ID: 2978

AQSQID: 060550004

Site Name: Napa - Napa Valley College

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

Updated: March 7, 2021, 11:32 p.m.

Location: Napa (Soscol Gateway S), CA

Reporting: False, Located: True

Current AQI: None

Napa (Soscol Gateway S) CA, US: 38.278849, -122.275024

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 26, 2021, 2 a.m. 4.0 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.38 ppb (5) N/A 1.0 μg/m3 (5) 33.0
 
Feb. 26, 2021, 1 a.m. 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.35 ppb (4) N/A 0.0 μg/m3 (0) 38.0
 
Feb. 26, 2021, midnight 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.29 ppb (4) N/A 2.0 μg/m3 (9) 43.0
 
Feb. 25, 2021, 11 p.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.3 ppb (4) N/A 2.0 μg/m3 (9) 44.0
 
Feb. 25, 2021, 10 p.m. 1.1 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) 0.28 ppb (4) N/A 1.0 μg/m3 (5) 44.0
 
Feb. 25, 2021, 9 p.m. 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.28 ppb (4) N/A 1.0 μg/m3 (5) 43.0
 
Feb. 25, 2021, 8 p.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.3 ppb (4) N/A 3.0 μg/m3 (13) 41.0
 
Feb. 25, 2021, 7 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.31 ppb (4) N/A 3.0 μg/m3 (13) 41.0
 
Feb. 25, 2021, 6 p.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (39) 0.33 ppb (4) N/A 1.0 μg/m3 (5) 39.0
 
Feb. 25, 2021, 5 p.m. 3.4 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.34 ppb (4) N/A 1.0 μg/m3 (5) 38.0
 
Feb. 25, 2021, 4 p.m. 10.7 ppb (11) 3.1 ppb (3) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.47 ppb (6) N/A 6.0 μg/m3 (25) 32.0
 
Feb. 25, 2021, 3 p.m. 25.7 ppb (25) 6.0 ppb (6) N/A 20.0 ppb (19) N/A N/A 21.0 ppb (20) 0.54 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 25, 2021, 2 p.m. 10.1 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 2.0 μg/m3 (9) 33.0
 
Feb. 25, 2021, 1 p.m. 1.0 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) 0.31 ppb (4) N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, noon 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) 0.3 ppb (4) N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, 11 a.m. 0.6 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 39.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Feb. 25, 2021, 9 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) 0.3 ppb (4) N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, 8 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.3 ppb (4) N/A 0.0 μg/m3 (0) 41.0
 
Feb. 25, 2021, 7 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.3 ppb (4) N/A 3.0 μg/m3 (13) 42.0
 
Feb. 25, 2021, 6 a.m. 0.4 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.31 ppb (4) N/A 4.0 μg/m3 (17) 42.0
 
Feb. 25, 2021, 5 a.m. 0.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.3 ppb (4) N/A 3.0 μg/m3 (13) 43.0
 
Feb. 25, 2021, 4 a.m. 0.8 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.31 ppb (4) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 25, 2021, 3 a.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.32 ppb (4) N/A 1.0 μg/m3 (5) 43.0
 
Feb. 25, 2021, 2 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.3 ppb (4) N/A 2.0 μg/m3 (9) 42.0
 
Feb. 25, 2021, 1 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.29 ppb (4) N/A 4.0 μg/m3 (17) 42.0
 
Feb. 25, 2021, midnight 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.26 ppb (4) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 24, 2021, 11 p.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.27 ppb (4) N/A 2.0 μg/m3 (9) 43.0
 
Feb. 24, 2021, 10 p.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.28 ppb (4) N/A 0.0 μg/m3 (0) 43.0
 
Feb. 24, 2021, 9 p.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) 0.3 ppb (4) N/A 1.0 μg/m3 (5) 42.0
 
Feb. 24, 2021, 8 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.28 ppb (4) N/A 2.0 μg/m3 (9) 41.0
 
Feb. 24, 2021, 7 p.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 40.0
 
Feb. 24, 2021, 6 p.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.37 ppb (5) N/A 2.0 μg/m3 (9) 38.0
 
Feb. 24, 2021, 5 p.m. 18.7 ppb (18) 6.6 ppb (7) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.52 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 4 p.m. 31.5 ppb (30) 16.2 ppb (16) N/A 15.0 ppb (15) N/A N/A 9.0 ppb (9) 0.64 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 24, 2021, 3 p.m. 36.0 ppb (34) 17.5 ppb (17) N/A 19.0 ppb (18) N/A N/A 4.0 ppb (4) 0.7 ppb (8) N/A 7.0 μg/m3 (30) 34.0
 
