ID: 1266

AQSQID: 490110004

Site Name: Bv

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

Updated: March 6, 2021, 10:32 a.m.

Location: Bountiful (Wayne Cooper), UT

Reporting: True, Located: True

Current AQI: 22.0

Bountiful (Wayne Cooper) UT, US: 40.897999, -111.885498

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 9 a.m. 12.1 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) N/A N/A 2.2 μg/m3 (10) 22.0
 
March 6, 2021, 8 a.m. 12.8 ppb (13) 0.4 ppb (1) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
March 6, 2021, 7 a.m. 16.2 ppb (16) 0.4 ppb (1) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) N/A N/A 2.4 μg/m3 (10) 18.0
 
March 6, 2021, 6 a.m. 23.6 ppb (23) 0.7 ppb (1) N/A 23.0 ppb (22) N/A N/A 15.0 ppb (14) N/A N/A 5.6 μg/m3 (24) 24.0
 
March 6, 2021, 5 a.m. 24.1 ppb (23) 0.8 ppb (1) N/A 24.0 ppb (23) N/A N/A 16.0 ppb (15) N/A N/A 6.5 μg/m3 (28) 28.0
 
March 6, 2021, 4 a.m. 15.7 ppb (15) 0.3 ppb (1) N/A 16.0 ppb (16) N/A N/A 26.0 ppb (25) N/A N/A 4.5 μg/m3 (19) 25.0
 
March 6, 2021, 3 a.m. 14.5 ppb (14) 0.3 ppb (1) N/A 14.0 ppb (14) N/A N/A 31.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
March 6, 2021, 2 a.m. 17.9 ppb (17) 0.5 ppb (1) N/A 18.0 ppb (17) N/A N/A 30.0 ppb (28) N/A N/A 5.9 μg/m3 (25) 28.0
 
March 6, 2021, 1 a.m. 16.0 ppb (16) 0.4 ppb (1) N/A 16.0 ppb (16) N/A N/A 35.0 ppb (33) N/A N/A 11.5 μg/m3 (48) 48.0
 
March 6, 2021, midnight 8.4 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 47.0 ppb (44) N/A N/A 7.4 μg/m3 (31) 44.0
 
March 5, 2021, 11 p.m. 7.8 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 49.0 ppb (46) N/A N/A 7.7 μg/m3 (33) 46.0
 
March 5, 2021, 10 p.m. 9.4 ppb (9) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A 47.0 ppb (44) N/A N/A 8.6 μg/m3 (36) 44.0
 
March 5, 2021, 9 p.m. 11.7 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A 45.0 ppb (42) N/A N/A 8.7 μg/m3 (37) 42.0
 
March 5, 2021, 8 p.m. 11.4 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A 43.0 ppb (40) N/A N/A 8.1 μg/m3 (34) 40.0
 
March 5, 2021, 7 p.m. 11.2 ppb (11) 3.1 ppb (3) N/A 8.0 ppb (8) N/A N/A 42.0 ppb (39) N/A N/A 8.1 μg/m3 (34) 39.0
 
March 5, 2021, 6 p.m. 13.8 ppb (14) 3.9 ppb (4) N/A 10.0 ppb (10) N/A N/A 41.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
March 5, 2021, 5 p.m. 26.9 ppb (26) 9.4 ppb (9) N/A 18.0 ppb (17) N/A N/A 32.0 ppb (30) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 5, 2021, 4 p.m. 19.6 ppb (19) 6.0 ppb (6) N/A 14.0 ppb (14) N/A N/A 33.0 ppb (31) N/A N/A 9.1 μg/m3 (38) 38.0
 
March 5, 2021, 3 p.m. 32.0 ppb (31) 10.0 ppb (10) N/A 22.0 ppb (21) N/A N/A 20.0 ppb (19) N/A N/A 7.6 μg/m3 (32) 32.0
 
