ID: 248

AQSQID: 061130004

Site Name: Davis - Ucd Campus

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

Updated: June 20, 2021, 9:52 p.m.

Location: Davis (Campbell Rd), CA

Reporting: True, Located: True

Current AQI: 44.0

Davis (Campbell Rd) CA, US: 38.53455, -121.7734

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 20, 2021, 8 p.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (44) N/A N/A 0.9 μg/m3 (4) 44.0
 
June 20, 2021, 7 p.m. 3.1 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 5.1 μg/m3 (22) 40.0
 
June 20, 2021, 6 p.m. 3.1 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 8.8 μg/m3 (37) 37.0
 
June 20, 2021, 5 p.m. 3.3 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 11.2 μg/m3 (47) 47.0
 
June 20, 2021, 4 p.m. 4.8 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 12.3 μg/m3 (52) 52.0
 
June 20, 2021, 3 p.m. 5.4 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A 12.0 μg/m3 (50) 50.0
 
June 20, 2021, 2 p.m. 4.5 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (17) N/A N/A 10.2 μg/m3 (43) 43.0
 
June 20, 2021, 1 p.m. 4.8 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (14) N/A N/A 8.5 μg/m3 (36) 36.0
 
June 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
June 20, 2021, 11 a.m. 3.5 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (20) N/A N/A 6.7 μg/m3 (28) 28.0
 
June 20, 2021, 10 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) N/A N/A 8.7 μg/m3 (37) 37.0
 
June 20, 2021, 9 a.m. 4.6 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A 9.3 μg/m3 (39) 39.0
 
June 20, 2021, 8 a.m. 5.5 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A 11.2 μg/m3 (47) 47.0
 
June 20, 2021, 7 a.m. 3.8 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A N/A 10.9 μg/m3 (46) 46.0
 
June 20, 2021, 6 a.m. 5.6 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 11.4 μg/m3 (48) 48.0
 
June 20, 2021, 5 a.m. 6.4 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A N/A 14.1 μg/m3 (56) 56.0
 
June 20, 2021, 4 a.m. 6.8 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) N/A N/A 12.0 μg/m3 (50) 50.0
 
June 20, 2021, 3 a.m. 5.0 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 10.3 μg/m3 (43) 43.0
 
June 20, 2021, 2 a.m. 3.9 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 12.9 μg/m3 (53) 53.0
 
June 20, 2021, 1 a.m. 3.7 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 6.4 μg/m3 (27) 39.0
 
June 20, 2021, midnight 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) N/A N/A 3.5 μg/m3 (15) 48.0
 
June 19, 2021, 11 p.m. 2.9 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) N/A N/A 1.2 μg/m3 (5) 48.0
 
June 19, 2021, 10 p.m. 2.7 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (49) N/A N/A 4.1 μg/m3 (18) 49.0
 
June 19, 2021, 9 p.m. 2.7 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (51) N/A N/A 6.7 μg/m3 (28) 51.0
 
June 19, 2021, 8 p.m. 2.7 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 3.3 μg/m3 (14) 50.0
 
June 19, 2021, 7 p.m. 3.0 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (50) N/A N/A 4.5 μg/m3 (19) 50.0
 
June 19, 2021, 6 p.m. 3.5 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) N/A N/A 7.1 μg/m3 (30) 48.0
 
June 19, 2021, 5 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 11.7 μg/m3 (49) 49.0
 
June 19, 2021, 4 p.m. 4.6 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 9.1 μg/m3 (38) 38.0
 
June 19, 2021, 3 p.m. 5.9 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 9.6 μg/m3 (40) 40.0
 
June 19, 2021, 2 p.m. 7.4 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 10.2 μg/m3 (43) 43.0
 
June 19, 2021, 1 p.m. 7.3 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (12) N/A N/A 9.9 μg/m3 (42) 42.0
 
June 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (54) 54.0
 
June 19, 2021, 11 a.m. 4.4 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 19, 2021, 10 a.m. 3.7 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 10.5 μg/m3 (44) 44.0
 
June 19, 2021, 9 a.m. 3.7 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 9.4 μg/m3 (40) 40.0
 
June 19, 2021, 8 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 13.5 μg/m3 (54) 54.0
 
June 19, 2021, 7 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 8.2 μg/m3 (35) 35.0
 
June 19, 2021, 6 a.m. 6.3 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 10.9 μg/m3 (46) 46.0
 
June 19, 2021, 5 a.m. 5.2 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A N/A 13.2 μg/m3 (54) 54.0
 
June 19, 2021, 4 a.m. 5.1 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 14.1 μg/m3 (56) 56.0
 
