AQSQID: 490110004

Site Name: Bv

Location: Bountiful (Wayne Cooper), UT

Reporting: True, Located: True

Current AQI: 32.0

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 30, 2020, 5 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.7 μg/m3 (7) 32.0
 
March 30, 2020, 4 p.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 30, 2020, 3 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
March 30, 2020, 2 p.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) N/A N/A 1.2 μg/m3 (5) 27.0
 
March 30, 2020, 1 p.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 2.5 μg/m3 (10) 27.0
 
March 30, 2020, noon 16.5 ppb (15) 1.7 ppb (2) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
March 30, 2020, 11 a.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
March 30, 2020, 10 a.m. 5.6 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
March 30, 2020, 9 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
March 30, 2020, 8 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
March 30, 2020, 7 a.m. 4.4 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 2.8 μg/m3 (12) 27.0
 
March 30, 2020, 6 a.m. 10.9 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) N/A N/A 3.9 μg/m3 (16) 17.0
 
March 30, 2020, 5 a.m. 12.0 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
March 30, 2020, 4 a.m. 2.6 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
March 30, 2020, 3 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 30, 2020, 2 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 30, 2020, 1 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
March 30, 2020, midnight 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 2.1 μg/m3 (9) 32.0
 
March 29, 2020, 11 p.m. -0.4 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.2 μg/m3 (9) 36.0
 
March 29, 2020, 10 p.m. -0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
March 29, 2020, 9 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
March 29, 2020, 8 p.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.9 μg/m3 (12) 36.0
 
March 29, 2020, 7 p.m. 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.6 μg/m3 (11) 36.0
 
March 29, 2020, 6 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
March 29, 2020, 5 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 2.7 μg/m3 (11) 34.0
 
March 29, 2020, 4 p.m. 0.2 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 2.3 μg/m3 (10) 33.0
 
March 29, 2020, 3 p.m. 11.2 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
March 29, 2020, 2 p.m. 26.2 ppb (24) 9.3 ppb (9) N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 29, 2020, 1 p.m. 32.8 ppb (30) 10.1 ppb (9) N/A 23.0 ppb (21) N/A N/A 13.0 ppb (10) N/A N/A 5.9 μg/m3 (25) 30.0
 
March 29, 2020, noon 30.1 ppb (28) 2.8 ppb (3) N/A 27.0 ppb (25) N/A N/A 7.0 ppb (5) N/A N/A 5.0 μg/m3 (21) 28.0
 
March 29, 2020, 11 a.m. 34.5 ppb (32) 2.7 ppb (3) N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) N/A N/A 5.6 μg/m3 (23) 32.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 2.6 μg/m3 (11) 11.0
 
March 29, 2020, 9 a.m. 15.1 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) N/A N/A 1.6 μg/m3 (7) 14.0
 
March 29, 2020, 8 a.m. 10.1 ppb (9) -0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 1.4 μg/m3 (6) 18.0
 
March 29, 2020, 7 a.m. 8.5 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 1.6 μg/m3 (7) 18.0
 
March 29, 2020, 6 a.m. 4.0 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 1.5 μg/m3 (6) 25.0
 
March 29, 2020, 5 a.m. 6.9 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 29, 2020, 4 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 29, 2020, 3 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 29, 2020, 2 a.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
March 29, 2020, 1 a.m. 6.8 ppb (6) -0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
March 29, 2020, midnight 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
March 28, 2020, 11 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 3.4 μg/m3 (14) 32.0
 
March 28, 2020, 10 p.m. -0.5 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
March 28, 2020, 9 p.m. -0.5 ppb (0) 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 4.2 μg/m3 (18) 32.0
 
March 28, 2020, 8 p.m. 0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) N/A N/A 4.6 μg/m3 (19) 31.0
 
March 28, 2020, 7 p.m. -0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) N/A N/A 5.2 μg/m3 (22) 32.0
 
March 28, 2020, 6 p.m. 0.2 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 5.5 μg/m3 (23) 33.0
 
March 28, 2020, 5 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 6.9 μg/m3 (29) 33.0
 
March 28, 2020, 4 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 6.6 μg/m3 (28) 33.0
 
March 28, 2020, 3 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 5.5 μg/m3 (23) 32.0
 
March 28, 2020, 2 p.m. 1.7 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 28, 2020, 1 p.m. 13.5 ppb (12) 1.5 ppb (1) N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 28, 2020, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 5.6 μg/m3 (23) 29.0
 
March 28, 2020, 11 a.m. 3.6 ppb (3) -1.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
March 28, 2020, 9 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 3.8 μg/m3 (16) 27.0
 
March 28, 2020, 8 a.m. 1.1 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) N/A N/A 3.3 μg/m3 (14) 30.0
 
March 28, 2020, 7 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 3.4 μg/m3 (14) 30.0
 