March 5, 2021, 2 p.m. 43.7 ppb (42) 11.8 ppb (12) N/A 32.0 ppb (31) N/A N/A 8.0 ppb (8) N/A N/A 6.7 μg/m3 (28) 42.0
 
March 5, 2021, 1 p.m. 39.1 ppb (37) 7.0 ppb (7) N/A 32.0 ppb (31) N/A N/A 7.0 ppb (7) N/A N/A 6.5 μg/m3 (28) 37.0
 
March 5, 2021, noon 22.5 ppb (22) 0.6 ppb (1) N/A 22.0 ppb (21) N/A N/A 14.0 ppb (13) N/A N/A 5.3 μg/m3 (23) 23.0
 
March 5, 2021, 11 a.m. 20.6 ppb (20) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 3.6 μg/m3 (16) 20.0
 
March 5, 2021, 10 a.m. 16.9 ppb (16) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 19.0 ppb (18) N/A N/A 3.7 μg/m3 (16) 18.0
 
March 5, 2021, 9 a.m. 17.0 ppb (17) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 19.0 ppb (18) N/A N/A 3.6 μg/m3 (16) 18.0
 
March 5, 2021, 8 a.m. 12.8 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) N/A N/A 4.5 μg/m3 (19) 23.0
 
March 5, 2021, 7 a.m. 14.2 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 24.0 ppb (23) N/A N/A 6.1 μg/m3 (26) 26.0
 
March 5, 2021, 6 a.m. 10.6 ppb (10) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 3.7 μg/m3 (16) 28.0
 
March 5, 2021, 5 a.m. 10.7 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 4.9 μg/m3 (21) 28.0
 
March 5, 2021, 4 a.m. 9.6 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 33.0 ppb (31) N/A N/A 5.5 μg/m3 (23) 31.0
 
March 5, 2021, 3 a.m. 7.7 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 38.0 ppb (36) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 5, 2021, 2 a.m. 10.2 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 33.0 ppb (31) N/A N/A 8.5 μg/m3 (36) 36.0
 
March 5, 2021, 1 a.m. 10.7 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
March 5, 2021, midnight 4.6 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 7.4 μg/m3 (31) 42.0
 
March 4, 2021, 11 p.m. 4.4 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 8.9 μg/m3 (38) 42.0
 
March 4, 2021, 10 p.m. 5.9 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) N/A N/A 7.7 μg/m3 (33) 41.0
 
March 4, 2021, 9 p.m. 7.7 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) N/A N/A 7.9 μg/m3 (33) 38.0
 
March 4, 2021, 8 p.m. 7.9 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
March 4, 2021, 7 p.m. 10.6 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) N/A N/A 6.1 μg/m3 (26) 34.0
 
March 4, 2021, 6 p.m. 12.6 ppb (12) 3.7 ppb (4) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) N/A N/A 5.2 μg/m3 (22) 32.0
 
March 4, 2021, 5 p.m. 16.3 ppb (16) 4.5 ppb (5) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) N/A N/A 5.4 μg/m3 (23) 29.0
 
March 4, 2021, 4 p.m. 34.7 ppb (33) 12.0 ppb (12) N/A 23.0 ppb (22) N/A N/A 20.0 ppb (19) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 4, 2021, 3 p.m. 43.5 ppb (42) 15.3 ppb (15) N/A 29.0 ppb (28) N/A N/A 11.0 ppb (11) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 4, 2021, 2 p.m. 37.8 ppb (36) 6.9 ppb (7) N/A 31.0 ppb (30) N/A N/A 8.0 ppb (8) N/A N/A 9.3 μg/m3 (39) 39.0
 
March 4, 2021, 1 p.m. 26.7 ppb (26) 2.4 ppb (3) N/A 25.0 ppb (24) N/A N/A 14.0 ppb (13) N/A N/A 7.7 μg/m3 (33) 33.0
 