June 19, 2021, 3 a.m. 5.3 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 19, 2021, 2 a.m. 5.4 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 46.0 ppb (43) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 19, 2021, 1 a.m. 4.3 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (65) N/A N/A 5.6 μg/m3 (24) 65.0
 
June 19, 2021, midnight 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 72.0 ppb (102) N/A N/A 8.5 μg/m3 (36) 102.0
 
June 18, 2021, 11 p.m. 2.8 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 71.0 ppb (101) N/A N/A 5.1 μg/m3 (22) 101.0
 
June 18, 2021, 10 p.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 70.0 ppb (100) N/A N/A 6.8 μg/m3 (29) 100.0
 
June 18, 2021, 9 p.m. 2.8 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 69.0 ppb (97) N/A N/A 3.0 μg/m3 (13) 97.0
 
June 18, 2021, 8 p.m. 3.0 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 66.0 ppb (87) N/A N/A 5.0 μg/m3 (21) 87.0
 
June 18, 2021, 7 p.m. 4.1 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 65.0 ppb (84) N/A N/A 7.9 μg/m3 (33) 84.0
 
June 18, 2021, 6 p.m. 4.5 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (65) N/A N/A 10.2 μg/m3 (43) 65.0
 
June 18, 2021, 5 p.m. 7.4 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 51.0 ppb (48) N/A N/A 12.2 μg/m3 (52) 52.0
 
June 18, 2021, 4 p.m. 8.2 ppb (8) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) N/A N/A 17.3 μg/m3 (62) 62.0
 
June 18, 2021, 3 p.m. 9.8 ppb (10) 2.8 ppb (3) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) N/A N/A 9.9 μg/m3 (42) 42.0
 
June 18, 2021, 2 p.m. 15.9 ppb (15) 5.9 ppb (6) N/A 10.0 ppb (10) N/A N/A 10.0 ppb (10) N/A N/A 13.1 μg/m3 (54) 54.0
 
June 18, 2021, 1 p.m. 16.2 ppb (16) 4.8 ppb (5) N/A 11.0 ppb (11) N/A N/A 5.0 ppb (5) N/A N/A 12.6 μg/m3 (53) 53.0
 
June 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
June 18, 2021, 11 a.m. 11.0 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 6.0 ppb (6) N/A N/A 8.2 μg/m3 (35) 35.0
 
June 18, 2021, 10 a.m. 10.5 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A 9.0 ppb (9) N/A N/A 9.1 μg/m3 (38) 38.0
 
June 18, 2021, 9 a.m. 11.4 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 11.0 ppb (11) N/A N/A 7.3 μg/m3 (31) 31.0
 
June 18, 2021, 8 a.m. 14.0 ppb (14) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A 8.0 ppb (8) N/A N/A 9.4 μg/m3 (40) 40.0
 
June 18, 2021, 7 a.m. 19.9 ppb (19) 1.8 ppb (2) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (5) N/A N/A 6.5 μg/m3 (28) 28.0
 
June 18, 2021, 6 a.m. 19.6 ppb (19) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (6) N/A N/A 3.8 μg/m3 (16) 19.0
 
June 18, 2021, 5 a.m. 14.3 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 14.0 ppb (13) N/A N/A 6.1 μg/m3 (26) 26.0
 
June 18, 2021, 4 a.m. 10.8 ppb (11) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) N/A N/A 7.4 μg/m3 (31) 31.0
 
June 18, 2021, 3 a.m. 10.9 ppb (11) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) N/A N/A 12.3 μg/m3 (52) 52.0
 
June 18, 2021, 2 a.m. 5.1 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 56.0 ppb (55) N/A N/A 12.2 μg/m3 (52) 55.0
 
June 18, 2021, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 71.0 ppb (101) N/A N/A 2.4 μg/m3 (10) 101.0
 
June 18, 2021, midnight 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (71) N/A N/A -0.4 μg/m3 (0) 71.0
 
June 17, 2021, 11 p.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A -0.4 μg/m3 (0) 58.0
 
June 17, 2021, 10 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (51) N/A N/A 1.9 μg/m3 (8) 51.0
 
June 17, 2021, 9 p.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (49) N/A N/A 3.8 μg/m3 (16) 49.0
 
June 17, 2021, 8 p.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) N/A N/A 3.6 μg/m3 (16) 48.0
 
June 17, 2021, 7 p.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A N/A 5.8 μg/m3 (25) 45.0
 
June 17, 2021, 6 p.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A N/A 6.5 μg/m3 (28) 42.0
 
June 17, 2021, 5 p.m. 2.6 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 4.4 μg/m3 (19) 39.0
 
