AQSQID: 800090133

Site Name: Tlahuac

Location: Mexico City (Ninguno), MX

Reporting: True, Located: True

Current AQI: 51.0

Mexico City (Ninguno) MX, MX: 19.2464, -99.01

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 29, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 3.0 ppb (4) 66.0 ppb (51) 0.2 ppb (2) 42.0 μg/m3 (38) N/A 51.0
 
March 29, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 3.0 ppb (4) 68.0 ppb (52) 0.2 ppb (2) 36.0 μg/m3 (33) N/A 52.0
 
March 29, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 4.0 ppb (6) 90.0 ppb (71) 0.4 ppb (4) 51.0 μg/m3 (46) N/A 71.0
 
March 29, 2020, 7 p.m. N/A N/A N/A 9.0 ppb (8) N/A 4.0 ppb (6) 102.0 ppb (81) 0.4 ppb (4) 51.0 μg/m3 (46) N/A 81.0
 
March 29, 2020, 6 p.m. N/A N/A N/A 12.0 ppb (11) N/A 4.0 ppb (6) 95.0 ppb (75) 0.5 ppb (6) 64.0 μg/m3 (54) N/A 75.0
 
March 29, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A 4.0 ppb (6) 73.0 ppb (57) 0.5 ppb (6) 76.0 μg/m3 (60) N/A 60.0
 
March 29, 2020, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A 5.0 ppb (7) 51.0 ppb (39) 0.4 ppb (4) 109.0 μg/m3 (77) N/A 77.0
 
March 29, 2020, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A 3.0 ppb (4) 30.0 ppb (23) 0.9 ppb (10) 101.0 μg/m3 (73) N/A 73.0
 
March 29, 2020, 2 p.m. N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 10.0 ppb (8) 1.4 ppb (16) 73.0 μg/m3 (59) N/A 59.0
 
March 29, 2020, 1 p.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 17.0 ppb (13) 0.7 ppb (8) 68.0 μg/m3 (56) N/A 56.0
 
March 29, 2020, noon N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 17.0 ppb (13) 0.8 ppb (9) 37.0 μg/m3 (34) N/A 34.0
 
March 29, 2020, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 15.0 ppb (12) 0.7 ppb (8) 37.0 μg/m3 (34) N/A 34.0
 
March 29, 2020, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.2 ppb (2) 39.0 μg/m3 (35) N/A 35.0
 
March 29, 2020, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 40.0 ppb (31) 0.3 ppb (3) 51.0 μg/m3 (46) N/A 46.0
 
March 29, 2020, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 39.0 ppb (30) 0.2 ppb (2) 65.0 μg/m3 (55) N/A 55.0
 
March 29, 2020, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 37.0 ppb (28) 0.3 ppb (3) 104.0 μg/m3 (74) N/A 74.0
 
March 29, 2020, 6 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 32.0 ppb (25) 0.5 ppb (6) 100.0 μg/m3 (72) N/A 72.0
 
March 29, 2020, 5 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 33.0 ppb (25) 0.7 ppb (8) 61.0 μg/m3 (53) N/A 53.0
 
March 29, 2020, 4 a.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 38.0 ppb (29) 0.6 ppb (7) 60.0 μg/m3 (52) N/A 52.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 60.0 μg/m3 (52) N/A 52.0
 
March 29, 2020, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 3.0 ppb (4) 53.0 ppb (41) 0.7 ppb (8) N/A N/A 41.0
 
March 29, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 65.0 ppb (50) 0.4 ppb (4) 31.0 μg/m3 (28) N/A 50.0
 
March 29, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 65.0 ppb (50) 0.4 ppb (4) 109.0 μg/m3 (77) N/A 77.0
 
March 28, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 61.0 ppb (47) 0.3 ppb (3) 113.0 μg/m3 (79) N/A 79.0
 
March 28, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 57.0 ppb (44) 0.3 ppb (3) 53.0 μg/m3 (48) N/A 48.0
 
March 28, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 58.0 ppb (45) 0.3 ppb (3) N/A N/A 45.0
 
March 28, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 55.0 ppb (42) 0.2 ppb (2) 64.0 μg/m3 (54) N/A 54.0
 