March 4, 2021, noon 18.4 ppb (18) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 18.0 ppb (17) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 4, 2021, 11 a.m. 17.0 ppb (17) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 22.0 ppb (21) N/A N/A 5.6 μg/m3 (24) 24.0
 
March 4, 2021, 10 a.m. 15.5 ppb (15) 0.3 ppb (1) N/A 16.0 ppb (16) N/A N/A 23.0 ppb (22) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 4, 2021, 9 a.m. 17.9 ppb (17) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (20) N/A N/A 8.5 μg/m3 (36) 36.0
 
March 4, 2021, 8 a.m. 14.6 ppb (14) 0.4 ppb (1) N/A 15.0 ppb (15) N/A N/A 24.0 ppb (23) N/A N/A 8.4 μg/m3 (36) 36.0
 
March 4, 2021, 7 a.m. 14.1 ppb (14) 0.3 ppb (1) N/A 14.0 ppb (14) N/A N/A 26.0 ppb (25) N/A N/A 9.2 μg/m3 (39) 39.0
 
March 4, 2021, 6 a.m. 15.5 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A 32.0 ppb (30) N/A N/A 6.2 μg/m3 (26) 30.0
 
March 4, 2021, 5 a.m. 18.8 ppb (18) 0.7 ppb (1) N/A 19.0 ppb (18) N/A N/A 29.0 ppb (27) N/A N/A 6.1 μg/m3 (26) 27.0
 
March 4, 2021, 4 a.m. 25.7 ppb (25) 0.7 ppb (1) N/A 25.0 ppb (24) N/A N/A 20.0 ppb (19) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 4, 2021, 3 a.m. 18.5 ppb (18) 0.5 ppb (1) N/A 18.0 ppb (17) N/A N/A 28.0 ppb (26) N/A N/A 6.5 μg/m3 (28) 28.0
 
March 4, 2021, 2 a.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A N/A 1.7 μg/m3 (8) 42.0
 
March 4, 2021, 1 a.m. 4.6 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 1.9 μg/m3 (8) 42.0
 
March 4, 2021, midnight 8.3 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 42.0 ppb (39) N/A N/A 3.3 μg/m3 (14) 39.0
 
March 3, 2021, 11 p.m. 10.2 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A 41.0 ppb (38) N/A N/A 3.2 μg/m3 (14) 38.0
 
March 3, 2021, 10 p.m. 11.5 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (9) N/A N/A 41.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
March 3, 2021, 9 p.m. 14.9 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A 38.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
March 3, 2021, 8 p.m. 14.7 ppb (14) 4.5 ppb (5) N/A 10.0 ppb (10) N/A N/A 37.0 ppb (35) N/A N/A 5.9 μg/m3 (25) 35.0
 
March 3, 2021, 7 p.m. 18.2 ppb (18) 6.5 ppb (7) N/A 12.0 ppb (12) N/A N/A 33.0 ppb (31) N/A N/A 7.2 μg/m3 (31) 31.0
 
March 3, 2021, 6 p.m. 21.7 ppb (21) 8.1 ppb (8) N/A 14.0 ppb (14) N/A N/A 31.0 ppb (29) N/A N/A 7.2 μg/m3 (31) 31.0
 
March 3, 2021, 5 p.m. 35.9 ppb (34) 15.5 ppb (15) N/A 21.0 ppb (20) N/A N/A 23.0 ppb (22) N/A N/A 10.1 μg/m3 (43) 43.0
 
March 3, 2021, 4 p.m. 83.9 ppb (83) 51.5 ppb (49) N/A 32.0 ppb (31) N/A N/A 10.0 ppb (10) N/A N/A 13.2 μg/m3 (54) 83.0
 
March 3, 2021, 3 p.m. 74.9 ppb (74) 42.5 ppb (41) N/A 32.0 ppb (31) N/A N/A 8.0 ppb (8) N/A N/A 10.4 μg/m3 (44) 74.0
 