March 28, 2020, 6 a.m. 1.5 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 3.5 μg/m3 (15) 31.0
 
March 28, 2020, 5 a.m. 2.2 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
March 28, 2020, 4 a.m. 3.1 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 2.5 μg/m3 (10) 30.0
 
March 28, 2020, 3 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
March 28, 2020, 2 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
March 28, 2020, 1 a.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 1.9 μg/m3 (8) 34.0
 
March 28, 2020, midnight 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
March 27, 2020, 11 p.m. 0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
March 27, 2020, 10 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 2.3 μg/m3 (10) 34.0
 
March 27, 2020, 9 p.m. 1.2 ppb (1) 0.9 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
March 27, 2020, 8 p.m. 1.0 ppb (1) 0.9 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
March 27, 2020, 7 p.m. 1.4 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.2 μg/m3 (9) 34.0
 
March 27, 2020, 6 p.m. 1.3 ppb (1) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.9 μg/m3 (12) 34.0
 
March 27, 2020, 5 p.m. 2.4 ppb (2) 1.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 3.3 μg/m3 (14) 33.0
 
March 27, 2020, 4 p.m. 4.2 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 3.8 μg/m3 (16) 31.0
 
March 27, 2020, 3 p.m. 30.3 ppb (28) 14.3 ppb (13) N/A 16.0 ppb (15) N/A N/A 29.0 ppb (22) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 27, 2020, 2 p.m. 40.5 ppb (38) 18.4 ppb (17) N/A 22.0 ppb (20) N/A N/A 23.0 ppb (18) N/A N/A 7.1 μg/m3 (30) 38.0
 
March 27, 2020, 1 p.m. 48.7 ppb (45) 21.3 ppb (20) N/A 27.0 ppb (25) N/A N/A 12.0 ppb (9) N/A N/A 4.9 μg/m3 (20) 45.0
 
March 27, 2020, noon 39.8 ppb (37) 7.6 ppb (7) N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) N/A N/A 4.1 μg/m3 (17) 37.0
 
March 27, 2020, 11 a.m. 41.3 ppb (38) 8.2 ppb (8) N/A 33.0 ppb (31) N/A N/A 1.0 ppb (1) N/A N/A 3.7 μg/m3 (15) 38.0
 
March 27, 2020, 10 a.m. 25.9 ppb (24) 1.3 ppb (1) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 24.0
 
March 27, 2020, 9 a.m. 29.0 ppb (27) 1.3 ppb (1) N/A 28.0 ppb (26) N/A N/A 7.0 ppb (5) N/A N/A 2.5 μg/m3 (10) 27.0
 
March 27, 2020, 8 a.m. 10.5 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 1.5 μg/m3 (6) 22.0
 
March 27, 2020, 7 a.m. 3.2 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
March 27, 2020, 6 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
March 27, 2020, 5 a.m. 9.9 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 1.1 μg/m3 (5) 22.0
 
March 27, 2020, 4 a.m. 8.3 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 1.1 μg/m3 (5) 22.0
 
March 27, 2020, 3 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
March 27, 2020, 2 a.m. 3.2 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 1.2 μg/m3 (5) 27.0
 
March 27, 2020, 1 a.m. 5.8 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
March 27, 2020, midnight 2.0 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
March 26, 2020, 11 p.m. 0.0 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
March 26, 2020, 10 p.m. 0.7 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
March 26, 2020, 9 p.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.0 μg/m3 (8) 33.0
 
March 26, 2020, 8 p.m. 1.4 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.6 μg/m3 (11) 33.0
 
March 26, 2020, 7 p.m. 1.8 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
March 26, 2020, 6 p.m. 3.9 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
March 26, 2020, 5 p.m. 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 2.8 μg/m3 (12) 30.0
 
March 26, 2020, 4 p.m. 7.4 ppb (7) 3.5 ppb (3) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
March 26, 2020, 3 p.m. 9.1 ppb (8) 3.6 ppb (3) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 2.1 μg/m3 (9) 31.0
 
March 26, 2020, 2 p.m. 12.7 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
March 26, 2020, 1 p.m. 20.5 ppb (19) 3.0 ppb (3) N/A 18.0 ppb (17) N/A N/A 27.0 ppb (21) N/A N/A 3.2 μg/m3 (13) 21.0
 
March 26, 2020, noon 12.8 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 26, 2020, 11 a.m. 10.8 ppb (10) 0.1 ppb (0) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
March 26, 2020, 10 a.m. 6.0 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
March 26, 2020, 9 a.m. 7.5 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 1.9 μg/m3 (8) 27.0
 
March 26, 2020, 8 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
March 26, 2020, 7 a.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 26, 2020, 6 a.m. 13.5 ppb (12) -0.1 ppb (0) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 26, 2020, 5 a.m. 16.5 ppb (15) 0.1 ppb (0) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) N/A N/A 9.4 μg/m3 (39) 39.0
 