March 28, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 71.0 ppb (55) 0.3 ppb (3) 27.0 μg/m3 (25) N/A 55.0
 
March 28, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 68.0 ppb (52) 0.3 ppb (3) 48.0 μg/m3 (44) N/A 52.0
 
March 28, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 3.0 ppb (4) 66.0 ppb (51) 0.4 ppb (4) 84.0 μg/m3 (64) N/A 64.0
 
March 28, 2020, 4 p.m. N/A N/A N/A 14.0 ppb (13) N/A 2.0 ppb (3) 54.0 ppb (42) 1.0 ppb (11) 129.0 μg/m3 (87) N/A 87.0
 
March 28, 2020, 3 p.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 21.0 ppb (16) 1.5 ppb (17) 99.0 μg/m3 (72) N/A 72.0
 
March 28, 2020, 2 p.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (1) 7.0 ppb (5) 1.4 ppb (16) 99.0 μg/m3 (72) N/A 72.0
 
March 28, 2020, 1 p.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 5.0 ppb (4) 1.4 ppb (16) 74.0 μg/m3 (60) N/A 60.0
 
March 28, 2020, noon N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 4.0 ppb (3) 1.1 ppb (12) 41.0 μg/m3 (37) N/A 37.0
 
March 28, 2020, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 5.0 ppb (4) 1.1 ppb (12) N/A N/A 15.0
 
March 28, 2020, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 7.0 ppb (5) 0.7 ppb (8) 115.0 μg/m3 (80) N/A 80.0
 
March 28, 2020, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 13.0 ppb (10) 0.5 ppb (6) 112.0 μg/m3 (78) N/A 78.0
 
March 28, 2020, 8 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 10.0 ppb (8) 0.7 ppb (8) 91.0 μg/m3 (68) N/A 68.0
 
March 28, 2020, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 9.0 ppb (7) 0.9 ppb (10) 80.0 μg/m3 (62) N/A 62.0
 
March 28, 2020, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 17.0 ppb (13) 0.7 ppb (8) 102.0 μg/m3 (74) N/A 74.0
 
March 28, 2020, 5 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 16.0 ppb (12) 0.9 ppb (10) 94.0 μg/m3 (70) N/A 70.0
 
March 28, 2020, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 26.0 ppb (20) 0.9 ppb (10) 70.0 μg/m3 (58) N/A 58.0
 
March 28, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 40.0 ppb (31) 1.2 ppb (13) 58.0 μg/m3 (52) N/A 52.0
 
March 28, 2020, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 42.0 ppb (32) 0.8 ppb (9) 80.0 μg/m3 (62) N/A 62.0
 
March 28, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 52.0 ppb (40) 0.7 ppb (8) 116.0 μg/m3 (80) N/A 80.0
 
March 28, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 54.0 ppb (42) 0.7 ppb (8) 125.0 μg/m3 (85) N/A 85.0
 
March 27, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 48.0 ppb (37) 0.5 ppb (6) N/A N/A 37.0
 
March 27, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 42.0 ppb (32) 0.5 ppb (6) 205.0 μg/m3 (125) N/A 125.0
 
March 27, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) 0.3 ppb (3) N/A N/A 25.0
 
March 27, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 29.0 ppb (22) 0.2 ppb (2) N/A N/A 22.0
 
March 27, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 26.0 ppb (20) 0.2 ppb (2) N/A N/A 20.0
 
March 27, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 46.0 ppb (35) 0.2 ppb (2) 32.0 μg/m3 (29) N/A 35.0
 
March 27, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) 0.3 ppb (3) 68.0 μg/m3 (56) N/A 56.0
 
March 27, 2020, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 42.0 ppb (32) 0.4 ppb (4) 71.0 μg/m3 (58) N/A 58.0
 
March 27, 2020, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 26.0 ppb (20) 0.6 ppb (7) 68.0 μg/m3 (56) N/A 56.0
 
March 27, 2020, 2 p.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (1) 15.0 ppb (12) 0.5 ppb (6) 65.0 μg/m3 (55) N/A 55.0
 
March 27, 2020, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 18.0 ppb (14) 0.4 ppb (4) 46.0 μg/m3 (42) N/A 42.0
 