Feb. 24, 2021, 2 p.m. 21.6 ppb (21) 7.5 ppb (8) N/A 14.0 ppb (14) N/A N/A 11.0 ppb (11) 0.6 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 24, 2021, 1 p.m. 20.6 ppb (20) 6.6 ppb (7) N/A 14.0 ppb (14) N/A N/A 6.0 ppb (6) 0.57 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 24, 2021, noon 8.9 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 12.0 ppb (12) 0.46 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 24, 2021, 11 a.m. 6.4 ppb (7) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (13) 0.45 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 9 a.m. 8.4 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.46 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 8 a.m. 8.6 ppb (9) -0.2 ppb (0) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.45 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 24, 2021, 7 a.m. 11.1 ppb (11) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) 0.46 ppb (6) N/A 3.0 μg/m3 (13) 13.0
 
Feb. 24, 2021, 6 a.m. 16.5 ppb (16) 1.8 ppb (2) N/A 15.0 ppb (15) N/A N/A 10.0 ppb (10) 0.53 ppb (6) N/A 3.0 μg/m3 (13) 16.0
 
Feb. 24, 2021, 5 a.m. 10.0 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) 0.51 ppb (6) N/A 2.0 μg/m3 (9) 17.0
 
Feb. 24, 2021, 4 a.m. 11.6 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.48 ppb (6) N/A 2.0 μg/m3 (9) 20.0
 
Feb. 24, 2021, 3 a.m. 13.3 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) 0.49 ppb (6) N/A 3.0 μg/m3 (13) 23.0
 
Feb. 24, 2021, 2 a.m. 16.3 ppb (16) 1.8 ppb (2) N/A 15.0 ppb (15) N/A N/A 27.0 ppb (25) 0.45 ppb (6) N/A 4.0 μg/m3 (17) 25.0
 
Feb. 24, 2021, 1 a.m. 5.4 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (38) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 38.0
 
Feb. 24, 2021, midnight 3.6 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.31 ppb (4) N/A 5.0 μg/m3 (21) 41.0
 
Feb. 23, 2021, 11 p.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 42.0
 
Feb. 23, 2021, 10 p.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.3 ppb (4) N/A 5.0 μg/m3 (21) 43.0
 
Feb. 23, 2021, 9 p.m. 2.6 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (43) 0.31 ppb (4) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 23, 2021, 8 p.m. 2.8 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (43) 0.3 ppb (4) N/A 4.0 μg/m3 (17) 43.0
 
Feb. 23, 2021, 7 p.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (44) 0.31 ppb (4) N/A 3.0 μg/m3 (13) 44.0
 
Feb. 23, 2021, 6 p.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.35 ppb (4) N/A 3.0 μg/m3 (13) 41.0
 
Feb. 23, 2021, 5 p.m. 4.1 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) 0.39 ppb (5) N/A 5.0 μg/m3 (21) 37.0
 
Feb. 23, 2021, 4 p.m. 21.4 ppb (21) 11.3 ppb (11) N/A 10.0 ppb (10) N/A N/A 18.0 ppb (17) 0.54 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 3 p.m. 34.4 ppb (33) 17.9 ppb (17) N/A 17.0 ppb (17) N/A N/A 3.0 ppb (3) 0.71 ppb (8) N/A 5.0 μg/m3 (21) 33.0
 
Feb. 23, 2021, 2 p.m. 26.2 ppb (25) 10.3 ppb (10) N/A 16.0 ppb (16) N/A N/A 4.0 ppb (4) 0.68 ppb (8) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 1 p.m. 13.7 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A 8.0 ppb (8) 0.55 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, noon 7.0 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) 0.47 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 23, 2021, 11 a.m. 7.0 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (9) 0.51 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 9 a.m. 4.0 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) 0.49 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 8 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.48 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Feb. 23, 2021, 7 a.m. 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) 0.54 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 23, 2021, 6 a.m. 6.4 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (16) 0.54 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 5 a.m. 11.7 ppb (12) 1.5 ppb (2) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) 0.57 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 23, 2021, 4 a.m. 11.5 ppb (11) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.59 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 3 a.m. 12.5 ppb (12) 1.7 ppb (2) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.62 ppb (7) N/A 3.0 μg/m3 (13) 19.0
 
Feb. 23, 2021, 2 a.m. 17.5 ppb (17) 2.6 ppb (3) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) 0.64 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 1 a.m. 5.7 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.42 ppb (5) N/A 3.0 μg/m3 (13) 35.0
 
Feb. 23, 2021, midnight 1.6 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.37 ppb (5) N/A 3.0 μg/m3 (13) 38.0
 
Feb. 22, 2021, 11 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.38 ppb (5) N/A -1.0 μg/m3 (0) 38.0
 
