2021, 4 p.m. N/A 8.2 ppb (8) N/A 12.0 ppb (12) N/A N/A 12.0 ppb (12) N/A N/A 18.0 μg/m3 (64) 64.0
 
Feb. 18, 2021, 3 p.m. 56.8 ppb (54) 35.1 ppb (34) N/A 22.0 ppb (21) N/A N/A 3.0 ppb (3) N/A N/A 13.0 μg/m3 (53) 54.0
 
Feb. 18, 2021, 2 p.m. 63.9 ppb (62) 40.0 ppb (38) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) N/A N/A 14.0 μg/m3 (55) 62.0
 
Feb. 18, 2021, 1 p.m. 63.4 ppb (62) 39.3 ppb (38) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 62.0
 
Feb. 18, 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
 
Feb. 18, 2021, 11 a.m. 44.6 ppb (43) 19.8 ppb (19) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 18, 2021, 10 a.m. 37.6 ppb (36) 12.8 ppb (13) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (34) 36.0
 
Feb. 18, 2021, 9 a.m. 25.0 ppb (24) 4.3 ppb (5) N/A 21.0 ppb (20) N/A N/A 3.0 ppb (3) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 18, 2021, 8 a.m. 20.0 ppb (19) 2.7 ppb (3) N/A 17.0 ppb (17) N/A N/A 3.0 ppb (3) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 18, 2021, 7 a.m. 20.6 ppb (20) 2.2 ppb (3) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 18, 2021, 6 a.m. 24.0 ppb (23) 6.9 ppb (7) N/A 17.0 ppb (17) N/A N/A 10.0 ppb (10) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 18, 2021, 5 a.m. 19.8 ppb (19) 1.9 ppb (2) N/A 18.0 ppb (17) N/A N/A 11.0 ppb (11) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 18, 2021, 4 a.m. 12.3 ppb (12) 1.9 ppb (2) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 18, 2021, 3 a.m. 9.0 ppb (9) -0.1 ppb (0) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 18, 2021, 2 a.m. 7.8 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 18, 2021, 1 a.m. 3.6 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 18, 2021, midnight 1.6 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
Feb. 17, 2021, 11 p.m. 1.3 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0