March 3, 2021, 2 p.m. 50.1 ppb (48) 17.9 ppb (17) N/A 32.0 ppb (31) N/A N/A 4.0 ppb (4) N/A N/A 5.9 μg/m3 (25) 48.0
 
March 3, 2021, 1 p.m. 44.1 ppb (42) 10.2 ppb (10) N/A 34.0 ppb (33) N/A N/A 2.0 ppb (2) N/A N/A 5.4 μg/m3 (23) 42.0
 
March 3, 2021, noon 29.4 ppb (28) 2.5 ppb (3) N/A 27.0 ppb (26) N/A N/A 7.0 ppb (7) N/A N/A 4.4 μg/m3 (19) 28.0
 
March 3, 2021, 11 a.m. 21.3 ppb (21) 0.6 ppb (1) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) N/A N/A 4.3 μg/m3 (18) 21.0
 
March 3, 2021, 10 a.m. 20.7 ppb (20) 0.5 ppb (1) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 3, 2021, 9 a.m. 25.5 ppb (25) 0.9 ppb (1) N/A 25.0 ppb (24) N/A N/A 9.0 ppb (9) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 3, 2021, 8 a.m. 29.2 ppb (28) 1.6 ppb (2) N/A 28.0 ppb (27) N/A N/A 6.0 ppb (6) N/A N/A 7.2 μg/m3 (31) 31.0
 
March 3, 2021, 7 a.m. 22.8 ppb (22) 0.6 ppb (1) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) N/A N/A 7.7 μg/m3 (33) 33.0
 
March 3, 2021, 6 a.m. 18.5 ppb (18) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (15) N/A N/A 5.3 μg/m3 (23) 23.0
 
March 3, 2021, 5 a.m. 22.0 ppb (21) 0.4 ppb (1) N/A 22.0 ppb (21) N/A N/A 15.0 ppb (14) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 3, 2021, 4 a.m. 25.3 ppb (24) 0.7 ppb (1) N/A 25.0 ppb (24) N/A N/A 15.0 ppb (14) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 3, 2021, 3 a.m. 30.8 ppb (30) 1.1 ppb (2) N/A 30.0 ppb (29) N/A N/A 13.0 ppb (13) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 2 a.m. 27.9 ppb (27) 1.4 ppb (2) N/A 27.0 ppb (26) N/A N/A 17.0 ppb (16) N/A N/A 8.0 μg/m3 (34) 34.0
 
March 3, 2021, 1 a.m. 17.9 ppb (17) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 27.0 ppb (25) N/A N/A 5.7 μg/m3 (24) 25.0
 
March 3, 2021, midnight 12.7 ppb (12) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 37.0 ppb (35) N/A N/A 5.7 μg/m3 (24) 35.0
 
March 2, 2021, 11 p.m. 17.9 ppb (17) 3.9 ppb (4) N/A 14.0 ppb (14) N/A N/A 36.0 ppb (34) N/A N/A 7.3 μg/m3 (31) 34.0
 
March 2, 2021, 10 p.m. 19.2 ppb (19) 5.2 ppb (5) N/A 14.0 ppb (14) N/A N/A 36.0 ppb (34) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 2, 2021, 9 p.m. 22.8 ppb (22) 7.6 ppb (8) N/A 16.0 ppb (16) N/A N/A 34.0 ppb (32) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 2, 2021, 8 p.m. 24.2 ppb (23) 8.6 ppb (9) N/A 16.0 ppb (16) N/A N/A 32.0 ppb (30) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 2, 2021, 7 p.m. 28.3 ppb (27) 10.8 ppb (11) N/A 18.0 ppb (17) N/A N/A 29.0 ppb (27) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 2, 2021, 6 p.m. 39.1 ppb (37) 17.2 ppb (17) N/A 22.0 ppb (21) N/A N/A 24.0 ppb (23) N/A N/A 11.8 μg/m3 (50) 50.0
 
