ID: 867

AQSQID: 500070007

Site Name: Underhill

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

Updated: March 4, 2021, 1:32 p.m.

Location: Underhill (Harvey Rd), VT

Reporting: False, Located: True

Current AQI: None

Underhill (Harvey Rd) VT, US: 44.528389, -72.868973

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 3, 2021, 9 p.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A 2.9 ppb (3) 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 8.2 μg/m3 (35) 36.0
 
March 3, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 8.1 μg/m3 (34) 37.0
 
March 3, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 7.5 μg/m3 (32) 37.0
 
March 3, 2021, 6 p.m. N/A 0.1 ppb (1) 2.5 ppb (3) N/A 2.4 ppb (3) 0.0 ppb (0) N/A 0.11 ppb (2) N/A 6.8 μg/m3 (29) 29.0
 
March 3, 2021, 5 p.m. N/A 0.1 ppb (1) 2.4 ppb (3) N/A 2.3 ppb (3) 0.0 ppb (0) N/A 0.11 ppb (2) N/A 6.5 μg/m3 (28) 28.0
 
March 3, 2021, 4 p.m. N/A 0.1 ppb (1) 2.1 ppb (2) N/A 2.0 ppb (2) 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 6.0 μg/m3 (25) 38.0
 
March 3, 2021, 3 p.m. N/A 0.1 ppb (1) 1.9 ppb (2) N/A 1.8 ppb (2) 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 5.2 μg/m3 (22) 38.0
 
March 3, 2021, 2 p.m. N/A 0.1 ppb (1) 1.8 ppb (2) N/A 1.7 ppb (2) 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 5.0 μg/m3 (21) 38.0
 
March 3, 2021, 1 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) 0.0 ppb (0) 42.0 ppb (39) 0.09 ppb (2) N/A 4.5 μg/m3 (19) 39.0
 
March 3, 2021, noon N/A 0.1 ppb (1) 1.8 ppb (2) N/A 1.7 ppb (2) 0.0 ppb (0) 42.0 ppb (39) 0.08 ppb (2) N/A 4.0 μg/m3 (17) 39.0
 
March 3, 2021, 11 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 43.0 ppb (40) 0.09 ppb (2) N/A 3.5 μg/m3 (15) 40.0
 
March 3, 2021, 10 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.08 ppb (2) N/A 3.1 μg/m3 (13) 40.0
 
March 3, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.09 ppb (2) N/A 2.2 μg/m3 (10) 41.0
 
March 3, 2021, 8 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.08 ppb (2) N/A 1.7 μg/m3 (8) 42.0
 
March 3, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.08 ppb (2) N/A 1.5 μg/m3 (7) 42.0
 
March 3, 2021, 6 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.07 ppb (2) N/A 1.5 μg/m3 (7) 42.0
 
March 3, 2021, 5 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.07 ppb (2) N/A 2.1 μg/m3 (9) 41.0
 
March 3, 2021, 4 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.08 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
March 3, 2021, 3 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 3.8 μg/m3 (16) 41.0
 
March 3, 2021, 2 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.09 ppb (2) N/A 2.8 μg/m3 (12) 41.0
 
March 3, 2021, 1 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 2.8 μg/m3 (12) 41.0
 
March 3, 2021, midnight N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 41.0
 
March 2, 2021, 11 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 2.7 μg/m3 (12) 40.0
 
March 2, 2021, 10 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 3.2 μg/m3 (14) 40.0
 
March 2, 2021, 9 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 2.8 μg/m3 (12) 41.0
 
March 2, 2021, 8 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
March 2, 2021, 7 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
March 2, 2021, 6 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 2.4 μg/m3 (10) 40.0
 
March 2, 2021, 5 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 40.0
 
March 2, 2021, 4 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 39.0
 
March 2, 2021, 3 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
March 2, 2021, 2 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 39.0
 
March 2, 2021, 1 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 2.2 μg/m3 (10) 38.0
 
March 2, 2021, noon N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
March 2, 2021, 11 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 2.2 μg/m3 (10) 38.0
 
March 2, 2021, 10 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 2.1 μg/m3 (9) 38.0
 
March 2, 2021, 9 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.14 ppb (2) N/A 1.7 μg/m3 (8) 39.0
 
March 2, 2021, 8 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A 0.3 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 1.7 μg/m3 (8) 38.0
 
March 2, 2021, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A 0.2 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
March 2, 2021, 6 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A 0.3 ppb (1) 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 36.0
 
March 2, 2021, 5 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A 0.3 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 2.4 μg/m3 (10) 38.0
 
March 2, 2021, 4 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A 0.3 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
March 2, 2021, 3 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 38.0 ppb (36) 0.13 ppb (2) N/A 2.8 μg/m3 (12) 36.0
 