Feb. 22, 2021, 10 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.38 ppb (5) N/A -1.0 μg/m3 (0) 37.0
 
Feb. 22, 2021, 9 p.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) 0.38 ppb (5) N/A 2.0 μg/m3 (9) 35.0
 
Feb. 22, 2021, 8 p.m. 3.0 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 33.0
 
Feb. 22, 2021, 7 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.42 ppb (5) N/A 5.0 μg/m3 (21) 29.0
 
Feb. 22, 2021, 6 p.m. 7.9 ppb (8) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.48 ppb (6) N/A 2.0 μg/m3 (9) 22.0
 
Feb. 22, 2021, 5 p.m. 9.5 ppb (9) 3.3 ppb (4) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) 0.5 ppb (6) N/A -4.0 μg/m3 (0) 18.0
 
Feb. 22, 2021, 4 p.m. 18.1 ppb (18) 8.2 ppb (8) N/A 10.0 ppb (10) N/A N/A 10.0 ppb (10) 0.58 ppb (7) N/A N/A 18.0
 
Feb. 22, 2021, 3 p.m. 25.0 ppb (24) 12.1 ppb (12) N/A 13.0 ppb (13) N/A N/A 4.0 ppb (4) 0.64 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 22, 2021, 2 p.m. 30.8 ppb (30) 16.4 ppb (16) N/A 14.0 ppb (14) N/A N/A 3.0 ppb (3) 0.77 ppb (10) N/A 5.0 μg/m3 (21) 30.0
 
Feb. 22, 2021, 1 p.m. 12.9 ppb (13) 3.0 ppb (3) N/A 10.0 ppb (10) N/A N/A 7.0 ppb (7) 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 22, 2021, noon 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (11) 0.44 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 22, 2021, 11 a.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (12) 0.45 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 22, 2021, 9 a.m. 5.0 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.46 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 22, 2021, 8 a.m. 5.7 ppb (6) -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (16) 0.47 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2021, 7 a.m. 6.9 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.49 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 22, 2021, 6 a.m. 9.9 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 11.0 ppb (11) 0.58 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 22, 2021, 5 a.m. 10.0 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 13.0 ppb (13) 0.52 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 22, 2021, 4 a.m. 12.8 ppb (13) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A 14.0 ppb (13) 0.61 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 22, 2021, 3 a.m. 13.0 ppb (13) 1.2 ppb (2) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.61 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 22, 2021, 2 a.m. 6.3 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.44 ppb (5) N/A 0.0 μg/m3 (0) 26.0
 
Feb. 22, 2021, 1 a.m. 3.5 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.38 ppb (5) N/A 1.0 μg/m3 (5) 32.0
 
Feb. 22, 2021, midnight 1.1 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 36.0
 
Feb. 21, 2021, 11 p.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 35.0
 
Feb. 21, 2021, 10 p.m. 0.9 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 36.0
 
Feb. 21, 2021, 9 p.m. 0.7 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.36 ppb (5) N/A 4.0 μg/m3 (17) 36.0
 
Feb. 21, 2021, 8 p.m. 0.9 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 35.0
 
Feb. 21, 2021, 7 p.m. 1.3 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
Feb. 21, 2021, 6 p.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.41 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
Feb. 21, 2021, 5 p.m. 4.8 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) 0.46 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2021, 4 p.m. 7.6 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (12) 0.49 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 21, 2021, 3 p.m. 13.7 ppb (13) 5.5 ppb (6) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) 0.56 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2021, 2 p.m. 11.7 ppb (12) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A 5.0 ppb (5) 0.56 ppb (7) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, 1 p.m. 9.6 ppb (10) 3.3 ppb (4) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (8) 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, noon 4.6 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (11) 0.45 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2021, 11 a.m. 2.8 ppb (3) -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.44 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2021, 9 a.m. 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, 8 a.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.45 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2021, 7 a.m. 10.0 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.55 ppb (7) N/A 4.0 μg/m3 (17) 17.0
 
Feb. 21, 2021, 6 a.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.46 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Feb. 21, 2021, 5 a.m. 7.8 ppb (8) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 21, 2021, 4 a.m. 11.2 ppb (11) 1.5 ppb (2) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) 0.58 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 21, 2021, 3 a.m. 15.1 ppb (15) 2.0 ppb (2) N/A 13.0 ppb (13) N/A N/A 13.0 ppb (13) 0.63 ppb (7) N/A 5.0 μg/m3 (21) 21.0
 
Feb. 21, 2021, 2 a.m. 6.0 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.47 ppb (6) N/A 3.0 μg/m3 (13) 25.0
 