March 27, 2020, noon N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 13.0 ppb (10) 0.5 ppb (6) 30.0 μg/m3 (27) N/A 27.0
 
March 27, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 21.0 ppb (16) 0.2 ppb (2) 26.0 μg/m3 (24) N/A 24.0
 
March 27, 2020, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 26.0 ppb (20) 0.2 ppb (2) 36.0 μg/m3 (33) N/A 33.0
 
March 27, 2020, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.4 ppb (4) 40.0 μg/m3 (36) N/A 36.0
 
March 27, 2020, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 24.0 ppb (18) 0.4 ppb (4) 28.0 μg/m3 (25) N/A 25.0
 
March 27, 2020, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 29.0 ppb (22) 0.4 ppb (4) 0.0 μg/m3 (0) N/A 22.0
 
March 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 11.0 μg/m3 (10) N/A 10.0
 
March 27, 2020, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 44.0 ppb (34) 0.3 ppb (3) 58.0 μg/m3 (52) N/A 52.0
 
March 27, 2020, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 47.0 ppb (36) 0.3 ppb (3) 47.0 μg/m3 (43) N/A 43.0
 
March 27, 2020, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 46.0 ppb (35) 0.4 ppb (4) 63.0 μg/m3 (54) N/A 54.0
 
March 27, 2020, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 53.0 ppb (41) 0.7 ppb (8) 72.0 μg/m3 (58) N/A 58.0
 
March 27, 2020, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 64.0 ppb (49) 0.5 ppb (6) 86.0 μg/m3 (66) N/A 66.0
 
March 27, 2020, midnight N/A N/A N/A 6.0 ppb (6) N/A 4.0 ppb (6) 62.0 ppb (48) 0.3 ppb (3) 55.0 μg/m3 (50) N/A 50.0
 
March 26, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 7.0 ppb (10) 59.0 ppb (45) 0.3 ppb (3) 58.0 μg/m3 (52) N/A 52.0
 
March 26, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 8.0 ppb (11) 54.0 ppb (42) 0.2 ppb (2) 71.0 μg/m3 (58) N/A 58.0
 
March 26, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 5.0 ppb (7) 50.0 ppb (38) 0.2 ppb (2) 43.0 μg/m3 (39) N/A 39.0
 
March 26, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 3.0 ppb (4) 65.0 ppb (50) 0.2 ppb (2) 12.0 μg/m3 (11) N/A 50.0
 
March 26, 2020, 7 p.m. N/A N/A N/A 13.0 ppb (12) N/A 3.0 ppb (4) 78.0 ppb (61) 0.4 ppb (4) 91.0 μg/m3 (68) N/A 68.0
 
March 26, 2020, 6 p.m. N/A N/A N/A 24.0 ppb (22) N/A 5.0 ppb (7) 95.0 ppb (75) 0.7 ppb (8) 57.0 μg/m3 (51) N/A 75.0
 
March 26, 2020, 5 p.m. N/A N/A N/A 18.0 ppb (17) N/A 5.0 ppb (7) 69.0 ppb (53) 0.5 ppb (6) 94.0 μg/m3 (70) N/A 70.0
 
March 26, 2020, 4 p.m. N/A N/A N/A 24.0 ppb (22) N/A 4.0 ppb (6) 42.0 ppb (32) 0.8 ppb (9) 104.0 μg/m3 (74) N/A 74.0
 
March 26, 2020, 3 p.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 19.0 ppb (15) 1.0 ppb (11) 90.0 μg/m3 (68) N/A 68.0
 
March 26, 2020, 2 p.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 7.0 ppb (5) 1.1 ppb (12) 56.0 μg/m3 (50) N/A 50.0
 
March 26, 2020, 1 p.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 7.0 ppb (5) 0.7 ppb (8) 56.0 μg/m3 (50) N/A 50.0
 
March 26, 2020, noon N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 8.0 ppb (6) 0.6 ppb (7) 50.0 μg/m3 (45) N/A 45.0
 
March 26, 2020, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 18.0 ppb (14) 0.4 ppb (4) 37.0 μg/m3 (34) N/A 34.0
 
