AQSQID: 060550004

Site Name: Napa - Napa Valley College

Location: Napa (Soscol Gateway S), CA

Reporting: True, Located: True

Current AQI: 29.0

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
March 29, 2020, 3 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
March 29, 2020, 2 a.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 29.0
 
March 29, 2020, 1 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 31.0
 
March 29, 2020, midnight 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 34.0
 
March 28, 2020, 11 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 35.0
 
March 28, 2020, 10 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.16 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 9 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 37.0
 
March 28, 2020, 8 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (38) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 38.0
 
March 28, 2020, 7 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 6 p.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.18 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 5 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.21 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 4 p.m. 4.3 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.23 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 3 p.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 2 p.m. 7.7 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 1 p.m. 7.1 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, noon 6.1 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 11 a.m. 5.1 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 9 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.28 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 8 a.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 7 a.m. 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.22 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 6 a.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 5 a.m. 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 4 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.18 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 3 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) 0.17 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 2 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) 0.17 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 1 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 49.0 ppb (38) 0.16 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, midnight 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 11 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 48.0 ppb (37) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 37.0
 
March 27, 2020, 10 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 36.0
 
March 27, 2020, 9 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) 0.12 ppb (1) N/A 8.0 μg/m3 (33) 36.0
 
March 27, 2020, 8 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 35.0
 
March 27, 2020, 7 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 31.0
 
March 27, 2020, 6 p.m. 2.2 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 27.0
 
March 27, 2020, 5 p.m. 6.5 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 4 p.m. 11.1 ppb (10) 4.7 ppb (4) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
March 27, 2020, 3 p.m. 33.0 ppb (31) 22.0 ppb (20) N/A 11.0 ppb (10) N/A N/A 6.0 ppb (5) 0.68 ppb (8) N/A 4.0 μg/m3 (17) 31.0
 
March 27, 2020, 2 p.m. 61.0 ppb (57) 47.9 ppb (44) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 1.18 ppb (13) N/A 5.0 μg/m3 (21) 57.0
 
March 27, 2020, 1 p.m. 49.3 ppb (46) 36.6 ppb (34) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 1.48 ppb (16) N/A 5.0 μg/m3 (21) 46.0
 
March 27, 2020, noon 47.0 ppb (44) 33.1 ppb (31) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 1.21 ppb (13) N/A 4.0 μg/m3 (17) 44.0
 
March 27, 2020, 11 a.m. 30.3 ppb (28) 17.3 ppb (16) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 1.06 ppb (12) N/A 3.0 μg/m3 (12) 28.0
 
March 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
March 27, 2020, 9 a.m. 9.0 ppb (8) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 7.0 ppb (5) 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 8 a.m. 6.9 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) 0.5 ppb (6) N/A 18.0 μg/m3 (63) 63.0
 
March 27, 2020, 7 a.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.36 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
March 27, 2020, 6 a.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.31 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
March 27, 2020, 5 a.m. 9.1 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 14.0 ppb (11) 0.26 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
March 27, 2020, 4 a.m. 8.1 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.23 ppb (3) N/A 1.0 μg/m3 (4) 16.0
 
March 27, 2020, 3 a.m. 4.1 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
March 27, 2020, 2 a.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
March 27, 2020, 1 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 28.0
 
March 27, 2020, midnight 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.08 ppb (1) N/A -2.0 μg/m3 (0) 29.0
 
March 26, 2020, 11 p.m. 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.07 ppb (1) N/A -1.0 μg/m3 (0) 30.0
 
March 26, 2020, 10 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.07 ppb (1) N/A 2.0 μg/m3 (8) 30.0
 
March 26, 2020, 9 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.07 ppb (1) N/A 1.0 μg/m3 (4) 29.0
 
March 26, 2020, 8 p.m. 1.4 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.09 ppb (1) N/A 1.0 μg/m3 (4) 29.0
 
March 26, 2020, 7 p.m. 2.5 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 27.0
 
March 26, 2020, 6 p.m. 6.9 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
March 26, 2020, 5 p.m. 10.7 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.35 ppb (4) N/A 3.0 μg/m3 (12) 17.0
 