March 2, 2021, 5 p.m. 36.2 ppb (35) 16.8 ppb (16) N/A 20.0 ppb (19) N/A N/A 24.0 ppb (23) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 2, 2021, 4 p.m. 37.8 ppb (36) 16.8 ppb (16) N/A 21.0 ppb (20) N/A N/A 22.0 ppb (21) N/A N/A 12.6 μg/m3 (53) 53.0
 
March 2, 2021, 3 p.m. 88.9 ppb (89) 52.3 ppb (50) N/A 37.0 ppb (35) N/A N/A 7.0 ppb (7) N/A N/A 13.8 μg/m3 (55) 89.0
 
March 2, 2021, 2 p.m. 53.7 ppb (51) 20.6 ppb (20) N/A 33.0 ppb (32) N/A N/A 4.0 ppb (4) N/A N/A 8.9 μg/m3 (38) 51.0
 
March 2, 2021, 1 p.m. 41.9 ppb (40) 8.0 ppb (8) N/A 34.0 ppb (33) N/A N/A 2.0 ppb (2) N/A N/A 8.5 μg/m3 (36) 40.0
 
March 2, 2021, noon 41.8 ppb (40) 6.8 ppb (7) N/A 35.0 ppb (34) N/A N/A 1.0 ppb (1) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 2, 2021, 11 a.m. 38.4 ppb (37) 6.2 ppb (6) N/A 32.0 ppb (31) N/A N/A 3.0 ppb (3) N/A N/A 9.9 μg/m3 (42) 42.0
 
March 2, 2021, 10 a.m. 28.4 ppb (27) 1.4 ppb (2) N/A 27.0 ppb (26) N/A N/A 6.0 ppb (6) N/A N/A 9.8 μg/m3 (41) 41.0
 
March 2, 2021, 9 a.m. 29.4 ppb (28) 1.5 ppb (2) N/A 28.0 ppb (27) N/A N/A 4.0 ppb (4) N/A N/A 9.7 μg/m3 (41) 41.0
 
March 2, 2021, 8 a.m. 27.6 ppb (27) 1.1 ppb (2) N/A 27.0 ppb (26) N/A N/A 6.0 ppb (6) N/A N/A 9.3 μg/m3 (39) 39.0
 
March 2, 2021, 7 a.m. 19.2 ppb (19) 0.5 ppb (1) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (15) N/A N/A 5.6 μg/m3 (24) 24.0
 
March 2, 2021, 6 a.m. 21.2 ppb (20) 0.6 ppb (1) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) N/A N/A 6.1 μg/m3 (26) 26.0
 
March 2, 2021, 5 a.m. 27.4 ppb (26) 1.0 ppb (1) N/A 27.0 ppb (26) N/A N/A 9.0 ppb (9) N/A N/A 7.7 μg/m3 (33) 33.0
 
March 2, 2021, 4 a.m. 31.9 ppb (31) 1.9 ppb (2) N/A 30.0 ppb (29) N/A N/A 6.0 ppb (6) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 2, 2021, 3 a.m. 28.2 ppb (27) 0.9 ppb (1) N/A 28.0 ppb (27) N/A N/A 11.0 ppb (11) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 2, 2021, 2 a.m. 25.2 ppb (24) 0.4 ppb (1) N/A 25.0 ppb (24) N/A N/A 18.0 ppb (17) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 2, 2021, 1 a.m. 17.7 ppb (17) 0.7 ppb (1) N/A 17.0 ppb (17) N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
March 2, 2021, midnight 13.4 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A 38.0 ppb (36) N/A N/A 5.8 μg/m3 (25) 36.0
 
March 1, 2021, 11 p.m. 14.5 ppb (14) 3.2 ppb (4) N/A 12.0 ppb (12) N/A N/A 39.0 ppb (37) N/A N/A 6.3 μg/m3 (27) 37.0
 