March 2, 2021, 2 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 2.6 μg/m3 (11) 35.0
 
March 2, 2021, 1 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 2.8 μg/m3 (12) 35.0
 
March 2, 2021, midnight N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 2.7 μg/m3 (12) 35.0
 
March 1, 2021, 11 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 3.1 μg/m3 (13) 35.0
 
March 1, 2021, 10 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 3.3 μg/m3 (14) 35.0
 
March 1, 2021, 9 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 3.3 μg/m3 (14) 33.0
 
March 1, 2021, 8 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 2.6 μg/m3 (11) 33.0
 
March 1, 2021, 7 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 41.0
 
March 1, 2021, 6 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A 1.1 ppb (2) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
March 1, 2021, 5 p.m. N/A 0.1 ppb (1) 1.8 ppb (2) N/A 1.6 ppb (2) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.3 μg/m3 (23) 23.0
 
March 1, 2021, 4 p.m. N/A 0.2 ppb (1) 2.1 ppb (2) N/A 1.9 ppb (2) 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) N/A 4.4 μg/m3 (19) 36.0
 
March 1, 2021, 3 p.m. N/A 0.1 ppb (1) 1.3 ppb (2) N/A 1.2 ppb (2) 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 37.0
 
March 1, 2021, 2 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 40.0 ppb (38) 0.11 ppb (2) N/A 0.5 μg/m3 (3) 38.0
 
March 1, 2021, 1 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 0.2 μg/m3 (1) 38.0
 
March 1, 2021, noon N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 0.3 μg/m3 (2) 38.0
 
March 1, 2021, 11 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 0.2 μg/m3 (1) 38.0
 
March 1, 2021, 10 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 1.0 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.14 ppb (2) N/A 0.3 μg/m3 (2) 39.0
 
March 1, 2021, 9 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.2 ppb (2) 0.0 ppb (0) 42.0 ppb (39) 0.14 ppb (2) N/A 0.9 μg/m3 (4) 39.0
 
March 1, 2021, 8 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.5 ppb (2) 0.0 ppb (0) 41.0 ppb (38) N/A N/A 2.2 μg/m3 (10) 38.0
 
March 1, 2021, 7 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.7 ppb (2) N/A 41.0 ppb (38) 0.14 ppb (2) N/A 4.1 μg/m3 (18) 38.0
 
March 1, 2021, 6 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A 1.9 ppb (2) 0.0 ppb (0) N/A 0.15 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
March 1, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 5.4 μg/m3 (23) 40.0
 
March 1, 2021, 4 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 6.1 μg/m3 (26) 40.0
 
March 1, 2021, 3 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) N/A 5.7 μg/m3 (24) 41.0
 
March 1, 2021, 2 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 4.8 μg/m3 (20) 42.0
 
March 1, 2021, 1 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 4.1 μg/m3 (18) 43.0
 
March 1, 2021, midnight N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 4.1 μg/m3 (18) 43.0
 
Feb. 28, 2021, 11 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) N/A 3.8 μg/m3 (16) 44.0
 
Feb. 28, 2021, 10 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) N/A 3.8 μg/m3 (16) 44.0
 
Feb. 28, 2021, 9 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 28, 2021, 8 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A 1.0 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) N/A 4.8 μg/m3 (20) 44.0
 
Feb. 28, 2021, 7 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.1 ppb (2) 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) N/A 5.3 μg/m3 (23) 44.0
 
Feb. 28, 2021, 6 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.2 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 5.6 μg/m3 (24) 43.0
 
Feb. 28, 2021, 5 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 5.9 μg/m3 (25) 43.0
 
Feb. 28, 2021, 4 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 6.8 μg/m3 (29) 43.0
 
Feb. 28, 2021, 3 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 7.5 μg/m3 (32) 43.0
 
Feb. 28, 2021, 2 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 7.8 μg/m3 (33) 43.0
 
Feb. 28, 2021, 1 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A 1.5 ppb (2) 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 7.5 μg/m3 (32) 41.0
 
Feb. 28, 2021, noon N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 7.8 μg/m3 (33) 41.0
 
Feb. 28, 2021, 11 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) N/A 7.8 μg/m3 (33) 42.0
 
Feb. 28, 2021, 10 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.14 ppb (2) N/A 8.1 μg/m3 (34) 43.0
 
Feb. 28, 2021, 9 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 47.0 ppb (44) 0.14 ppb (2) N/A 8.3 μg/m3 (35) 44.0
 
Feb. 28, 2021, 8 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 46.0 ppb (43) N/A N/A 8.0 μg/m3 (34) 43.0
 