March 26, 2020, 4 p.m. 25.4 ppb (24) 14.9 ppb (14) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) 0.67 ppb (7) N/A 1.0 μg/m3 (4) 24.0
 
March 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 26, 2020, 2 p.m. 46.3 ppb (43) 33.8 ppb (31) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 1.39 ppb (15) N/A 0.0 μg/m3 (0) 43.0
 
March 26, 2020, 1 p.m. 34.5 ppb (32) 22.3 ppb (21) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) 1.04 ppb (12) N/A 2.0 μg/m3 (8) 32.0
 
March 26, 2020, noon 18.0 ppb (17) 7.2 ppb (7) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) 0.73 ppb (8) N/A 3.0 μg/m3 (12) 17.0
 
March 26, 2020, 11 a.m. 9.6 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A 6.0 ppb (5) 0.59 ppb (7) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) N/A
March 26, 2020, 9 a.m. 5.8 ppb (5) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) 0.58 ppb (6) N/A -3.0 μg/m3 (0) 8.0
 
March 26, 2020, 8 a.m. 4.3 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.56 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 7 a.m. 4.1 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.55 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
March 26, 2020, 6 a.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 5 a.m. 3.7 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A 4.0 μg/m3 (17) 18.0
 
March 26, 2020, 4 a.m. 3.9 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.37 ppb (4) N/A 3.0 μg/m3 (12) 25.0
 
March 26, 2020, 3 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) 0.3 ppb (3) N/A 2.0 μg/m3 (8) 31.0
 
March 26, 2020, 2 a.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.28 ppb (3) N/A 3.0 μg/m3 (12) 31.0
 
March 26, 2020, 1 a.m. 1.1 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.26 ppb (3) N/A 3.0 μg/m3 (12) 32.0
 
March 26, 2020, midnight 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) 0.25 ppb (3) N/A 1.0 μg/m3 (4) 32.0
 
March 25, 2020, 11 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) 0.25 ppb (3) N/A 1.0 μg/m3 (4) 33.0
 
March 25, 2020, 10 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) 0.25 ppb (3) N/A 2.0 μg/m3 (8) 33.0
 
March 25, 2020, 9 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) 0.26 ppb (3) N/A 1.0 μg/m3 (4) 33.0
 
March 25, 2020, 8 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.26 ppb (3) N/A 0.0 μg/m3 (0) 33.0
 
March 25, 2020, 7 p.m. 1.0 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.28 ppb (3) N/A 2.0 μg/m3 (8) 32.0
 
March 25, 2020, 6 p.m. 2.6 ppb (2) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.34 ppb (4) N/A 3.0 μg/m3 (12) 28.0
 
March 25, 2020, 5 p.m. 8.2 ppb (8) 3.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.47 ppb (5) N/A 1.0 μg/m3 (4) 19.0
 
March 25, 2020, 4 p.m. 12.7 ppb (12) 6.5 ppb (6) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.54 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 3 p.m. 32.7 ppb (30) 21.7 ppb (20) N/A 11.0 ppb (10) N/A N/A 5.0 ppb (4) 0.86 ppb (10) N/A 7.0 μg/m3 (29) 30.0
 
March 25, 2020, 2 p.m. 35.7 ppb (33) 25.0 ppb (23) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) 0.92 ppb (10) N/A 5.0 μg/m3 (21) 33.0
 
March 25, 2020, 1 p.m. 39.9 ppb (37) 28.6 ppb (26) N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) 0.86 ppb (10) N/A 3.0 μg/m3 (12) 37.0
 
March 25, 2020, noon 26.5 ppb (25) 15.9 ppb (15) N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) 0.59 ppb (7) N/A 2.0 μg/m3 (8) 25.0
 
March 25, 2020, 11 a.m. 12.7 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) 0.47 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 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 (29) 29.0
 
March 25, 2020, 9 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.45 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
March 25, 2020, 8 a.m. 6.7 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) 0.43 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
March 25, 2020, 7 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 18.0
 
March 25, 2020, 6 a.m. 4.7 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.44 ppb (5) N/A 1.0 μg/m3 (4) 18.0
 
March 25, 2020, 5 a.m. 4.2 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 23.0
 
