AQSQID: 060990005

Site Name: Modesto - 14th Street

Location: Modesto (Downtown), CA

Reporting: True, Located: True

Current AQI: 18.0

Modesto (Downtown) CA, US: 37.642165, -120.994212

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.22 ppb (2) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 18.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.21 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 17.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.24 ppb (3) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.22 ppb (2) 16.0 μg/m3 (15) 3.0 μg/m3 (12) 15.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.18 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 20.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.2 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 19.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 17.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.21 ppb (2) 3.0 μg/m3 (3) 5.0 μg/m3 (21) 21.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.18 ppb (2) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 25.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.18 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 25.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.18 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 25.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.18 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 26.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.18 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 29.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 32.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 32.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 32.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 32.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.17 ppb (2) 24.0 μg/m3 (22) 2.0 μg/m3 (8) 32.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.17 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 30.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.17 ppb (2) 21.0 μg/m3 (19) -1.0 μg/m3 (0) 27.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.18 ppb (2) 17.0 μg/m3 (15) -1.0 μg/m3 (0) 25.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) 15.0 μg/m3 (14) -1.0 μg/m3 (0) 22.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.19 ppb (2) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 19.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.19 ppb (2) 15.0 μg/m3 (14) 1.0 μg/m3 (4) 17.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) 11.0 μg/m3 (10) 0.0 μg/m3 (0) 12.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.18 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 13.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 2.0 μg/m3 (8) 9.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.16 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 18.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 20.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.18 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 22.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.19 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.19 ppb (2) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 22.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.18 ppb (2) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 23.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.18 ppb (2) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 24.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.18 ppb (2) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.18 ppb (2) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 28.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.16 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 35.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.17 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 36.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.16 ppb (2) 20.0 μg/m3 (18) 1.0 μg/m3 (4) 36.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 19.0 μg/m3 (17) 0.0 μg/m3 (0) 35.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.15 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 35.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.15 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 34.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 32.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.16 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 30.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.16 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 28.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.16 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 27.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.17 ppb (2) 19.0 μg/m3 (17) 3.0 μg/m3 (12) 25.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.18 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 22.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.16 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 17.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.15 ppb (2) 7.0 μg/m3 (6) -1.0 μg/m3 (0) 12.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.15 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 13.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.14 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 15.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.15 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 15.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.15 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.16 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 18.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.15 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 20.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.15 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 19.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.16 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 21.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.15 ppb (2) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 23.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.14 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 25.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.15 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (4) 28.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.15 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (8) 31.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.15 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 31.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.15 ppb (2) 7.0 μg/m3 (6) -2.0 μg/m3 (0) 29.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.16 ppb (2) 10.0 μg/m3 (9) -1.0 μg/m3 (0) 26.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.16 ppb (2) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 25.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.15 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 21.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.17 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 18.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.17 ppb (2) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 18.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.17 ppb (2) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 17.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.19 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 12.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.2 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 9.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 5.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.15 ppb (2) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 16.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.15 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 16.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.15 ppb (2) 3.0 μg/m3 (3) 0.0 μg/m3 (0) 16.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.15 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 15.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.15 ppb (2) 1.0 μg/m3 (1) 4.0 μg/m3 (17) 18.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.16 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 19.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.15 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 21.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.15 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 25.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.16 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 27.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.16 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 31.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.15 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.16 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 32.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.16 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 31.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.15 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 31.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.16 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 30.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.17 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 30.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.19 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 26.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.18 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 24.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.18 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 21.0
 
March 30, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.25 ppb (3) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 14.0
 
March 30, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.37 ppb (4) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.48 ppb (5) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 30, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 7.0 μg/m3 (29) 29.0
 
March 30, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.2 ppb (2) 6.0 μg/m3 (5) 7.0 μg/m3 (29) 29.0
 
March 30, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.18 ppb (2) 6.0 μg/m3 (5) 6.0 μg/m3 (25) 25.0
 
March 30, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 8.0 μg/m3 (7) 8.0 μg/m3 (33) 33.0
 
March 30, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
March 30, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
March 30, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.21 ppb (2) 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
March 30, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.23 ppb (3) 10.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
March 30, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.21 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
March 30, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.21 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 27.0
 
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.18 ppb (2) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 32.0
 
March 30, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.17 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 34.0
 
March 30, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.17 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 35.0
 
March 29, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.17 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 37.0
 
March 29, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.18 ppb (2) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 36.0
 
March 29, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 35.0
 
March 29, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.18 ppb (2) 6.0 μg/m3 (5) 6.0 μg/m3 (25) 35.0
 
March 29, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.17 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 33.0
 
March 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.18 ppb (2) 9.0 μg/m3 (8) 7.0 μg/m3 (29) 30.0
 
March 29, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 12.0 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
March 29, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 13.0 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
March 29, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.22 ppb (2) 8.0 μg/m3 (7) 10.0 μg/m3 (42) 42.0
 
March 29, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.22 ppb (2) 8.0 μg/m3 (7) 13.0 μg/m3 (52) 52.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.23 ppb (3) 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 29, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.23 ppb (3) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 23.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 26.0
 
March 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.22 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 25.0
 
March 29, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.23 ppb (3) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 27.0
 
March 29, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.21 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 29.0
 
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 4.0 μg/m3 (4) 6.0 μg/m3 (25) 31.0
 
March 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 29.0
 
March 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.24 ppb (3) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 32.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.21 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 34.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.21 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 35.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 35.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 35.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.19 ppb (2) 11.0 μg/m3 (10) 8.0 μg/m3 (33) 35.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.19 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 36.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 34.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.2 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.22 ppb (2) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.24 ppb (3) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.27 ppb (3) 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.29 ppb (3) 26.0 μg/m3 (24) 18.0 μg/m3 (63) 63.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.31 ppb (3) 28.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.27 ppb (3) 23.0 μg/m3 (21) 14.0 μg/m3 (54) 54.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.23 ppb (3) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.21 ppb (2) 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.22 ppb (2) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.22 ppb (2) 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.22 ppb (2) 22.0 μg/m3 (20) 14.0 μg/m3 (54) 54.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.2 ppb (2) 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.19 ppb (2) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.19 ppb (2) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 37.0
 
March 28, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.18 ppb (2) 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.18 ppb (2) 22.0 μg/m3 (20) 5.0 μg/m3 (21) 39.0
 
March 27, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 35.0
 
March 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.16 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 32.0
 
March 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.17 ppb (2) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 31.0
 
March 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.17 ppb (2) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 29.0
 
March 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.19 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 26.0
 
March 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.19 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 23.0
 
March 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.19 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 20.0