Feb. 21, 2021, 1 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 34.0
 
Feb. 21, 2021, midnight 3.1 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.35 ppb (4) N/A 4.0 μg/m3 (17) 36.0
 
Feb. 20, 2021, 11 p.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 37.0
 
Feb. 20, 2021, 10 p.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) 0.36 ppb (5) N/A 2.0 μg/m3 (9) 38.0
 
Feb. 20, 2021, 9 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.39 ppb (5) N/A 0.0 μg/m3 (0) 37.0
 
Feb. 20, 2021, 8 p.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) 0.41 ppb (5) N/A -1.0 μg/m3 (0) 37.0
 
Feb. 20, 2021, 7 p.m. 1.9 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) 0.42 ppb (5) N/A 1.0 μg/m3 (5) 35.0
 
Feb. 20, 2021, 6 p.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.41 ppb (5) N/A 3.0 μg/m3 (13) 36.0
 
Feb. 20, 2021, 5 p.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.4 ppb (5) N/A 4.0 μg/m3 (17) 34.0
 
Feb. 20, 2021, 4 p.m. 0.6 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
Feb. 20, 2021, 3 p.m. 1.6 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.41 ppb (5) N/A 5.0 μg/m3 (21) 31.0
 
Feb. 20, 2021, 2 p.m. 0.7 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
Feb. 20, 2021, 1 p.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.39 ppb (5) N/A 3.0 μg/m3 (13) 34.0
 
Feb. 20, 2021, noon 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 36.0
 
Feb. 20, 2021, 11 a.m. 0.0 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) 0.38 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
Feb. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 20, 2021, 9 a.m. -0.1 ppb (0) -0.3 ppb (0) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) 0.38 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
Feb. 20, 2021, 8 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.38 ppb (5) N/A 4.0 μg/m3 (17) 32.0
 
Feb. 20, 2021, 7 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.39 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
Feb. 20, 2021, 6 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.43 ppb (5) N/A 6.0 μg/m3 (25) 31.0
 
Feb. 20, 2021, 5 a.m. 0.3 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.38 ppb (5) N/A 7.0 μg/m3 (30) 32.0
 
Feb. 20, 2021, 4 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 32.0
 
Feb. 20, 2021, 3 a.m. 0.8 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.38 ppb (5) N/A 5.0 μg/m3 (21) 34.0
 
Feb. 20, 2021, 2 a.m. 0.2 ppb (1) -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 7.0 μg/m3 (30) 33.0
 
Feb. 20, 2021, 1 a.m. 0.5 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.4 ppb (5) N/A 4.0 μg/m3 (17) 32.0
 
Feb. 20, 2021, midnight 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.42 ppb (5) N/A 3.0 μg/m3 (13) 29.0
 
Feb. 19, 2021, 11 p.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 29.0
 
Feb. 19, 2021, 10 p.m. 3.4 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.45 ppb (6) N/A 6.0 μg/m3 (25) 27.0
 
Feb. 19, 2021, 9 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.45 ppb (6) N/A 3.0 μg/m3 (13) 24.0
 
Feb. 19, 2021, 8 p.m. 3.6 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.45 ppb (6) N/A -2.0 μg/m3 (0) 23.0
 
Feb. 19, 2021, 7 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.45 ppb (6) N/A 0.0 μg/m3 (0) 22.0
 
Feb. 19, 2021, 6 p.m. 5.4 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) 0.47 ppb (6) N/A 1.0 μg/m3 (5) 20.0
 
Feb. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 19, 2021, 3 p.m. 9.5 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) 0.48 ppb (6) N/A 3.0 μg/m3 (13) 19.0
 
Feb. 19, 2021, 2 p.m. 7.1 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.47 ppb (6) N/A 3.0 μg/m3 (13) 21.0
 
Feb. 19, 2021, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.45 ppb (6) N/A 3.0 μg/m3 (13) 23.0
 
Feb. 19, 2021, noon 4.7 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.42 ppb (5) N/A 3.0 μg/m3 (13) 23.0
 
Feb. 19, 2021, 11 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 27.0
 
Feb. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 19, 2021, 9 a.m. 1.1 ppb (2) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.39 ppb (5) N/A 3.0 μg/m3 (13) 33.0
 
Feb. 19, 2021, 8 a.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.37 ppb (5) N/A 6.0 μg/m3 (25) 36.0
 
Feb. 19, 2021, 7 a.m. 4.5 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.41 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 19, 2021, 6 a.m. 6.2 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 19, 2021, 5 a.m. 4.7 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 19, 2021, 4 a.m. 6.6 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
Feb. 19, 2021, 3 a.m. 6.3 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.4 ppb (5) N/A 5.0 μg/m3 (21) 29.0