March 25, 2020, 4 a.m. 1.2 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.32 ppb (4) N/A 5.0 μg/m3 (21) 29.0
 
March 25, 2020, 3 a.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.29 ppb (3) N/A 4.0 μg/m3 (17) 30.0
 
March 25, 2020, 2 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) 0.28 ppb (3) N/A 1.0 μg/m3 (4) 31.0
 
March 25, 2020, 1 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) 0.27 ppb (3) N/A 2.0 μg/m3 (8) 31.0
 
March 25, 2020, midnight 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) 0.27 ppb (3) N/A 2.0 μg/m3 (8) 32.0
 
March 24, 2020, 11 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (32) 0.28 ppb (3) N/A -2.0 μg/m3 (0) 32.0
 
March 24, 2020, 10 p.m. 1.0 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) 0.3 ppb (3) N/A N/A 33.0
 
March 24, 2020, 9 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.33 ppb (4) N/A N/A 34.0
 
March 24, 2020, 8 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (33) 0.35 ppb (4) N/A N/A 33.0
 
March 24, 2020, 7 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 32.0
 
March 24, 2020, 6 p.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.34 ppb (4) N/A 0.0 μg/m3 (0) 28.0
 
March 24, 2020, 5 p.m. 7.3 ppb (7) 1.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 27.0
 
March 24, 2020, 4 p.m. 8.0 ppb (7) 1.4 ppb (1) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.36 ppb (4) N/A 3.0 μg/m3 (12) 23.0
 
March 24, 2020, 3 p.m. 9.3 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.4 ppb (4) N/A 2.0 μg/m3 (8) 19.0
 
March 24, 2020, 2 p.m. 14.2 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) 0.46 ppb (5) N/A 2.0 μg/m3 (8) 13.0
 
March 24, 2020, 1 p.m. 15.0 ppb (14) 2.9 ppb (3) N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) 0.47 ppb (5) N/A 2.0 μg/m3 (8) 14.0
 
March 24, 2020, noon 7.8 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) 0.4 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 11 a.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.36 ppb (4) N/A 3.0 μg/m3 (12) 14.0
 
March 24, 2020, 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 (8) 8.0
 
March 24, 2020, 9 a.m. 4.2 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 8 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 7 a.m. 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.37 ppb (4) N/A 0.0 μg/m3 (0) 20.0
 
March 24, 2020, 6 a.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 25.0
 
March 24, 2020, 5 a.m. 0.8 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) 0.29 ppb (3) N/A 3.0 μg/m3 (12) 27.0
 
March 24, 2020, 4 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (28) 0.28 ppb (3) N/A 1.0 μg/m3 (4) 28.0
 
March 24, 2020, 3 a.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (31) 0.27 ppb (3) N/A 0.0 μg/m3 (0) 31.0
 
March 24, 2020, 2 a.m. 0.5 ppb (0) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (34) 0.26 ppb (3) N/A 0.0 μg/m3 (0) 34.0
 
March 24, 2020, 1 a.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) 0.26 ppb (3) N/A 1.0 μg/m3 (4) 35.0
 
March 24, 2020, midnight 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) 0.26 ppb (3) N/A 2.0 μg/m3 (8) 35.0
 
March 23, 2020, 11 p.m. 0.6 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) 0.24 ppb (3) N/A 1.0 μg/m3 (4) 35.0
 
March 23, 2020, 10 p.m. 0.7 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (35) 0.24 ppb (3) N/A -1.0 μg/m3 (0) 35.0
 
March 23, 2020, 9 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) 0.25 ppb (3) N/A 2.0 μg/m3 (8) 35.0
 
March 23, 2020, 8 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (35) 0.27 ppb (3) N/A 4.0 μg/m3 (17) 35.0
 
March 23, 2020, 7 p.m. 0.9 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.27 ppb (3) N/A 0.0 μg/m3 (0) 34.0
 
March 23, 2020, 6 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (32) 0.28 ppb (3) N/A 1.0 μg/m3 (4) 32.0
 
March 23, 2020, 5 p.m. 0.8 ppb (1) 0.4 ppb (0) N/A 0.0 ppb (0) N/A N/A 39.0 ppb (30) 0.31 ppb (3) N/A 2.0 μg/m3 (8) 30.0
 