March 1, 2021, 10 p.m. 18.8 ppb (18) 5.3 ppb (5) N/A 14.0 ppb (14) N/A N/A 38.0 ppb (36) N/A N/A 7.2 μg/m3 (31) 36.0
 
March 1, 2021, 9 p.m. 21.5 ppb (21) 6.9 ppb (7) N/A 15.0 ppb (15) N/A N/A 37.0 ppb (35) N/A N/A 7.8 μg/m3 (33) 35.0
 
March 1, 2021, 8 p.m. 21.3 ppb (21) 7.5 ppb (8) N/A 14.0 ppb (14) N/A N/A 37.0 ppb (35) N/A N/A 7.6 μg/m3 (32) 35.0
 
March 1, 2021, 7 p.m. 19.5 ppb (19) 7.2 ppb (7) N/A 13.0 ppb (13) N/A N/A 36.0 ppb (34) N/A N/A 6.9 μg/m3 (29) 34.0
 
March 1, 2021, 6 p.m. 18.2 ppb (18) 7.0 ppb (7) N/A 11.0 ppb (11) N/A N/A 34.0 ppb (32) N/A N/A 6.7 μg/m3 (28) 32.0
 
March 1, 2021, 5 p.m. 22.7 ppb (22) 9.3 ppb (9) N/A 14.0 ppb (14) N/A N/A 30.0 ppb (28) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 1, 2021, 4 p.m. 24.9 ppb (24) 9.5 ppb (9) N/A 16.0 ppb (16) N/A N/A 27.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 1, 2021, 3 p.m. 47.1 ppb (45) 20.3 ppb (20) N/A 27.0 ppb (26) N/A N/A 15.0 ppb (14) N/A N/A 9.1 μg/m3 (38) 45.0
 
March 1, 2021, 2 p.m. 61.1 ppb (59) 22.9 ppb (22) N/A 38.0 ppb (36) N/A N/A 3.0 ppb (3) N/A N/A 7.5 μg/m3 (32) 59.0
 
March 1, 2021, 1 p.m. 52.1 ppb (50) 13.8 ppb (14) N/A 39.0 ppb (37) N/A N/A 1.0 ppb (1) N/A N/A 6.9 μg/m3 (29) 50.0
 
March 1, 2021, noon 34.7 ppb (33) 2.8 ppb (3) N/A 32.0 ppb (31) N/A N/A 5.0 ppb (5) N/A N/A 7.3 μg/m3 (31) 33.0
 
March 1, 2021, 11 a.m. 32.6 ppb (31) 1.8 ppb (2) N/A 31.0 ppb (30) N/A N/A 6.0 ppb (6) N/A N/A 3.2 μg/m3 (14) 31.0
 
March 1, 2021, 10 a.m. 19.1 ppb (19) 0.6 ppb (1) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (17) N/A N/A 2.8 μg/m3 (12) 19.0
 
March 1, 2021, 9 a.m. 7.9 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) N/A N/A 2.2 μg/m3 (10) 30.0
 
March 1, 2021, 8 a.m. 17.1 ppb (17) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 20.0 ppb (19) N/A N/A 3.1 μg/m3 (13) 19.0
 
March 1, 2021, 7 a.m. 18.4 ppb (18) 0.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 22.0 ppb (21) N/A N/A 3.3 μg/m3 (14) 21.0
 
March 1, 2021, 6 a.m. 10.5 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 2.9 μg/m3 (13) 27.0
 
March 1, 2021, 5 a.m. 6.4 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 2.5 μg/m3 (11) 33.0
 
March 1, 2021, 4 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
March 1, 2021, 3 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 2.8 μg/m3 (12) 33.0
 
March 1, 2021, 2 a.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 2.6 μg/m3 (11) 33.0
 
March 1, 2021, 1 a.m. 3.3 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 3.9 μg/m3 (17) 37.0
 