Feb. 28, 2021, 7 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) N/A 46.0 ppb (43) 0.13 ppb (2) N/A 7.2 μg/m3 (31) 43.0
 
Feb. 28, 2021, 6 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) 0.0 ppb (0) N/A 0.13 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 6.3 μg/m3 (27) 43.0
 
Feb. 28, 2021, 4 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) N/A 6.3 μg/m3 (27) 42.0
 
Feb. 28, 2021, 3 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 43.0
 
Feb. 28, 2021, 2 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.14 ppb (2) N/A 5.6 μg/m3 (24) 43.0
 
Feb. 28, 2021, 1 a.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 5.2 μg/m3 (22) 41.0
 
Feb. 28, 2021, midnight N/A 0.0 ppb (0) 1.5 ppb (2) N/A 1.5 ppb (2) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 4.6 μg/m3 (20) 41.0
 
Feb. 27, 2021, 11 p.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 41.0
 
Feb. 27, 2021, 10 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A 1.1 ppb (2) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 0.7 μg/m3 (3) 42.0
 
Feb. 27, 2021, 9 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.11 ppb (2) N/A 0.7 μg/m3 (3) 43.0
 
Feb. 27, 2021, 8 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 0.7 μg/m3 (3) 41.0
 
Feb. 27, 2021, 7 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 0.5 μg/m3 (3) 41.0
 
Feb. 27, 2021, 6 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 0.6 μg/m3 (3) 43.0
 
Feb. 27, 2021, 5 p.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A 1.0 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 1.4 μg/m3 (6) 44.0
 
Feb. 27, 2021, 4 p.m. N/A 0.1 ppb (1) 1.3 ppb (2) N/A 1.2 ppb (2) 0.0 ppb (0) 47.0 ppb (44) 0.11 ppb (2) N/A 2.5 μg/m3 (11) 44.0
 
Feb. 27, 2021, 3 p.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.11 ppb (2) N/A 3.3 μg/m3 (14) 43.0
 
Feb. 27, 2021, 2 p.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A 1.4 ppb (2) 0.0 ppb (0) 47.0 ppb (44) 0.11 ppb (2) N/A 3.5 μg/m3 (15) 44.0
 
Feb. 27, 2021, 1 p.m. N/A 0.1 ppb (1) 2.0 ppb (2) N/A 1.9 ppb (2) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 4.3 μg/m3 (18) 43.0
 
Feb. 27, 2021, noon N/A 0.0 ppb (0) 3.1 ppb (3) N/A 3.1 ppb (3) 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 5.5 μg/m3 (23) 41.0
 
Feb. 27, 2021, 11 a.m. N/A 0.0 ppb (0) 5.6 ppb (6) N/A 5.6 ppb (6) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 7.1 μg/m3 (30) 38.0
 
Feb. 27, 2021, 10 a.m. N/A 0.0 ppb (0) 6.1 ppb (6) N/A 6.2 ppb (6) 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 7.1 μg/m3 (30) 38.0
 
Feb. 27, 2021, 9 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) N/A 4.9 ppb (5) 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) N/A 6.3 μg/m3 (27) 41.0
 
Feb. 27, 2021, 8 a.m. N/A 0.0 ppb (0) 3.7 ppb (4) N/A 3.7 ppb (4) 0.0 ppb (0) 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
Feb. 27, 2021, 7 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A 2.7 ppb (3) N/A 48.0 ppb (45) 0.12 ppb (2) N/A 5.8 μg/m3 (25) 45.0
 
Feb. 27, 2021, 6 a.m. N/A 0.0 ppb (0) 1.6 ppb (2) N/A 1.6 ppb (2) 0.0 ppb (0) N/A 0.11 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Feb. 27, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.1 ppb (2) N/A 5.0 μg/m3 (21) 45.0
 
Feb. 27, 2021, 4 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 1.0 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.09 ppb (2) N/A 4.0 μg/m3 (17) 44.0
 
Feb. 27, 2021, 3 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 27, 2021, 2 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 43.0
 
Feb. 27, 2021, 1 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 2.6 μg/m3 (11) 43.0
 
Feb. 27, 2021, midnight N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 2.5 μg/m3 (11) 42.0
 
Feb. 26, 2021, 11 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.09 ppb (2) N/A 2.5 μg/m3 (11) 42.0
 
Feb. 26, 2021, 10 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 2.6 μg/m3 (11) 41.0
 
Feb. 26, 2021, 9 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 2.4 μg/m3 (10) 42.0
 
Feb. 26, 2021, 8 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 2.1 μg/m3 (9) 43.0
 
Feb. 26, 2021, 7 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 2.0 μg/m3 (9) 42.0
 
Feb. 26, 2021, 6 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 2.1 μg/m3 (9) 42.0
 