June 17, 2021, 4 p.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 2.5 μg/m3 (11) 34.0
 
June 17, 2021, 3 p.m. 4.7 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 3.0 μg/m3 (13) 31.0
 
June 17, 2021, 2 p.m. 6.9 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
June 17, 2021, 1 p.m. 6.6 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) N/A N/A 3.9 μg/m3 (17) 25.0
 
June 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
June 17, 2021, 11 a.m. 10.9 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 8.0 ppb (8) N/A N/A 3.5 μg/m3 (15) 15.0
 
June 17, 2021, 10 a.m. 10.0 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 7.0 ppb (7) N/A N/A 6.7 μg/m3 (28) 28.0
 
June 17, 2021, 9 a.m. 14.6 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A 6.0 ppb (6) N/A N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 8 a.m. 8.7 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) N/A N/A 4.2 μg/m3 (18) 18.0
 
June 17, 2021, 7 a.m. 7.2 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) N/A N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 6 a.m. 7.3 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) N/A N/A 4.1 μg/m3 (18) 19.0
 
June 17, 2021, 5 a.m. 7.1 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) N/A N/A 7.9 μg/m3 (33) 33.0
 
June 17, 2021, 4 a.m. 6.8 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) N/A N/A 8.5 μg/m3 (36) 36.0
 
June 17, 2021, 3 a.m. 3.7 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
June 17, 2021, 2 a.m. 2.1 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 2.9 μg/m3 (13) 50.0
 
June 17, 2021, 1 a.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (51) N/A N/A 2.5 μg/m3 (11) 51.0
 
June 17, 2021, midnight 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) N/A N/A 3.6 μg/m3 (16) 50.0
 
June 16, 2021, 11 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 2.7 μg/m3 (12) 50.0
 
June 16, 2021, 10 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (49) N/A N/A 1.6 μg/m3 (7) 49.0
 
June 16, 2021, 9 p.m. 1.8 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 4.1 μg/m3 (18) 47.0
 
June 16, 2021, 8 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 2.4 μg/m3 (10) 44.0
 
June 16, 2021, 7 p.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A 1.5 μg/m3 (7) 41.0
 
June 16, 2021, 6 p.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 1.3 μg/m3 (6) 38.0
 
June 16, 2021, 5 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 1.5 μg/m3 (7) 35.0
 
June 16, 2021, 4 p.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
June 16, 2021, 3 p.m. 3.6 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 5.6 μg/m3 (24) 27.0
 
June 16, 2021, 2 p.m. 9.3 ppb (9) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) N/A N/A 5.1 μg/m3 (22) 22.0
 
June 16, 2021, 1 p.m. 17.1 ppb (17) 5.6 ppb (6) N/A 12.0 ppb (12) N/A N/A 6.0 ppb (6) N/A N/A 1.9 μg/m3 (8) 17.0
 
June 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (11) 11.0
 
June 16, 2021, 11 a.m. 7.8 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) N/A N/A 4.1 μg/m3 (18) 18.0
 
June 16, 2021, 10 a.m. 5.4 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) N/A N/A 4.1 μg/m3 (18) 18.0
 
June 16, 2021, 9 a.m. 8.2 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) N/A N/A 6.7 μg/m3 (28) 28.0
 
June 16, 2021, 8 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (17) N/A N/A 9.0 μg/m3 (38) 38.0
 
June 16, 2021, 7 a.m. 4.4 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) N/A N/A 10.8 μg/m3 (46) 46.0
 
June 16, 2021, 6 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 12.3 μg/m3 (52) 52.0
 
June 16, 2021, 5 a.m. 4.5 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 16.7 μg/m3 (61) 61.0
 
June 16, 2021, 4 a.m. 3.9 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 11.1 μg/m3 (47) 47.0
 
June 16, 2021, 3 a.m. 3.0 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
June 16, 2021, 2 a.m. 2.0 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 1.3 μg/m3 (6) 40.0
 
June 16, 2021, 1 a.m. 1.7 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A -0.8 μg/m3 (0) 41.0
 
June 16, 2021, midnight 1.6 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A -1.7 μg/m3 (0) 40.0
 
June 15, 2021, 11 p.m. 1.5 ppb (2) -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A -0.4 μg/m3 (0) 41.0
 
June 15, 2021, 10 p.m. 1.5 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 1.8 μg/m3 (8) 39.0
 
June 15, 2021, 9 p.m. 1.6 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 0.1 μg/m3 (1) 38.0
 
June 15, 2021, 8 p.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A -2.5 μg/m3 (0) 37.0
 
June 15, 2021, 7 p.m. 2.0 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 0.1 μg/m3 (1) 36.0
 