March 26, 2020, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 21.0 ppb (16) 0.4 ppb (4) 55.0 μg/m3 (50) N/A 50.0
 
March 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) 65.0 μg/m3 (55) N/A 55.0
 
March 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) 83.0 μg/m3 (64) N/A 64.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 μg/m3 (45) N/A 45.0
 
March 26, 2020, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 38.0 ppb (29) 0.5 ppb (6) 70.0 μg/m3 (58) N/A 58.0
 
March 26, 2020, 5 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 37.0 ppb (28) 0.7 ppb (8) 92.0 μg/m3 (68) N/A 68.0
 
March 26, 2020, 4 a.m. N/A N/A N/A 28.0 ppb (26) N/A 1.0 ppb (1) 35.0 ppb (27) 0.8 ppb (9) 91.0 μg/m3 (68) N/A 68.0
 
March 26, 2020, 3 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 50.0 ppb (38) 0.7 ppb (8) 54.0 μg/m3 (49) N/A 49.0
 
March 26, 2020, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 64.0 ppb (49) 0.4 ppb (4) 106.0 μg/m3 (76) N/A 76.0
 
March 26, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 69.0 ppb (53) 0.4 ppb (4) 93.0 μg/m3 (69) N/A 69.0
 
March 26, 2020, midnight N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 70.0 ppb (54) 0.3 ppb (3) 60.0 μg/m3 (52) N/A 54.0
 
March 25, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 68.0 ppb (52) 0.2 ppb (2) 64.0 μg/m3 (54) N/A 54.0
 
March 25, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 75.0 ppb (58) 0.3 ppb (3) 61.0 μg/m3 (53) N/A 58.0
 
March 25, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 84.0 ppb (66) 0.2 ppb (2) 68.0 μg/m3 (56) N/A 66.0
 
March 25, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 91.0 ppb (72) 0.2 ppb (2) 68.0 μg/m3 (56) N/A 72.0
 
March 25, 2020, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 96.0 ppb (76) 0.4 ppb (4) 54.0 μg/m3 (49) N/A 76.0
 
March 25, 2020, 6 p.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 78.0 ppb (61) 0.4 ppb (4) 14.0 μg/m3 (13) N/A 61.0
 
March 25, 2020, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 59.0 ppb (45) 0.3 ppb (3) 55.0 μg/m3 (50) N/A 50.0
 
March 25, 2020, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A 2.0 ppb (3) 39.0 ppb (30) 0.6 ppb (7) 127.0 μg/m3 (86) N/A 86.0
 
March 25, 2020, 3 p.m. N/A N/A N/A 30.0 ppb (28) N/A 2.0 ppb (3) 15.0 ppb (12) 1.3 ppb (14) 83.0 μg/m3 (64) N/A 64.0
 
March 25, 2020, 2 p.m. N/A N/A N/A 26.0 ppb (24) N/A 1.0 ppb (1) 6.0 ppb (5) 1.0 ppb (11) 56.0 μg/m3 (50) N/A 50.0
 
March 25, 2020, 1 p.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 3.0 ppb (2) 0.7 ppb (8) 48.0 μg/m3 (44) N/A 44.0
 
March 25, 2020, noon N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 13.0 ppb (10) 0.4 ppb (4) 15.0 μg/m3 (14) N/A 16.0
 
March 25, 2020, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 18.0 ppb (14) 0.3 ppb (3) 31.0 μg/m3 (28) N/A 28.0
 
March 25, 2020, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 22.0 ppb (17) 0.3 ppb (3) N/A N/A 17.0
 
March 25, 2020, 9 a.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 23.0 ppb (18) 0.3 ppb (3) 49.0 μg/m3 (45) N/A 45.0
 
March 25, 2020, 8 a.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 15.0 ppb (12) 0.5 ppb (6) 46.0 μg/m3 (42) N/A 42.0
 
March 25, 2020, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 17.0 ppb (13) 0.4 ppb (4) 9.0 μg/m3 (8) N/A 20.0
 
March 25, 2020, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 26.0 ppb (20) 0.4 ppb (4) N/A N/A 20.0
 