Feb. 26, 2021, 5 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 42.0
 
Feb. 26, 2021, 4 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 41.0
 
Feb. 26, 2021, 3 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 1.9 μg/m3 (8) 40.0
 
Feb. 26, 2021, 2 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 1.8 μg/m3 (8) 40.0
 
Feb. 26, 2021, 1 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
Feb. 26, 2021, noon N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 3.0 μg/m3 (13) 39.0
 
Feb. 26, 2021, 11 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 3.3 μg/m3 (14) 39.0
 
Feb. 26, 2021, 10 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 3.3 μg/m3 (14) 40.0
 
Feb. 26, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 3.3 μg/m3 (14) 41.0
 
Feb. 26, 2021, 8 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 44.0 ppb (41) N/A N/A 3.0 μg/m3 (13) 41.0
 
Feb. 26, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) N/A 45.0 ppb (42) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 42.0
 
Feb. 26, 2021, 6 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) N/A 0.12 ppb (2) N/A 3.7 μg/m3 (16) 16.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 3.5 μg/m3 (15) 41.0
 
Feb. 26, 2021, 4 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 3.2 μg/m3 (14) 41.0
 
Feb. 26, 2021, 3 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 2.8 μg/m3 (12) 41.0
 
Feb. 26, 2021, 2 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 42.0
 
Feb. 26, 2021, 1 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 43.0
 
Feb. 26, 2021, midnight N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 3.1 μg/m3 (13) 43.0
 
Feb. 25, 2021, 11 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 44.0
 
Feb. 25, 2021, 10 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 2.1 μg/m3 (9) 44.0
 
Feb. 25, 2021, 9 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A 0.6 ppb (1) 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 2.1 μg/m3 (9) 42.0
 
Feb. 25, 2021, 8 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 2.6 μg/m3 (11) 41.0
 
Feb. 25, 2021, 7 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A 0.9 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.0 μg/m3 (13) 39.0
 
Feb. 25, 2021, 6 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A 0.7 ppb (1) N/A 41.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
Feb. 25, 2021, 5 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A 0.7 ppb (1) N/A 40.0 ppb (38) N/A N/A N/A 38.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 38.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.1 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
Feb. 25, 2021, 2 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) N/A 0.1 ppb (2) N/A 2.9 μg/m3 (13) 13.0
 
Feb. 25, 2021, 1 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.7 ppb (1) 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 2.9 μg/m3 (13) 39.0
 
Feb. 25, 2021, noon N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.4 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 2.7 μg/m3 (12) 40.0
 
Feb. 25, 2021, 11 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 2.4 μg/m3 (10) 41.0
 
Feb. 25, 2021, 10 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 1.7 μg/m3 (8) 41.0
 
Feb. 25, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A 0.5 ppb (1) 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
Feb. 25, 2021, 8 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
Feb. 25, 2021, 7 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.5 ppb (3) N/A 37.0 ppb (35) 0.14 ppb (2) N/A 2.2 μg/m3 (10) 35.0
 
Feb. 25, 2021, 6 a.m. N/A 0.0 ppb (0) 2.6 ppb (3) N/A 2.6 ppb (3) 0.0 ppb (0) N/A 0.13 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.13 ppb (2) N/A 7.6 μg/m3 (32) 48.0
 
Feb. 25, 2021, 4 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A 2.5 ppb (3) 0.0 ppb (0) 52.0 ppb (49) 0.13 ppb (2) N/A 6.2 μg/m3 (26) 49.0
 
Feb. 25, 2021, 3 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) 0.0 ppb (0) 52.0 ppb (49) 0.13 ppb (2) N/A 4.5 μg/m3 (19) 49.0
 
Feb. 25, 2021, 2 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A 2.3 ppb (3) 0.0 ppb (0) 51.0 ppb (48) 0.13 ppb (2) N/A 4.1 μg/m3 (18) 48.0
 
Feb. 25, 2021, 1 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A 1.8 ppb (2) 0.0 ppb (0) 51.0 ppb (48) 0.12 ppb (2) N/A 3.8 μg/m3 (16) 48.0
 
Feb. 25, 2021, midnight N/A 0.0 ppb (0) 1.2 ppb (2) N/A 1.3 ppb (2) 0.0 ppb (0) 50.0 ppb (47) 0.11 ppb (2) N/A 3.8 μg/m3 (16) 47.0
 
Feb. 24, 2021, 11 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 47.0 ppb (44) 0.11 ppb (2) N/A 3.3 μg/m3 (14) 44.0
 
Feb. 24, 2021, 10 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A 0.8 ppb (1) 0.0 ppb (0) 46.0 ppb (43) 0.11 ppb (2) N/A 3.0 μg/m3 (13) 43.0