June 15, 2021, 6 p.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 2.5 μg/m3 (11) 33.0
 
June 15, 2021, 5 p.m. 3.0 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
June 15, 2021, 4 p.m. 7.3 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A -0.2 μg/m3 (0) 23.0
 
June 15, 2021, 3 p.m. 8.3 ppb (8) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (17) N/A N/A 0.3 μg/m3 (2) 17.0
 
June 15, 2021, 2 p.m. 9.2 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (13) N/A N/A 4.4 μg/m3 (19) 19.0
 
June 15, 2021, 1 p.m. 17.7 ppb (17) 5.1 ppb (5) N/A 13.0 ppb (13) N/A N/A 6.0 ppb (6) N/A N/A 5.6 μg/m3 (24) 24.0
 
June 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
June 15, 2021, 11 a.m. 5.9 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (11) N/A N/A 1.8 μg/m3 (8) 11.0
 
June 15, 2021, 10 a.m. 5.6 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (12) N/A N/A 1.2 μg/m3 (5) 12.0
 
June 15, 2021, 9 a.m. 6.3 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (12) N/A N/A 3.2 μg/m3 (14) 14.0
 
June 15, 2021, 8 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (14) N/A N/A 2.9 μg/m3 (13) 14.0
 
June 15, 2021, 7 a.m. 6.5 ppb (7) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 1.8 μg/m3 (8) 14.0
 
June 15, 2021, 6 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 2.1 μg/m3 (9) 16.0
 
June 15, 2021, 5 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (18) N/A N/A 3.5 μg/m3 (15) 18.0
 
June 15, 2021, 4 a.m. 4.7 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A 2.9 μg/m3 (13) 22.0
 
June 15, 2021, 3 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
June 15, 2021, 2 a.m. 2.4 ppb (3) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
June 15, 2021, 1 a.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 0.4 μg/m3 (2) 36.0
 
June 15, 2021, midnight 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A -0.5 μg/m3 (0) 38.0
 
June 14, 2021, 11 p.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
June 14, 2021, 10 p.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
June 14, 2021, 9 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
June 14, 2021, 8 p.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A N/A 0.4 μg/m3 (2) 29.0
 
June 14, 2021, 7 p.m. 3.2 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A 0.4 μg/m3 (2) 27.0
 
June 14, 2021, 6 p.m. 3.6 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
June 14, 2021, 5 p.m. 3.3 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 3.3 μg/m3 (14) 23.0
 
June 14, 2021, 4 p.m. 2.8 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A N/A 2.7 μg/m3 (12) 20.0
 
June 14, 2021, 3 p.m. 3.1 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (17) N/A N/A -2.9 μg/m3 (0) 17.0
 
June 14, 2021, 2 p.m. 4.8 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A N/A -2.5 μg/m3 (0) 13.0
 
June 14, 2021, 1 p.m. 6.5 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 10.0 ppb (10) N/A N/A -0.5 μg/m3 (0) 10.0
 
June 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.9 μg/m3 (0) 0.0
June 14, 2021, 11 a.m. 4.8 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 9.0 ppb (9) N/A N/A -2.0 μg/m3 (0) 9.0
 
June 14, 2021, 10 a.m. 3.3 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 10.0 ppb (10) N/A N/A -2.2 μg/m3 (0) 10.0
 
June 14, 2021, 9 a.m. 2.5 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 11.0 ppb (11) N/A N/A 1.9 μg/m3 (8) 11.0
 
June 14, 2021, 8 a.m. 3.0 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 11.0 ppb (11) N/A N/A 7.1 μg/m3 (30) 30.0
 
June 14, 2021, 7 a.m. 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 10.0 ppb (10) N/A N/A -2.8 μg/m3 (0) 10.0
 
June 14, 2021, 6 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) N/A N/A N/A 12.0
 
June 14, 2021, 5 a.m. 1.9 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) N/A N/A 3.0 μg/m3 (13) 13.0
 
June 14, 2021, 4 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A N/A 4.4 μg/m3 (19) 19.0
 
June 14, 2021, 3 a.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A N/A 0.6 μg/m3 (3) 12.0
 
June 14, 2021, 2 a.m. 1.6 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) N/A N/A 0.4 μg/m3 (2) 16.0
 
June 14, 2021, 1 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A N/A 0.6 μg/m3 (3) 19.0
 
June 14, 2021, midnight 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A N/A -2.0 μg/m3 (0) 21.0
 
June 13, 2021, 11 p.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
June 13, 2021, 10 p.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A N/A -2.9 μg/m3 (0) 20.0
 
June 13, 2021, 9 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0