March 1, 2021, midnight 1.8 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 2.6 μg/m3 (11) 39.0
 
Feb. 28, 2021, 11 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 2.3 μg/m3 (10) 39.0
 
Feb. 28, 2021, 10 p.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 2.1 μg/m3 (9) 40.0
 
Feb. 28, 2021, 9 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 2.5 μg/m3 (11) 39.0
 
Feb. 28, 2021, 8 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 2.9 μg/m3 (13) 38.0
 
Feb. 28, 2021, 7 p.m. 2.5 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 3.7 μg/m3 (16) 38.0
 
Feb. 28, 2021, 6 p.m. 9.2 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 8.6 μg/m3 (36) 36.0
 
Feb. 28, 2021, 5 p.m. 8.2 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) N/A N/A 9.8 μg/m3 (41) 41.0
 
Feb. 28, 2021, 4 p.m. 11.6 ppb (11) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) N/A N/A 11.6 μg/m3 (49) 49.0
 
Feb. 28, 2021, 3 p.m. 9.2 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) N/A N/A 13.7 μg/m3 (55) 55.0
 
Feb. 28, 2021, 2 p.m. 13.1 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (13) N/A N/A 27.0 ppb (25) N/A N/A 12.1 μg/m3 (51) 51.0
 
Feb. 28, 2021, 1 p.m. 11.0 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 11.9 μg/m3 (50) 50.0
 
Feb. 28, 2021, noon 11.8 ppb (12) -0.8 ppb (0) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) N/A N/A 10.3 μg/m3 (43) 43.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
Feb. 28, 2021, 10 a.m. 10.9 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 28.0 ppb (26) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 9 a.m. 5.9 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 5.7 μg/m3 (24) 31.0
 
Feb. 28, 2021, 8 a.m. 6.1 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 4.3 μg/m3 (18) 31.0
 
Feb. 28, 2021, 7 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 4.2 μg/m3 (18) 32.0
 
Feb. 28, 2021, 6 a.m. 7.7 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) N/A N/A 3.7 μg/m3 (16) 29.0
 
Feb. 28, 2021, 5 a.m. 5.0 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 2.3 μg/m3 (10) 33.0
 
Feb. 28, 2021, 4 a.m. 5.1 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 2.2 μg/m3 (10) 33.0
 
Feb. 28, 2021, 3 a.m. 6.7 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) N/A N/A 4.9 μg/m3 (21) 31.0
 
Feb. 28, 2021, 2 a.m. 6.8 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Feb. 28, 2021, 1 a.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.4 μg/m3 (10) 37.0
 
Feb. 28, 2021, midnight 2.5 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 2.2 μg/m3 (10) 37.0
 
Feb. 27, 2021, 11 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
Feb. 27, 2021, 10 p.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
Feb. 27, 2021, 9 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
Feb. 27, 2021, 8 p.m. 2.9 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 2.3 μg/m3 (10) 36.0
 
Feb. 27, 2021, 7 p.m. 3.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
Feb. 27, 2021, 6 p.m. 3.4 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 2.5 μg/m3 (11) 36.0
 
Feb. 27, 2021, 5 p.m. 3.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.3 μg/m3 (10) 37.0
 
Feb. 27, 2021, 4 p.m. 4.7 ppb (5) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A 2.2 μg/m3 (10) 36.0
 
Feb. 27, 2021, 3 p.m. 3.3 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 1.6 μg/m3 (7) 37.0
 
Feb. 27, 2021, 2 p.m. 7.7 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 2.7 μg/m3 (12) 32.0
 
Feb. 27, 2021, 1 p.m. 6.3 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) N/A N/A 2.6 μg/m3 (11) 32.0
 
Feb. 27, 2021, noon 2.1 ppb (2) -0.7 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 2.3 μg/m3 (10) 36.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
Feb. 27, 2021, 10 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 1.9 μg/m3 (8) 36.0