March 25, 2020, 5 a.m. N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 24.0 ppb (18) 0.6 ppb (7) 58.0 μg/m3 (52) N/A 52.0
 
March 25, 2020, 4 a.m. N/A N/A N/A 27.0 ppb (25) N/A 1.0 ppb (1) 37.0 ppb (28) 0.9 ppb (10) 106.0 μg/m3 (76) N/A 76.0
 
March 25, 2020, 3 a.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (1) 52.0 ppb (40) 0.7 ppb (8) 107.0 μg/m3 (76) N/A 76.0
 
March 25, 2020, 2 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 58.0 ppb (45) 0.6 ppb (7) 231.0 μg/m3 (138) N/A 138.0
 
March 25, 2020, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 3.0 ppb (4) 68.0 ppb (52) 0.4 ppb (4) 35.0 μg/m3 (32) N/A 52.0
 
March 25, 2020, midnight N/A N/A N/A 9.0 ppb (8) N/A 5.0 ppb (7) 89.0 ppb (70) 0.4 ppb (4) 36.0 μg/m3 (33) N/A 70.0
 
March 24, 2020, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A 5.0 ppb (7) 99.0 ppb (78) 0.4 ppb (4) 34.0 μg/m3 (31) N/A 78.0
 
March 24, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A 3.0 ppb (4) 113.0 ppb (90) 0.4 ppb (4) 45.0 μg/m3 (41) N/A 90.0
 
March 24, 2020, 9 p.m. N/A N/A N/A 15.0 ppb (14) N/A 3.0 ppb (4) 121.0 ppb (97) 0.4 ppb (4) 26.0 μg/m3 (24) N/A 97.0
 
March 24, 2020, 8 p.m. N/A N/A N/A 14.0 ppb (13) N/A 2.0 ppb (3) 95.0 ppb (75) 0.5 ppb (6) 22.0 μg/m3 (20) N/A 75.0
 
March 24, 2020, 7 p.m. N/A N/A N/A 14.0 ppb (13) N/A 2.0 ppb (3) 78.0 ppb (61) 0.5 ppb (6) N/A N/A 61.0
 
March 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) N/A 12.0
 
March 24, 2020, 5 p.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 59.0 ppb (45) 0.7 ppb (8) 76.0 μg/m3 (60) N/A 60.0
 
March 24, 2020, 4 p.m. N/A N/A N/A 25.0 ppb (23) N/A 2.0 ppb (3) 44.0 ppb (34) 0.7 ppb (8) 84.0 μg/m3 (64) N/A 64.0
 
March 24, 2020, 3 p.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 24.0 ppb (18) 0.7 ppb (8) 113.0 μg/m3 (79) N/A 79.0
 
March 24, 2020, 2 p.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 8.0 ppb (6) 1.1 ppb (12) 49.0 μg/m3 (45) N/A 45.0
 
March 24, 2020, 1 p.m. N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 8.0 ppb (6) 0.8 ppb (9) 42.0 μg/m3 (38) N/A 38.0
 
March 24, 2020, noon N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 11.0 ppb (8) 0.6 ppb (7) 39.0 μg/m3 (35) N/A 35.0
 
March 24, 2020, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 14.0 ppb (11) 0.5 ppb (6) 33.0 μg/m3 (30) N/A 30.0
 
March 24, 2020, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 24.0 ppb (18) 0.4 ppb (4) 68.0 μg/m3 (56) N/A 56.0
 
March 24, 2020, 9 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 22.0 ppb (17) 0.6 ppb (7) 68.0 μg/m3 (56) N/A 56.0
 
March 24, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 28.0 ppb (22) 0.6 ppb (7) 57.0 μg/m3 (51) N/A 51.0
 
March 24, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 34.0 ppb (26) 0.5 ppb (6) 103.0 μg/m3 (74) N/A 74.0
 
March 24, 2020, 6 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 20.0 ppb (15) 0.8 ppb (9) 85.0 μg/m3 (65) N/A 65.0
 
March 24, 2020, 5 a.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 26.0 ppb (20) 0.8 ppb (9) 120.0 μg/m3 (82) N/A 82.0
 
March 24, 2020, 4 a.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 20.0 ppb (15) 1.1 ppb (12) 85.0 μg/m3 (65) N/A 65.0
 