March 26, 2020, 4 a.m. 10.6 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) N/A N/A 5.3 μg/m3 (22) 22.0
 
March 26, 2020, 3 a.m. 10.6 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
March 26, 2020, 2 a.m. 6.9 ppb (6) -0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
March 26, 2020, 1 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
March 26, 2020, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 1.9 μg/m3 (8) 32.0
 
March 25, 2020, 11 p.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
March 25, 2020, 10 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
March 25, 2020, 9 p.m. -0.4 ppb (0) 0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 2.5 μg/m3 (10) 37.0
 
March 25, 2020, 8 p.m. -0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 2.6 μg/m3 (11) 37.0
 
March 25, 2020, 7 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 3.9 μg/m3 (16) 34.0
 
March 25, 2020, 6 p.m. 3.6 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 4.7 μg/m3 (20) 34.0
 
March 25, 2020, 5 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 4.1 μg/m3 (17) 35.0
 
March 25, 2020, 4 p.m. 4.0 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 3.8 μg/m3 (16) 33.0
 
March 25, 2020, 3 p.m. 14.2 ppb (13) 3.4 ppb (3) N/A 11.0 ppb (10) N/A N/A 34.0 ppb (26) N/A N/A 4.6 μg/m3 (19) 26.0
 
March 25, 2020, 2 p.m. 6.3 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 3.5 μg/m3 (15) 29.0
 
March 25, 2020, 1 p.m. 21.0 ppb (19) 2.3 ppb (2) N/A 19.0 ppb (18) N/A N/A 22.0 ppb (17) N/A N/A 4.3 μg/m3 (18) 19.0
 
March 25, 2020, noon 21.9 ppb (20) 0.6 ppb (1) N/A 21.0 ppb (19) N/A N/A 22.0 ppb (17) N/A N/A 4.2 μg/m3 (18) 20.0
 
March 25, 2020, 11 a.m. 2.9 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
March 25, 2020, 10 a.m. 2.4 ppb (2) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
March 25, 2020, 9 a.m. 0.4 ppb (0) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 2.5 μg/m3 (10) 34.0
 
March 25, 2020, 8 a.m. 3.5 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
March 25, 2020, 7 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 0.5 μg/m3 (2) 28.0
 
March 25, 2020, 6 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
March 25, 2020, 5 a.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 25, 2020, 4 a.m. 5.2 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
March 25, 2020, 3 a.m. 4.1 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
March 25, 2020, 2 a.m. 8.2 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 34.0 ppb (26) N/A N/A 2.7 μg/m3 (11) 26.0
 
March 25, 2020, 1 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 1.9 μg/m3 (8) 31.0
 
March 25, 2020, midnight 5.4 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 3.2 μg/m3 (13) 30.0
 
March 24, 2020, 11 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 24, 2020, 10 p.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 1.6 μg/m3 (7) 36.0
 
March 24, 2020, 9 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
March 24, 2020, 8 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 24, 2020, 7 p.m. 0.1 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 24, 2020, 6 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) N/A N/A 1.6 μg/m3 (7) 34.0
 
March 24, 2020, 5 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
March 24, 2020, 4 p.m. 3.4 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 2.2 μg/m3 (9) 30.0
 
March 24, 2020, 3 p.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) N/A N/A 1.3 μg/m3 (5) 30.0
 
March 24, 2020, 2 p.m. 5.7 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 1.5 μg/m3 (6) 26.0
 
March 24, 2020, 1 p.m. 4.2 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
March 24, 2020, noon 6.8 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
March 24, 2020, 11 a.m. 9.9 ppb (9) 0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 1.3 μg/m3 (5) 20.0
 
March 24, 2020, 10 a.m. 4.7 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
March 24, 2020, 9 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 1.1 μg/m3 (5) 26.0
 
March 24, 2020, 8 a.m. -0.1 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) N/A N/A 0.9 μg/m3 (4) 32.0
 
March 24, 2020, 7 a.m. 0.1 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
March 24, 2020, 6 a.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
March 24, 2020, 5 a.m. 2.0 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) N/A N/A 1.3 μg/m3 (5) 29.0
 
March 24, 2020, 4 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 1.7 μg/m3 (7) 26.0
 
March 24, 2020, 3 a.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.5 μg/m3 (6) 30.0
 
March 24, 2020, 2 a.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 1.7 μg/m3 (7) 32.0
 
March 24, 2020, 1 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
March 24, 2020, midnight 0.3 ppb (0) -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
March 23, 2020, 11 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
March 23, 2020, 10 p.m. -0.2 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (36) N/A N/A 1.9 μg/m3 (8) 36.0
 
March 23, 2020, 9 p.m. -0.1 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 1.9 μg/m3 (8) 37.0
 
March 23, 2020, 8 p.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
March 23, 2020, 7 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 23, 2020, 6 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 1.7 μg/m3 (7) 37.0