March 23, 2020, 4 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) 0.33 ppb (4) N/A 3.0 μg/m3 (12) 25.0
 
March 23, 2020, 3 p.m. 20.4 ppb (19) 12.5 ppb (12) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.5 ppb (6) N/A 2.0 μg/m3 (8) 19.0
 
March 23, 2020, 2 p.m. 41.5 ppb (38) 30.6 ppb (28) N/A 11.0 ppb (10) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 1.0 μg/m3 (4) 38.0
 
March 23, 2020, 1 p.m. 21.9 ppb (20) 12.0 ppb (11) N/A 10.0 ppb (9) N/A N/A 1.0 ppb (1) 0.49 ppb (5) N/A 1.0 μg/m3 (4) 20.0
 
March 23, 2020, noon 12.2 ppb (11) 4.7 ppb (4) N/A 7.0 ppb (6) N/A N/A 4.0 ppb (3) 0.43 ppb (5) N/A -1.0 μg/m3 (0) 11.0
 
March 23, 2020, 11 a.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 9.0 ppb (7) 0.32 ppb (4) N/A -2.0 μg/m3 (0) 7.0
 
March 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) N/A
March 23, 2020, 9 a.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) 0.32 ppb (4) N/A 1.0 μg/m3 (4) 11.0
 
March 23, 2020, 8 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.35 ppb (4) N/A 2.0 μg/m3 (8) 12.0
 
March 23, 2020, 7 a.m. 3.8 ppb (4) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.32 ppb (4) N/A 1.0 μg/m3 (4) 14.0
 
March 23, 2020, 6 a.m. 4.7 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.38 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
March 23, 2020, 5 a.m. 4.7 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.33 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
March 23, 2020, 4 a.m. 4.6 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A 2.0 μg/m3 (8) 24.0
 
March 23, 2020, 3 a.m. 4.2 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 26.0
 
March 23, 2020, 2 a.m. 2.6 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.29 ppb (3) N/A 4.0 μg/m3 (17) 30.0
 
March 23, 2020, 1 a.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.25 ppb (3) N/A 2.0 μg/m3 (8) 32.0
 
March 23, 2020, midnight 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 35.0
 
March 22, 2020, 11 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) 0.19 ppb (2) N/A -2.0 μg/m3 (0) 37.0
 
March 22, 2020, 10 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 37.0
 
March 22, 2020, 9 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 35.0
 
March 22, 2020, 8 p.m. 2.4 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.24 ppb (3) N/A 1.0 μg/m3 (4) 35.0
 
March 22, 2020, 7 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.27 ppb (3) N/A 1.0 μg/m3 (4) 30.0
 
March 22, 2020, 6 p.m. 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.29 ppb (3) N/A 2.0 μg/m3 (8) 23.0
 
March 22, 2020, 5 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.31 ppb (3) N/A 1.0 μg/m3 (4) 22.0
 
March 22, 2020, 4 p.m. 3.8 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.34 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
March 22, 2020, 3 p.m. 8.1 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
March 22, 2020, 2 p.m. 13.1 ppb (12) 4.2 ppb (4) N/A 9.0 ppb (8) N/A N/A 7.0 ppb (5) 0.39 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
March 22, 2020, 1 p.m. 10.5 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.36 ppb (4) N/A 2.0 μg/m3 (8) 10.0
 
March 22, 2020, noon 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.35 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
March 22, 2020, 11 a.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.33 ppb (4) N/A -1.0 μg/m3 (0) 12.0
 
March 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
March 22, 2020, 9 a.m. 4.3 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2020, 8 a.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
March 22, 2020, 7 a.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.33 ppb (4) N/A 2.0 μg/m3 (8) 15.0
 
March 22, 2020, 6 a.m. 7.3 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.41 ppb (5) N/A 3.0 μg/m3 (12) 16.0
 
March 22, 2020, 5 a.m. 10.3 ppb (10) 1.1 ppb (1) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.42 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
March 22, 2020, 4 a.m. 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.34 ppb (4) N/A 0.0 μg/m3 (0) 25.0