March 24, 2020, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 46.0 ppb (35) 0.6 ppb (7) 58.0 μg/m3 (52) N/A 52.0
 
March 24, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 71.0 ppb (55) 0.3 ppb (3) N/A N/A 55.0
 
March 24, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 71.0 ppb (55) 0.4 ppb (4) N/A N/A 55.0
 
March 24, 2020, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
March 23, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 103.0 ppb (82) 0.3 ppb (3) 54.0 μg/m3 (49) N/A 82.0
 
March 23, 2020, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 97.0 ppb (77) 0.3 ppb (3) 31.0 μg/m3 (28) N/A 77.0
 
March 23, 2020, 9 p.m. N/A N/A N/A 13.0 ppb (12) N/A 2.0 ppb (3) 98.0 ppb (78) 0.3 ppb (3) 32.0 μg/m3 (29) N/A 78.0
 
March 23, 2020, 8 p.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 82.0 ppb (64) 0.4 ppb (4) N/A N/A 64.0
 
March 23, 2020, 7 p.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 74.0 ppb (57) 0.3 ppb (3) 12.0 μg/m3 (11) N/A 57.0
 
March 23, 2020, 6 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 62.0 ppb (48) 0.2 ppb (2) 13.0 μg/m3 (12) N/A 48.0
 
March 23, 2020, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 49.0 ppb (38) 0.3 ppb (3) 53.0 μg/m3 (48) N/A 48.0
 
March 23, 2020, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 34.0 ppb (26) 0.5 ppb (6) 54.0 μg/m3 (49) N/A 49.0
 
March 23, 2020, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 22.0 ppb (17) 0.5 ppb (6) 92.0 μg/m3 (68) N/A 68.0
 
March 23, 2020, 2 p.m. N/A N/A N/A 25.0 ppb (23) N/A 2.0 ppb (3) 5.0 ppb (4) 1.1 ppb (12) 63.0 μg/m3 (54) N/A 54.0
 
March 23, 2020, 1 p.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (1) 7.0 ppb (5) 0.7 ppb (8) 41.0 μg/m3 (37) N/A 37.0
 
March 23, 2020, noon N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 11.0 ppb (8) 0.3 ppb (3) 44.0 μg/m3 (40) N/A 40.0
 
March 23, 2020, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 7.0 ppb (5) 0.4 ppb (4) 40.0 μg/m3 (36) N/A 36.0
 
March 23, 2020, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 8.0 ppb (6) 0.3 ppb (3) 40.0 μg/m3 (36) N/A 36.0
 
March 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (36) N/A 36.0
 
March 23, 2020, 8 a.m. N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 6.0 ppb (5) 0.5 ppb (6) 42.0 μg/m3 (38) N/A 38.0
 
March 23, 2020, 7 a.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 13.0 ppb (10) 0.3 ppb (3) 18.0 μg/m3 (16) N/A 19.0
 
March 23, 2020, 6 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) 12.0 ppb (9) 0.4 ppb (4) 6.0 μg/m3 (5) N/A 21.0
 
March 23, 2020, 5 a.m. N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 14.0 ppb (11) 0.4 ppb (4) 58.0 μg/m3 (52) N/A 52.0
 
March 23, 2020, 4 a.m. N/A N/A N/A 29.0 ppb (27) N/A 1.0 ppb (1) 28.0 ppb (22) 0.7 ppb (8) 54.0 μg/m3 (49) N/A 49.0
 
March 23, 2020, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 49.0 ppb (38) 0.4 ppb (4) 53.0 μg/m3 (48) N/A 48.0
 
March 23, 2020, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 51.0 ppb (39) 0.5 ppb (6) 91.0 μg/m3 (68) N/A 68.0
 
March 23, 2020, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 63.0 ppb (48) 0.3 ppb (3) 101.0 μg/m3 (73) N/A 73.0
 
March 23, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 78.0 ppb (61) 0.2 ppb (2) 50.0 μg/m3 (45) N/A 61.0
 
March 22, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 3.0 ppb (4) 82.0 ppb (64) 0.3 ppb (3) 38.0 μg/m3 (35) N/A 64.0